128 CALIFORNIA ACADEMY OF SCIENCES. 



Two ? specimens from San Jose del Cabo (Eisen). 

 This is one of the forms which usually passes for this 

 species, but which, I think, will probably prove a distinct 

 species. 



i6. Paniscus medius sp. n. 



? . — Length 12 mm.; ovip. 2 mm. Brownish-yellow; 

 face and clypeus yellowish-white; ocelli large, prominent, 

 the lateral touching the eye; eyes distinctly emarginate 

 within; thorax smooth, trilobed; metanotum smooth, with- 

 out a vestage of carince; wings hyaline, the costa and 

 stigma brownish-yellow, the other nervures black, the 

 discoidal nervure with a distinct stump of a vein; abdo- 

 men twice as long as the head and thorax united, strongly 

 compressed, viewed from the side, not much broadened 

 towards apex; the petiole is a little more than one-third 

 longer than the second segment, with the spiracles placed 

 at two-fifths its length, the second segment is about 2^ 

 times as long as wide at apex. 



Described from one ? specimen, from San Esteban 

 (Ilaines). 



This species resembles somewhat P. texamts, but is 

 larger, differently colored, with a stump of a vein in the 

 discoidal nervure, and with the segments of the abdomen 

 relatively different. 



Exetastes Gravenhorst. 

 17. Exetastes fascipennis Cress. 



Proc. Ent. Soc. Phil., iv, p. 278. 



Two ? specimens from Comondu, March, i8S9( Haines). 

 i8. Exetastes obscurus Cress. 



Proc. Ent. Soc. Phil., iv, p. 281. 

 One 3 specimen from Comondu, March, 1889 (Haines). 



19. Exetastes scutellaris Cress. 



Proc. Ent. Soc. Phil., iv, p. 279. 

 One $ and two 3 specimens from San Esteban (Haines), 

 April, 1889. 



