CERATOMEGILLA ERIOPSIS- HIPPODAMIA. 17 



Subspecies fuscilabris Casey. 



The pronotum pattern has the two areas not confluent (fig. 4) and the spots not 

 greatly reduced. This characterizes all of the North American range except the south- 

 eastern States and Cuba. Casey believes that the specimens from South Texas are 

 broader, with the color-pattern the same, and has named it Megilla strenua. 



Subspecies floridana Leng. 



Specimens from Beaufort, North Carolina, to Louisiana are smaller. The pigment 

 much reduced, but the pronotum, although having the pigment reduced often to 4 spots 

 may in other cases show a transverse confluence, in this respect approaching the typical 

 species as found in Cuba. 



Subjection to both 40 C. and 18 C. in the usual way failed to produce 

 significant modification. 



Genus CERATOMEGILLA Crotch. 

 3038. Ceratomegilla ulkei Crotch. (Fig. 5.) 



Distribution: Hudson Bay. 



A monotypic genus having unique antennae and of obscure relationship. 

 Apparently none have been taken since Ulke found the type at Hudson 

 Bay. The drawing given (fig. 5) is pinned into 

 the Leconte collection in the Museum of Com- 

 parative Zoology. 



5 



Genus ERIOPSIS Mulsant. 

 3040. Eriopsis connexa Germar. 



Distribution: Texas, California, and Vancou- 

 ver Island. 



n n * i / -i , -i FIOJ. >. Elytra 1 pattern in 



A South American species rarely found in the ccratomeguin 



United States (fig. 6). It is possibly derived Fl <'j 



from a spotted Hippodamia by reversal of pat- 



tern. E. eschscholzii from Chili represents an intermediate condition com- 



parable to Hippodamia cockerelli. 



Genus HIPPODAMIA Mulsant. 



The species of Hippodamia fall into several distinct phylogenetic sections, 

 as shown in fig. 7 and table 1. The comparative size and form of some 

 of the species of this genus are shown in table 2. While these differ, the 

 ranges overlap to such an extent that size and shape are seldom service- 

 able in the identification of single specimens. The differences are large 

 enough, however, so that the eye readily detects them in the comparison 

 of series. The females are uniformly larger, but differ little in propor- 

 tions from the males. Under H. convergens similar data will be given in 

 regard to two of its varieties. 



