Scpt.-Dec, 1921.I XOT.MAX: WeSTFIELD CoLEOPTERA. 149 



rather coarsely and closely punctured, subrugosc. Ahdonun wider than the 

 elytra with a few rather indistinct punctures laterally. Thorax, elytra and 

 abdomen with long, coarse, yellowish pubescence laterally, more abundant on 

 the abdomen. Length 5.5 mm., width 1.J5 mm. i specimen. 

 Type 26 May. 



TIlis species may he i)laced in the ainiuUiris i^M'oiip, luiviii.Lj; widely 

 open coxal fissures. The fissures are ratlier short, however, extend- 

 ing a little more than half way to the martj:in. The sutures are not 

 quite parallel with the marg^in. 



Thinobius amphibius new species. 



Form sonuwhat robust, depressed. Color piceous black, antenn.x and legs 

 slightly paler, head and abdomen slightly darker. Integuments densely and 

 finely granulate punctate, dull. Head feebly transverse, five sixths the width 

 of the thorax, vertex with a distinct impression. Eyes feebly convex, tempora 

 efjually prominent and two thirds their diameter; antennal tuberculations dis- 

 tinct. Antenna; long and slender, feebly incrassate, reaching the basal third 

 of the elytra; first, second, third and terminal joints about one half longer 

 than wide, other joints just perceptibly elongate; the terminal suddenly nar- 

 rowed to a sharp point. Thorax three fifths wider than long, about four fifths 

 the width of the elytra at apex, sides subparallel, distinctly arcuate, posterior 

 angles not distinct, base arcuate, apex slightly emarginate ; a small indistinct 

 impression either side at the base. Elytra nearly twice as long as the thorax, 

 conjointly one fourth longer than wide, sides straight, sutural emargination 

 extending to apical third, pubescence extremely fine and dense. Abdomen 

 slightly narrower than the elytra, pubescence coarser, mixed with longer 

 bristles. Length 1.1-1.4 mm., width .3-35 mm. 



Type and 8 parafypcs 26 May: 2 parafypcs 19 May. 



This species may he placed in division II of Casey's synopsis 

 (Col. Not., I. i8»So, pp. 78-89). It differs from the three species 

 therein descrihed hy its Ions? elytra and very transverse thorax. 



Thinobius tardus new species. 



This species resembles the preceding very closely but may be distinguished 

 by the following differences. Head slightly less transverse, antenna: a little 

 shorter, reaching the basal fourth of the elytra ; thorax larger and much less 

 ransverse, scarcely one third wider than long, elytra but little more than one 

 third longer than the thorax and slightly less transverse than in the preceding 

 Length i.i mm., width .35 mm. 



Type and 2 paratypes 26 ^L^y ; i paratype 19 May. 



