N0.2U41. THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 587 



rounded, broadest midway; antennae reaching to clypeus, I scarcely 

 half as long as II. Lateral carmss of pronotum very slightly visible, 

 flexed out behmd eyes. Legs stout; hind tibiae shghtly longer than 

 femora; calcar pubescent, more than hah as long as basal tarsus. 



Described from one brachypterous female from Claremont, Cali- 

 fornia (Baker). 



Type-specimen. — In collection of Pomona College. 



Genus STENOCRANUS Fieber. 



Body slender, rather long; head with eyes narrower than pro- 

 thorax, sometimes greatly so; vertex more or less elongate, shghtly 

 converging to apex, somewhat rectangular, projecting from one-third 

 to two-tliirds its length beyond eyes; median carina strong or weak; 

 frons long and narrow, slightly broader at apex than at base, tri- 

 carinate. Eyes more or less compressed, not deeply emargmate 

 below; antennae rather short, terete, I much shorter than II. Thorax 

 slender; lateral carinae usually reaching hmd margin; scuteUum tri- 

 carmate. Calcar tectiform, the margins usually rather close together 

 with pubescence between. Female ovipositor sheath often broadened 

 or foliaceous and appressed to genital segment. 



Type of genus. — Stenocmnus minutus Fabricius (probably). 



KEY TO THE SPECIES. 



a'. Calcar unusually large and foliaceous; vertex rather long in front of eyes; frons 

 pale, with a brown band below antennae; basal antennal joint only a little 



shorter than II palaetus Van Duzee. 



a^. Calcar not unusually large, seldom foliaceous, margins usually close together and 

 pubescent; antennae with I much shorter than II. 

 b\ Female ovipositor sheath broadened conspicuously, not styliform or cylindrical. 

 c\ Frons narrowed above, sides subparallel from odelli to apex; vertex not pro- 

 duced more than one-third its length beyond eyes. 

 d\ Vertex not more than one and a half times as long as broad posteriorly; frona 

 usually less than thi-ee times as long as broad. 

 e^. Female ovipositor sheath broadly elliptical, broadest midway, usually 



black between carina dorsalis Fitch. 



c2. Female ovipositor sheath broadest apically, pyriform; frons pale brown 



between carinae; vertex and frons relatively shorter. . .felti Van Duzee. 



d^. Vertex at least twice as long as broad; frons narrow, fully thi-ee times as 



long as broad, or more, black between carinae angustus, new species. 



c^. Frons broadest at apex, sides uniformly diverging from base; female ovi- 

 positor sheath less foliaceous, narrower, 

 t/'. Vertex produced nearly one-half its length before eyes, narrow, about two 



and a half times as long as broad saccharivorus Westwood. 



c/2. Vertex produced considerably more than half its length before eyes, beak- 

 shaped, fully four times as long as broad rostrifrons, new species. 



b^. Female ovipositor sheath cylindncal at least on apical tliree-fourths. 

 c\ Ovipositor sheath broadened somewhat at base; vertex produced about one- 

 third its length before eyes; antennae with II four times as long as I. 



similis, new species. 

 c2. Ovipositor sheath only slightly broadened at base ; vertex produced less than one- 

 third its length before eyes; antennae with II less ban foiu- times as long as I. 



a'oceus Osborn and Ball. 



