HAGEN.J ZOOLOGY PSEUDO-NEUROPTEEA AND NEUEOPTEEA. 599 



NEUEOPTERA. 

 Family HEMEROBINA. 



POLYSTCECHOTES. 



P. pimctatus, Hagen, Syn., 206, 1. 



The species is very common everywhere in the UDited States, from the 

 Gulf of Mexico to British America and from the Atlantic to the Pacific. 

 Curiously enough, the previous states of this beautiful and very inter- 

 esting species are still unknown. From analogy, and even from the 

 fact that the larva of this large and everywhere common species was 

 not yet observed by American entomologists, it is safe to presume that 

 the larva will be aquatic, with habits similar to the larva of Osmylus, 

 and must be looked for in the months of April and May, perhaps even in 

 June, as the imago appears in the middle of July, and continues until 

 the arrival of the cold weather. J saw a large cluster of eggs on a. leaf 

 in the collection of Mr. A. Lintner in Albany, iT. Y,, probably belong- 

 ing to this species. 



Habitat. — Yellowstone (Mr. C. Thomas) ; Colorado Mountains, August 

 29, foot-hills, September (Lieutenant Carpenter) 5 Twin Lake, August. 



The following ffemerohince are unfit for scientific purposes, having 

 been collected in alcohol or put together in papers with Lepidojjtera, 

 and covered throughout with lepidopterous scales ; the last ones cannot 

 be cleaned without being more or less spoiled. 



MICROMUS. 



One specimen, related to M. sobrius, from foot-hills, Colorado. 



HEMEEOBIUS. 



One specimen, from Fair Play, July 11, related to H. alternatiis, and 

 two other species, Colorado Mountains, July ; entirely unfit for deter- 

 »mination, except to say that there are two different species. 



CHRYSOPA. 



There are three species, one from the Snake Eiver, Idaho (Mr. C. 

 Thomas), belonging to the group of C. oculata, probably new ; and two 

 from Colorado plains, belonging to the groups of G. nigricorms and C. 

 externa. A description of new species based upon single specimens in 

 this very dilficult genus is scientifically objectionable, especially when 

 the single specimens are imperfect. 



? MYRMELEON. 



M. diver sus, Hagen, Eeport for 1872, p. 729. 

 Habitat. — Yellowstone and Snake Eiver, Idaho. 



Family SIALINA. 



COEYDALIS. 



A not full grown larva from Chiquili, Colo. (Professor Newberry). The 

 larva differs from those of C. coruuta by a longer prothorax, luteous 



