302 Coleopterological Notices, V. 



portions of the continent. The three species here brought to notice 

 may be readily distinguished as follows : — 



Elytra but slightly longer than the prothorax, the apical angles of the latter 

 blunt but rather distinct ; antennae shorter and less incrassate. 

 Abdomen less elongate, slightly narrower than the elytra, strongly distinctly 

 and moderately densely punctate, the dorsal plates strongly transverse. 



laticollis 

 Abdomen longer, much narrower than the elytra, very finely densely and 

 indistinctly punctate, the dorsal plates less than twice as wide as long. 



angustiTeiitris 

 Elytra decidedly longer than the prothorax, the apical angles of the latter 

 more broadly rounded ; abdomen nearly as in laticollis, but differing con- 

 spicuously in coloration; size small asperata 



I am unable at present to say anything about the habits of these 

 insects, but in Europe they are generally inquilinous with ants. 



T. laticollis n. sp. — Rather stout and convex, dark piceo-rufous, thp, 

 abdomen uniformly blackish but pale at the apex ; legs and antennae rufo- 

 testaceous, the latter just visibly clouded toward the middle ; head finely 

 but strongly, the pronotum more finely and xqyj densely, the elytra strongly 

 densely and subasperately punctate ; abdomen with imbricate sculpture, gradu- 

 ally disappearing behind, the punctures fine but strong, isolated and distinct, 

 sparse toward tip ; pubescence very short, stiff and rather dense. Head orbicu- 

 lar, not as long as wide, but slightly more than one-half as wide as the pro- 

 thorax ; eyes large, prominent, at less than their own length from the base; 

 tempora convergent and broadly rounded behind them ; antennae a little longer 

 than the head and prothorax, rather slender, feebly incrassate, the joints 

 somewhat compactly united, the first and third subequal, longer than the 

 second, fourth and fifth slightly longer than wide, tenth scarcely visibly 

 wider than long, eleventh as long as the two preceding, pointed, constricted 

 just beyond the middle. Prothorax transverse, not quite twice as wide as long, 

 the apex subtruncate, about three-fourths as wide as the base, the latter 

 broadly, feebly arcuate, distinctly sinuate near the basal angles, which are 

 nearly right though slightly blunt ; sides convergent and feebly arcuate in 

 apical two-thirds, just visibly convergent in basal third ; disk even. Elytra 

 transverse, at base quite distinctly narrower than the prothorax, slightly 

 longer than the latter ; sides just visibly arcuate ; disk rather convex, feebly, 

 indefinitely impressed on the suture toward base. Abdomen — when contracted 

 — scarcely as long as the anterior parts, parallel, slightly but distinctly nar- 

 rower than the elytra, the border thick ; first three segments feebly and gradu- 

 ally less distinctly impressed at base ; fourth and fifth equal. Length 2.7 

 mm. ; width 0.8 mm. 



New York. 



The single specimen is of undetermined sex; it represents a larger 

 broader and more distinctly sculptured species than the following. 



