468 thansactions of the 



behind; wings none; [42] feet black; tibise and tarsi deep 

 piceotts. 



Belongs to the genus PtcrosticJius of Bonelli. 



[A A-ariety was afterwards described as F. rngicollis Hald. — 

 Leg.] 



12. F. MCESTA. — Apterous, black, glabrous ; thorax as broad 

 as the elytra, much contracted behind; elytra very obtusely 

 rounded behind, striae impunctured. 



Length seven-tenths of an inch. 



Body black, glabrous, impunctured, rounded behind ; antennae 

 brownish or ferruginous towards the tips ; palpi pieeous ; thorax 

 before the middle as broad as the base of the elytra, much con- 

 tracted behind, posterior angles obtusely rounded, dorsal line 

 very distinct, basal ones excavated, slightly punctured and placed 

 at the lateral angles, base not wider than the petiole, basal edge 

 rectilinear ; elytra slightly tinged with purplish, very obtusely 

 rounded behind, strias profoundly indented, impunctured, inter- 

 stitial lines very convex, third with about four distant punctures; 

 postpectus, peduncle punctured each side ; feet, thighs robust ; 

 tarsi piceoas. 



Is distinguished from sfygicus by the very narrow thoracic 

 base, and very obtuse termination of the body. 



[Subsequently described by Say as F. superciliosa. (Ante, 

 92 ;) and more recently by Newman as F. rclicta. — Lec] 



13. F. siGiLLATA. — Apterous, black, glabrous ; thorax slightly 

 contracted behind, anterior transverse line acute and deeply im- 

 pressed ; elytral striae punctured. 



Length more than seven-tenths of an inch. 



Body black, glabrous, impunctured ; antennae brownish to- 

 wards the tip ; labrum dark pieeous ; mandibles obliquely striated 

 above conspicuously ; palpi pieeous ; thorax broadest before the 

 middle, gradually a little contracted behind, dorsal line acute, 

 impressed, continued, anterior transverse line acute, deeply im- 

 pressed, resembling [43] a suture, area of the basal lines in- 

 dented, each with two shorter obUque lines, lateral edge slightly 

 curved, not perceptibly excurved near the base, basal angles 

 rounded, base much wider than the petiole; elytra, striae not 

 very deeply impressed, distinctly punctured, abbreviated striaj 



[Vol. II 



