156 Coleopterological Notices. 



cence moderate in length and density, nniforraly dark fulvous throughout. 

 Head finely and strongly granulato-reticulate, feebly convex, finely, feebly, 

 somewhat sparsely and not distinctly punctate ; epistoma more coarsely and 

 densely so ; epistomal suture fine ; lateral antennal emarginations deep, ex- 

 posing the entire basal joint of the antennje which is large. Pr othor a x mwdh 

 more than twice as wide as long ; sides very feebly arcuate ; apex two-thirds ' 

 as wide as the base, the latter sinuate at each side of tlie basal lobe which is 

 broad and feeble ; median groove entirely obsolete ; surface minutely reticulate, 

 very strongly so near the sides, excessively obsoletely so in the middle ; jjunc- 

 tures very fine and sparse. Scutellum large, equilatero-triangular ; sides and 

 base straight. Elytra scarcely four times as long as the prothorax and about 

 one-third wider ; sides strongly arcuate and coarctate with those of the pro- 

 thorax ; surface finely but rather feebly reticulate, the reticulations forming 

 polygonal rings about the punctures, the latter very minute, each in the centre 

 of a small reticulation, and entirely filled by the hair arising therefrom, rather 

 sparsely and evenly distributed. Prosternum transversely convex, without 

 trace of impressed groove, very minutely, sparsely punctate, reticulate later- 

 ally ; episternum small, not approaching the apex by its own length, very 

 abruptly and clearly lindted ; hypomera flat, reticulate, not impressed, very 

 minutely sparsely punctate, without trace of inner marginal bead. Abdomen 

 finely and strongly reticulate throughout, finely, sparsely punctate, the last 

 segment more densely so ; pubescence rather long, coarse and sparse, denser 

 in the middle of the last segment which is not at all impressed, the apex with 

 a broad shallow emargination. Length 1.8 mm. 



California (Hoopa Yalley, Humboldt Co.). 



For the present this species may be considered the type of a sub- 

 genus of Limnichus, but it is almost unquestionably of higher value, 

 the unimpressed prosternum, long antenna3, and large equilateral 

 scutellum distinguishing it at once from any of the others. If it 

 is considered generically distinct, however, the lutrochinus group 

 must also be separated on other, but equally decisive characters. 



L,. iiaTiculatus n. sp. — Almost evenly oval, about three-fourths longer 

 than wide, acutely rounded but not pointed behind, convex, rufo-castaneous 

 above, slightly paler rufo-ferruginous beneath, feebly shining. Head rather 

 convex, excessively minutely, moderately densely punctate. Prothorax small, 

 fully two and one-half times as wide as long; sides straight; apex nearly 

 three-fourths as wide as the base ; basal lobe rather short and feeble ; disk 

 extremely minutely and moderately densely punctate, the median groove com- 

 pletely obsolete. Scutellum small, flat, equilatero-triangular. Elytra fully 

 four times as long as the prothorax and one-third wider ; sides strongly, 

 evenly arcuate and coarctate with those of the prothorax ; surface polished, 

 not reticulate, the larger punctures — bearing the longer hairs — small, perfo- 

 rate, separated by from four to five times their own diameters, the minute 



