142 ENTOMOLOGICAL SOCIETY 



G. latreillei l.ob. Desvoidy, Myod., 237. The description is 

 accompanied by the remark : " I do not know the country of 

 this species ; observed in the collection of the Count Dejean." 

 I venture to rescue this from the fugitive list and refer it to 

 North America, probably Carolina. From Desvoidy 's de 

 scription I have little doubt that it is the 9 of fuliginosa. 



G. atra Rob. Desv., Myod., 238. This is another of Des 

 voidy 's fugitive species, which he found in Dejean' s collection. 

 I strongly suspect that it is the same as Cistogaster pallasii 

 n. sp., described in this paper. If it is the same, I am rather 

 surprised that Desvoidy did not refer it, on account of its 

 short antennae, to his genus Pallasia (syn. of Cistogaster]. If, 

 however, he trusted to the appearance of the specimen, its 

 habitus is strikingly like Gymnosoma. 



Cistogaster divisa H. L/w. This should be known as octidua 

 Wlk. Lcew described the $ of Walker's species. It is 

 found from Connecticut and District of Columbia to South 

 Dakota (Aldrich), Colorado and California (Williston). There 

 is little reliance to be placed on the character of the apical cell 

 in this genus. While Gymnosoma uniformly has it petiolate, 

 twenty-two specimens of C. occidua that I have examined have 

 it petiolate (all $ ), and eleven have it closed in the border 

 (seven 9 9 and four $ $). The females of this species vary 

 very much. I have one in which the abdomen is of the same 

 bright ferruginous as that of the $ , while a small specimen 

 has the abdomen of a uniform black, nearly V^L^ pallasii n. sp., 

 but not shining as in that species. In some females also the 

 black on the sides of the front is of much greater extent and 

 very pronounced. While the claws in Gymnosoma are nearly 

 the same length in both sexes, those of the $ are much 

 elongated in Cistogaster. 



C. immaculata Mcq. I have not seen the description of this 

 species. 



Cistogaster pallasii nov. sp. 



? Syn. Gymnosoma atra Rob. Desv. 



Female Wholly black. Front about one-third the width of the head, 

 shining black on the sides with black hairs ; vitta dark reddish-brown, 

 of nearly equal width ; face and borders of the eyes silvery white, polli- 

 nose ; antennae short, brownish, black at the tip ; second joint reddish 

 on the sides, slightly silvery in some lights, with a few black hairs on its 

 dorsum ; third joint a little longer than the second, reddish at base, the 

 remainder black ; proboscis blackish, palpi light reddish-yellow ; cheeks 

 and occiput cinereous pollinose, gray hairy on the sides and particularly 

 below, with black hairs on the upper border. Thorax shining black, 



