590 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



Female ovipositor sheath somewhat similar to rostrifrons, nar- 

 rower than in dorsalis. 



Redescribed from three males and four females from Habana and 

 Cayamas, Cuba (Baker). This species in some respects resembles 

 S. rostrifrons. They correspond very closely with. Westwood's original 

 description. 



STENOCRANUS ROSTRIFRONS. new species. 

 Plate 46, fig. J; plate 49, fig. P. 



Length of body, 3.6 mm.; width of vertex, 0.20; length to apex of 

 head, 0.72; width of frons, 0.21; antennae I, 0.07; II, 0.21. General 

 color yellowish orange; frons with a slender black stripe near apex of 

 head above; antennae lineated narrowly with black beneath or in 

 front. 



Head long, narrower than prothorax, strongly carinate between 

 eyes, produced almost two-thirds of its length beyond eyes, curved 

 down somewhat and resembhng very closely a bird's beak, acute at 

 apex; vertex very elongate, narrow, about four times as long as 

 broad, narrowed anteriorly; median carina almost wanting; frons 

 elongate, broadest below, not strongly carinate; eyes rather small; 

 ocelli conspicuous. Antennae not as long as width of head between 

 antennal sockets, II about three times as long as I. 



Thorax slender, long, not strongly carinate; pronotum about two 

 and a half times as long as scutellum, broadly emarginate behind. 

 Calcar typical, pubescence slight. Elytra long, strongly attenuate 

 at base, more rhomboidal apicaUy than in congenoi-s, maculate on 

 membrane veins ; venation somewhat different from that of congenors. 



Female ovipositor sheath somewhat broadened, about midway 

 between foliaceous and cylindrical. 



Described from one female from Habana, Cuba (Baker). 



Type- specimen. — In collection of Pomona College. 



STENOCRANUS SIMILIS, new species. 



Plate 46, figs. D, H. 



This species is about the same size throughout as S. dorsalis, and 

 superficially resembles it very closely. The dorsal white vitta is 

 seldom or indistinctly present; general color similar; frons less black 

 between carinae. 



Vertex relatively shorter than in dorsalis, projecting a little less 

 before eyes; antennae longer, II almost four times as long as I. Pro- 

 thorax about as long as vertex; calcar large; elytra similar except 

 that macula covers posterior half entirely or nearly so, not extending 

 on to corium. 



Male pygofers large; anal tube long; produced ventrad into 

 two much longer processes than in dorsalis; anal style short; genital 

 styles large, constricted one-third of length from base, distal third 

 converging to acute apex. 



