170 Journal New York Entomological Society. t Vo1 - xxvir. 



8. Hippodamia convergens Guerin. 



Hippodamia convergens Guerin, Iconogr. Regne Animal, p. 321, 1846. 



This species throughout its vast range from the Atlantic to the 

 Pacific and from Washington and Massachusetts southward into 

 Mexico is remarkably constant and the writer has not discovered the 

 slightest tendency toward the formation of geographic races. A 

 small percentage of the beetles in any part of its range has the elytral 

 spots reduced or even altogether absent, and much more rarely the 

 thoracic discal spots are absent. Another uncommon variation is that 

 in which the postmedian spots are somewhat enlarged and united, 

 and sometimes even the outer postmedian spot may be found jointed 

 with the subapical spot. The writer has never seen an individual in 

 which the inner postmedian and subapical spots have become united, 

 but this variation presumably occurs occasionally, and Casey's jnncta, 

 therefore, is probably nothing but an individal variant of convergens. 

 On one occasion at Salt Lake City, Utah, a pair of convergens were 

 reared from larvae collected on a sunny bank in the early spring, 

 which have the scutellar and postscutellar spots united and enlarged 

 to form a broad subcrescentiform band extending back nearly to the 

 inner postmedian spots. From these beetles a large series was bred, 

 which contained both normally and abnormally marked individuals. 

 In some of the latter the band has become jointed with the humeral 

 spots and in others with the inner postmedian spots. All these varia- 

 tions probably occur but little more frequently if at all in the Western 

 States than in the Eastern. Johnson's statement, therefore, that con- 

 vergens " flies to pieces " in the West is entirely erroneous, and based 

 upon his confusion with convergens of some five other species. 



9. Hippodamia moesta Leconte, 



Hippodamia moesta Leconte, Proc. Acad. Nat. Sci. Philadelphia, Vol. 7, p. i9> 

 1S54. 



This species which is apparently confined to the North West 

 Coastal region is most closely related to convergens in the genitalic 

 characters. The writer has examined one male from Monroe, Wash- 

 ington, in the collection of Dr. E. C. Van Dyke. 



Glacialis Group. 



The four species belonging in this group may be separated as 

 follows : 



