346 



above ; hind pair almost wliolly black, testaceous beneath ; tip of hind 

 femora, outer three-fourths of the tibiffi, and base of first tarsal joint, 

 black; claws of all the legs, dark; base of the first segment of the 

 abdomen, black ; the remainder reddish testaceous, except the four 

 terminal black joints. 



Length, .40 inch ; length of fore wing, .23 inch. 



? The female differs in having the antenna; darker, and being 

 broadly annulated with white in the middle. The labial palpi are dark 

 throughout, with only the tips of the joints pale whitish. Fore tro- 

 chanters touched with reddish beneath, while the two hinder pairs are 

 Avholly reddish testaceous. The legs are as described above, except 

 that the fore and middle coxje are testaceous, and not pale as in the d. 

 The abdomen does not differ in coloration : the ovipositor itself is red- 

 dish black, while the sheath is black. 



Length, .44 inch; including the ovipositor, .65 inch; length of fore 

 wing, .33 inch. 



The other species is one-half as large, and differs from C. smnim by 

 its wholly black antennte and abdomen. I propose for it the name — 



Cryptus Smithii (n. sp.). 



cf Head, thorax, and abdomen, black ; antennas, blackish-brown 

 throughout ; palpi, pale testaceous ; legs, reddish testaceous, — the 

 hind pair, with the outer two-thirds of the tiblse, blackish ; coxae and 

 trochanters, reddish testaceous. 



Length, .23 inch ; length of fore wing, .18 inch. 



The female differs from the other sex only in coloration, by the 

 duller, darker legs ; the antennse being the same. 



Length, .27 inch ; including the ovipositor, .35 inch ; length of fore 

 wing, .25 inch. 



This species is duller colored than C. samice, which is shining jet- 

 black or testaceous, as the case may be. The middle meso-scutal 

 piece is much narrower, longer, and more distinct, in C. samice ; the 

 c? abdomen is longer ; and the ovipositor, which is longer than the ab- 

 domen in C. samice^ is nearly a third shorter than the abdomen in 

 C. Smithii. The meta-thorax of C. Smithii is much rougher than that 

 of C. samice. 



Among twenty specimens of the larger sj^ecies, there was no marked 

 variation: but one of the smaller species (C. Smithii), of which there 

 were ten cf and ? specimens, was a d which is a little larger than the 

 others ; i.e., .30 inch long. However, the abdomen differed from that 

 of C samice in being less clavate, more acute at the tip, and flatter 

 throughout, being more ovate. 



Dr. Charles Pickering, referring to the discussion at the 



