GEOLOGICAL SURVEY OF THE TERRITORIES. 729 



Sjpecies not belonging to Odonata. 



HET^EINA. 



H. Cal'ifornica, Hag. Syn. N. Amer. Neurop., 59, 2. 



The fragments of three males are uot to be separated from the type 

 iu my collectiou. (Some fragments.) 



POLYSTCECHOTES. 



p. pimctatus, Hag. Syn. IsT. Amer. Neurop., 206, 1. 



Very common everywhere in the whole United States. (Numerous 

 specimens.) 



STATHMOPHORUS. 



Spec. — Only a male related to St. Argus, Harr., perhaps distinct. The 

 male of St. Argus is still unknown. 



PTERONARCYS. 



Pt. CaUfornica, Hag. Syn. N. Amer. Neurop., 16, 5. 

 A female ; a decidedly western species. 



MYRMELEON. 



31. diversus, uov. sp. 



Brown, covered with grayish powder ; head pale yellowish near the 

 mouth and the eyes; two black spots, on the clypeus; front largely 

 shining black, brown mat behind the antennte; on each side of the occiput 

 a yellow spot, and near the middle a yellow band, attennated and inter- 

 rupted in the middle ; an tenure short, black, annulated finely with yellow, 

 the tips enlarged brownish; palpi yellow, the last joint black; last joint 

 of the labial palpi longer, ovoid, black, cylindrical at the truncated tip; 

 prothorax quadrangular, a little narrower and rounded before, dull yel- 

 lowish, with two interrupted l)rown lines in the middle, and one on each 

 side, not reaching the anterior jjart; thorax and abdomen brown, a final 

 yellowish triangular spot on the segments; legs yellowish ; femora be- 

 hind in the middle, tibine inside, and basal joint on tip black; spurs as long 

 as the first joint; wings hyaline, veins yellow, spotted with black on the 

 radius, and most of the small furcations; stigma small, whitish. The 

 species belongs to the genus Myrmeleon., and is related to the M. formi 

 carium. I believe a si^ecimen in very bad condition, from the Pecos 

 River, W. Texas, belongs here. (Two specimens.) 



