Continuing under this heading, the writer would offer a few remarks subservient to a fuller knowledge of the early stages of this genus, which may be considered supplementary to some former papers that have appeared. There is some discussion at present in the current literature as to whether the term Gortyna, Och., should not replace Hydrœcia, Gn., and it is to be hoped definite conclusions may be reached and the proper one fully established. The following early histories are perhaps unknown, or at any rate remain as yet unpublished.

Nectarophora lactucœ, Walk.

(Pl. III., 8.) Several writers have listed S. lactucœ, Kalt as an American species. That of Thomas is noted below. Dr. J. B. Smith gives the species in his Insects of New Jersey. Whether the species occurs in this country or not is open to question. It should be noted here that Kaltenbach's Aphis lactucœ is a Rhopalosiphum. Buckton gives both Siphonophora lactucœ, Kalt. and Rh. lactucœ, Kalt., though Kaltenbach described but one species. Walker (Ann. and Mag. Nat. Hist., Ser. 2, p. 49, 1849) in his description of the species confused it with Rh. lactucœ, Kalt., as Passerini has pointed out. Walker described it as Aphis lactucœ, Linn. and as a synonym of A. lactucœ, Kalt., though Kaltenbach had already shown A. lactucœ, Linn. to have been invalid, and that his species was entirely distinct. Walker also gives A. ribis-nigri, Mosley (Gard. Chron. I., 684) as a synonym. Mosley's description is hardly recognizable, but evidently is the same as some of the varieties described by Walker, both undoubtedly referring to Rhopalosiphum ribis, Linn., and Myzus ribis. Unfortunately, Walker describes only the coloration of his species. Part of his species is evidently, however, N. lactucœ. Passerini's description is too brief to be recognizable, but probably refers to the same species, as Buckton thought. Why Buckton described the species as S. lactucœ, Kalt., is not clear. Buckton follows Walker in giving Ribes nigrum and grossularia as food-plants, and remarks that Walker states that the cornicles are enlarged at the middle, but does not otherwise seem to confuse the species with others as did Walker.

The following bibliographical catalogue was prepared several years ago, and thinking that other workers might find it of use, it is offered for publication at this time. A table of the genera, compiled from the writings of various systematists who have dealt with this famiiy, is added to make the paper more complete.

Since the publication, in Psyche for 1892, of my study of the Orthopteran genus Hippiscus, a few additional species have come to light, and they are herewith described. The first species belongs to the subgenus Hippiscus, the others to the subgenus Xanthippus.

Hippiscus citrinus, sp. nov.—A compact and stout though rather small form. Head rather stout and full, broad above, luteo-testaceous, more or less infuscated above, dark fuscous in a stripe behind the eyes, the carinæ more or less infuscated; summit of head obscurely punctate, the vertical scutellum obscure and, with the foveolæ, much as in H. compactus; frontal costa broad, flat, punctate, depressed at the ocellus, where it is slightly enlarged, but otherwise subequal; antennæ ferruginous in basal, blackish in apical half.