BY THOMAS G. SLOANE. 571 



A. distinct species allied to H. imperiale, SI., and //. breve, 

 Motsch., but differing greatly from both these species in facies — 

 prothorax less transverse, less strongly narrowed to base, as wide 

 across base as apex, less rounded on sides; elytra less rounded on 

 sides, etc. It may be noted that these three species are without 

 a puncture at base of first interstice of elytra near origin of first 

 stria. 



HOMALOSOMA PORPHYRIACUM, n.sp. 



9- Robust; head large, deeply biimpressed on front; j^rothorax 

 subcordate; elytra oval, third, fifth and seventh interstices sub- 

 carinate, humeral angles dentate, inner side of margin seriate- 

 punctate. Upper surface of head and prothorax shining metallic 

 purple; elytra dark purple, opaque, summits of costse nitid, lateral 

 margins dark purple, shining; under surface black, shining — sides 

 of head, pi'osternum and body with purple reflections; legs black. 



Head large (8x8 mm.), swollen on each side behind eyes; front 

 with a wide deep concavity on each side. Prothorax finely trans- 

 ver.sely striolate, subcordate, widest before middle (6 8 x 9"3 mm.); 

 sides rounded on anterior two-thirds, strongly sinuate posteriorly; 

 basal angles widely rounded, not marked ; apex emarginate, 

 angles obtuse, not prominent; base lightly and widely emarginate 

 in middle; median line lightly impressed ; lateral basal impres- 

 sions wide, deep; posterior marginal puncture placed near margin 

 considerably before basal angle. Elytra much wider than pro- 

 thorax (18 X 12-5 mm.), widest a little behind middle, lightly 

 convex, abrupt on sides from carina of seventh interstice; sides 

 strongly rounded; apex widely and CA^enly rounded; stria? finely 

 punctate: third and fifth interstices strongly costate (the costse 

 not reaching base); seventh carinate, second, fourth, sixth and 

 eighth depressed, ninth merged with margin, third with four 

 punctures on apical half; a setigerous puncture placed a little 

 distance from base of first interstice on course of first stria; basal 

 border forming a short prominent projection at each humeral 

 angle. Prosternum, mesosternum and metasternum glabrous. 

 Abdomen plurisetose at apex. Length 35, breadth 12-5 mm. 



