1999 C. florea Guen. Two specimens from Malta in July.

2001 C. omissa Dod. One specimen from Hamilton, July 11, 1928.

2004 C. similaris Sm. Scattered specimens from all parts of the state except the southern Plains region. July-August. Rather common at Malta in 1928. It is quite probable that some of these records refer to montonae.

The following study is based on the types of LeConte and Horn and material from the American Museum, Museum of Comparative Zooslogy, Canadian National Collectioas and from the collections of Messrs. Owen Bryant, C. A. Frost, Ralph Hopping, W. Knaus, and J. B. Wallis. Dr. W. Horn supplied specimens of two European species, of Aegialia rufa Fab. and sabuleti Panz.; these were of much aid in the study of the subgenera, the descriptions of which were made as detailed as possible so that descriptions of the species could be shorter.

Female holotype: Color: head and prothorax dark brown, pterothorax dark brown with some red hypodermal pigmentation, abdomen uniformly brolwn. Antennal segments uniformly dark brown with the exception of the third which is yellowish brown. Legs concolorous with body except the tarsi and distal ends of fore tibiae which are light yellowish brown. Fore wings brown, light in basal third. Ocelli with orange red crescents. Body spines dark brown.

Andrena nubecula race tristicornis n. race. Flagellum entirely black. Lakeside, Que., Aug. 20, 1929 (J. W. Buckle). Also from Milwaukee, Wis., July 26, 1902 (Graenicher). The specimens are females. The Lakeside specimen has curiously aberrant venation.