THE CANADIAN ENTOMOLOGIST. 395 



development and persistence of the diverging thoracic lines, represented 

 by convergens. 



The ^sig/iafa group comprises by far the greater number of species. 

 Moesta, Lee, has a very uncertain taxonomic status but is evidently a 

 member of the j-signata series ; we have as yet no biological evidence 

 concerning its relationships. Ambigua, Lee, of broadly oval form and 

 constant absence of elytral maculation, is one of the most isolated species 

 of the entire genus and without any close affinities. Extensa, Muls., 

 though a member of this series, differs from the common forms of the 

 j-signata or LeContei types in its very finely-reflexed elytral side margins, 

 and it is undoubtedly a distinct species, probably having as a subspecies 

 leporina, Muls. Mulsant (Mon., 1866) states of leporina that it is 

 elongate-oval, slightly convex, with a black pronotum, having at each side 

 a white border almost interrupted at the middle, the elytra with a sub- 

 basal band from callus to callus, and each with two black spots, the 

 anterior somewhat in transverse triangle, the subapical smaller, obtriangu- 

 lar and united with the preceding ; dimensions, 5.6 X4.2 mm. California. 

 So it cannot be considered in any way related to vernix, as stated by 

 Leng. Orego?iensis, Cr., is described as having a subbasal elytral band, 

 with the posterior spots united to form a lunule, and the white thoracic 

 side margin narrow; it is therefore probably a distinct species in this 

 immediate neighbourhood, or, if not, may be a subspecies of extensa. 



The species described by Kirby as 5 ^4'"''^^;'^, is essentially a boreal 

 form, and may be known by the generally broad, solid and even bioblique 

 subbasal band of the elytra, with a thick and obliquely transverse post- 

 median and full rounded subapical spot on each. The white lateral 

 thoracic margin is confined to the apical angles ; this oblique white area 

 may sometimes be visible also at the basal angles, though I assume very 

 rarely, and those examples with the pale area running down the sides, 

 cited by Crotch, belong without much doubt to another species, mentioned 

 below, and accidentally mingled with his true j-signata. The following 

 is a more southern subspecies oi j-sigfiata : 



H. cocciiiea, n. subsp. — More narrowly oval and smaller than 

 ^-sigtiaia, similarly moderately shining, closely and rather coarsely 

 punctate ; head black, with a large and irregularly rhomboidal pale spot ; 

 pronotum solidly black, without discal pale spots, the black area broadly 

 bilobed in front, the lobes tangent to the apical margin, the sides obliquely 

 pale in front, not at all pale posteriorly ; elytra with a broad subbasal 



