PTEROSTICHIN.E 337 



table, is designed to include both groups, for the basal margination 

 of the prothorax is diversified in each. Besides inanis, angustus, 

 crucialis, pumilus, humilis and ovicollis, as known to me among my 

 material, this genus will include also longicollis Lee., caligans Horn 

 and fuchsi Schf., the latter not correctly identified in my previous 

 work, having the basal thoracic angles not "obtuse" but minutely 

 sharp and prominent; it will also include the three following species: 



Leptoferonia larvalis n. sp. Body very small, narrowly elongate-oval 

 and convex, shining, pale testaceous in color; head notably small, barely 

 three-fifths as wide as the prothorax, elongate, with very moderate and 

 barely convex eyes; antennae testaceous, moderately compressed, fili- 

 form, slender on the narrow side, extending barely beyond the thoracic 

 base; prothorax very slightly elongate, the completely margined base 

 fully as wide as the feebly sinuate apex and five-sixths the maximum 

 width, the sides very broadly, moderately arcuate, a little less so basally, 

 the basal angles obtuse but with the apex slightly prominent and not 

 rounded, though not sharp at tip; foveae single, parallel to the axis, recti- 

 linear and not attaining the base, the external fovea and carina wanting; 

 elytra oval, three-fourths longer than wide, at the middle barely a fifth 

 wider than the prothorax; striae moderately deep, scarcely different api- 

 cally, the scutellar moderate but evident; punctures of the lateral series 

 widely spaced submedially; intervals broadly, not strongly convex. 

 Length (9) 6.65 mm.; width 2.35 mm. California (Hoopa Valley, 

 Humboldt Co.). 



Allied to humilis and placed with the female type of that species 

 in my former study, but differing in its more slender form, narrower 

 head, smaller and less prominent eyes and rather more slender an- 

 tennae; the elytral apex is more obtuse and, in both, the sinus is 

 obsolete; the elytral striation is similar in the two; the sides of the 

 prothorax are a little more sinuate just before the basal angles in 

 humilis. 



Leptoferonia fugax n. sp. Elongate, slightly suboval, convex, polished, 

 piceous-black, the under surface and legs dark rufous; head elongate, 

 not quite three-fourths as wide as the prothorax, the eyes well developed, 

 slightly prominent, the anterior sulci strongly anteriorly converging; 

 antennae testaceous, somewhat as in the preceding but extending well 

 behind the thoracic base; prothorax barely longer than wide; base wholly 

 margined, biarcuate, somewhat wider than the very feebly sinuate apex; 

 sides parallel, feebly arcuate, rather rapidly but feebly oblique basally 

 to the obtuse though prominent and sharp basal angles; single subbasal 

 foveae small, short and feeble; medial stria rather deep, biabbreviated; 

 elytra two-thirds longer than wide, not quite a fourth wider than the 

 prothorax, obtuse at tip, the parallel sides but feebly arcuate, more so 

 near the base, the humeri strongly denticulate; stri'ae deep, a little shal- 

 T. L. Casey, Mem. Col. VIII, Oct. 1918. 



