154 Mr. G. Lewis on 



Trihalus semen, Lew. Ann. & Mag. Nat. Hist. xiii. p. 137 



(1884). 



Breviter ovatus, parura convexus, undique punctulatus, nigro-piceus, 

 subnitidus ; fronte leviter impressa, supra oculos clevata ; pro- 

 noto stria marginali integra ; elytris stria humerali externa integra 

 haud carinata. 



L. 2 mill. 



Shortly oval, rather convex, rather finely and rather densely 

 punctured, with the elytra finely strigose except on the di^k : 

 the forehead is feebly impressed and somewhat elevated over 

 the eyes ; the thorax, marginal stria complete and obscurely 

 crenate behind the neck ; the elytra, outer humeral stria 

 complete, raised, but not carinate, and there are short traces 

 of two dorsal striae ; the pygidia are finely and densely 

 punctulate; the prosternum, anterior lobe coarsely and some- 

 what rugosely punctured, keel less closely punctate, especially 

 at the base, the strise turn slightly inward anteriorly; the 

 mesosternum is not quite straight, being very slightly arcuate 

 behind the prosternal keel, punctured like the keel, and very 

 narrow and transverse, sutural stria rather widely and irregu- 

 larly crenate. 



The original notice of this species gave insufficient cha- 

 racters; it may be placed near T. bicarinatus, unistrius, and 

 cyclo7iotus } Lew., but the last is a convex species; all are 

 Uiiental. 



llab. Kiga, Japan. 



Pachycrcerus atratus, sp. n. 



Ovalis, supra paruru convexus, niger, nitidus, punctulatus ; fronte 

 tenuiter impressa; pronoto undique punctato, stria marginali 

 antice interrupta ; elytris striis 1-4 integris, 5 dimidiata, suturali 

 basi abbreviata ; propygidio pygidioque grosse et dense punctatis ; 

 prosterno bistriato ; mesosterno stria marginali integra. 



L. 3| mill. 



Oval, rather convex, black and shining; the head feebly 

 impressed anteriorly, rather closely and finely punctured, stria 

 complete but rather fine, especially in front ; the thorax 

 wholly punctate, closely laterally, rather less closely on the 

 disk, marginal stria interrupted behind the head ; the elytra, 

 stria?, outer humeral fine and dimidiate, inner wanting, 1-4 

 dorsal complete, 5 dimidiate, sutural shortened before the 

 base, surface finely punctulate, with larger points along the 

 apical margins; the pygidia are densely and coarsely punc- 

 tured ; the prosternum, keel bistriate, strife well-marked and 



