164 Journal New York Entomological Society. 1 VoL xxvu. 



of CoccincUa and included species which have been relegated to other 

 genera by all modern writers, yet Billberg's work was too indefinite 

 and obscure to be taken too seriously, and the writer feels that few 

 workers will object to seeing the name suppressed, instead of being 

 revived for such long-established genera as either Anisosticta or 

 Hippodamia. Billberg's use of the name, however, invalidates Spilota 

 Burmeister, 1844, a segregate of Anomala, which must sink as a 

 homonym. 



Hippodamia Chevrolat. 



Hippodamia Chevrolat, in Dejean's Cat. Coleop., ed. 1833, p. 432, 1833 (or 

 1834?). 



Type of genus : Coccinella 13-punctata Linne, designated by 

 Crotch. 8 



Our North American species may be divided into four natural 

 groups by means of the male genitalia as follows : 



13-punctata group. yEdeagus slender, bent almost double upon 

 itself, a little thickened just beyond the bend, its dorsal, subapical 

 flaps small and membranous; lateral lobes of the theca (tegmen of 

 Sharp and Muir 9 ) unusually large and wide; the posterior lobe of 

 theca abruptly bent downward at the apical third and provided with 

 a distinct chitinized plate beneath, which bears a rather long, linear 

 lobe on each side at the posterior corners, and a pair of median lobes, 

 much longer, reaching nearly to the apex of the theca and frequently 

 after drying bent abruptly outward at their middle. 



Parenthesis group. ^Edeagus slender, moderately bent in a half 

 circle or a little more, enlarged or somewhat thickened at the dorsal, 

 subapical flaps which are triangular in shape and rather well chitin- 

 ized; lateral lobes of theca slender; the posterior lobe of theca rather 

 small and narrow, its apex produced into a slender, simple or barbed 

 point. 



Convcrgcns group. yEdeagus slender, moderately curved, not 

 thickened or hardly so at the dorsal, subapical flaps, which are more 

 or less membranous and linear; lateral lobes of theca slender; the 

 posterior lobe of theca generally wider and more depressed than in 

 the preceding group, its apex merely acute or produced into a slender, 

 simple point. 



8 Revision of the Coccinellidse, p. 94, 1874. 



9 The Comparative Anatomy of the Male Genitalia Tube in Coleoptera, 

 Trans. Entom. Soc. London, 1912, pp. 477-642, pi. 42-78, Dec, 1912. 



