40 Journal New York Entomological Society. [Voi. xl 



I think this species should be omitted from our list. 



This genus and the preceding are very close to Hippo da mi a. 



Hippodamia Mills. 



The synopsis by Crotch includes only part of the now known 

 species ; the later synopsis by. Casey omits several of the previously 

 described species ; I am therefore compelled to offer a new synopsis. 

 Our species fall into three groups distinguished by the character of the 

 sternal plates or more readily by the markings of the thorax, viz : 



Thorax with broad white lateral margins within each of which is a black dot. The 

 black dot is sometimes connected with the interior black portion, the latter being 

 without the discal divergent lines Group I 



Thorax with a white quadrate spot at the middle of the base and white lateral and 

 anterior margins variously interrupted Group 2 



Thorax with a white lateral margin often interrupted at middle or reduced to an an- 

 terior marginal spot. In this group occur all the species with discal divergent lines 

 on the thorax, but some species are without them (houp 3 



Group I consists of one species, ij-pnuctaia. Group 2 consists 

 of one species parenthesis. Group 3 consists of several species separ- 

 able as follows : 



Anterior half of elytra without markings or with only a humeral black dot...glacialis 

 Elytra with a black subbasal band often reaciiing the humeri, with or without other 



marks 5=signata 



Elytra with a common black scutellar spot in the form of a trilobed star, with or 



without other marks Lecontei 



Elytra black with a subapical red spot moesta 



Elytra immaculate ambigua 



Elytra with six small spots, seldom even partly confluent COnvergenS 



Elytra with sutural margin wholly or partly black and each with four spots distinct or 



united or with a sinuous vitta formed by the union of the spots sinuata 



Elytra with a broad subbasal band and a large medial spot dispar 



3041. H. 5==signata Kirby, 1837. 



Extends from New York ( Adirondacks) to California, following a 

 northern range but descending also to Colorado, Utah and New 

 Mexico in the mountains. 



In the most heavily marked form the thorax is all black except the 

 anterior angles, and the elytra have three black bands, one subbasal, 

 very broad, disconnected at suture ; one post-mediaii also broad but 

 abbreviated, the third subapical and scarcely more than a good-sized 

 spot. In the palest form the thorax has a white margin and discal 

 lines, the elytra bear no marks behind the subbasal band which is 



