Coleopterological Notices, V. 841 



Brachida noiha before me, the middle tarsi are clearly four-jointed, 

 but they are equally plainly five-jointed in Trichiusa, and the two 

 genera differ completely in the form and relations of the intermeso- 

 coxal sclerites. 



Although most closely allied to Hoplandria, the species of Tri- 

 chiusa bear a striking resemblance to Gyrophaena, having the same 

 stout compact form, but may be known by the long hirsute vesti- 

 ture and the distinctly five-jointed middle tarsi. Of the following 

 five species, the first is to be considered the type; they are however 

 all congeneric: — 



Aiiteimse strongly incrassate and stout from the fourth joint, which is strongly 

 transverse COmpacta 



Antennae not so thick, more gradually and feebly incrassate, the fourth joint 

 subglobular and only slightly transverse. 

 Body black throughout. 



Prothorax at base nearly as wide as the elytra, the humeri scarcely at 

 all exposed. 

 Deflexed apical angles of the prothorax obtuse but only very narrowly 

 rounded ; elytral vestiture shorter, coarser and sab3.eeumbent, a few 



long erect setae bristling along the sides of the body setigera 



Deflexed apical angles rounded ; vestiture throughout the body con- 

 sisting of long equal closely placed and erect hairs, without longer 



bristling setse along the sides , pilosa 



Prothorax at base narrower than the elytra, the humeri distinctly ex- 

 posed ; vestiture rather long but decumbent ; lateral setse subobsolete. 



robustula 



Body pale rufo-testaceous throughout, with a small piceous spot toward the 



middle of the fourth tergite ; prothorax small ; humeri broadly exposed ; 



vestiture very long, sparse but shaggy parTicollis 



The species appear to be rather numerous, and others are perhaps 

 known at present in cabinets. 



T, compacta n. sp. — Stout, subparallel, convex, shining, the elytra 

 polished, black, the antennse toward base, elytra, apical parts of the first 

 three tergites and legs paler, rufo-testaceous ; head and pronotum very 

 minutely sparsely punctate, the former with some larger punctures, the 

 latter with a few scattered large punctures toward base ; elytra rather 

 coarsely, sparsely and somewhat irregularly punctured ; abdomen sparsely, 

 minutely granulato-punctate, the impressed parts subimpunctate ; pubescence 

 rather long, sparse and coarse. Head three-fourths as wide as the prothorax, 

 wider than long, with a feeble central impression, the antennae longer than 

 the prothorax and elytra, strongly incrassate. Prothorax a little less than 

 twice as wide as long ; sides subparallel, arcuate ; base and apex broadly, 

 strongly arcuate ; apical angles moderately deflexed, broadly rounded ; basal 



