Goleopterological Notices, VII. 523 



Our genera are three in number and may be thus defined : — 



Met-episternum distinct, partly enclosing the hind coxae ; prothorax oval, the 

 prosternum moderately developed before the coxse ; hind body moderately 

 inflated. 

 Body stouter ; scutellum present between the elytra though minute ; first 



joint of the hind tarsi only moderately elongate £uiiiicrus 



Body smaller and more slender, the met-episternum narrower ; scutellum 

 wholly wanting ; basal joint of the hind tarsi much elongated, fully as 



long as the next two combined Acliolerops 



Met-episternum entirely covered, the hind coxse wholly enclosed by the ster- 

 num and abdomen ; prothorax narrow, strongly conic, the prosternum much 

 longer before the coxse ; hind body greatly inflated Cerampliis 



The species assigned below to Eumicrus coincide completely in 

 habitus and generic structure with the European tarsatus, the an- 

 terior tarsi being generally dilated in the male in the same man- 

 ner. Eumicrus and Acholerops are confined to the Atlantic and 

 Sonoran provinces of our fauna, while Ceramphis is purely 

 Sonoran. 



EUMICRUS Lap. 



Bod}' stout and ver}^ convex, with entire and conjointly rounded 

 elytra, which are generally impressed at base but without trace of 

 fovese. The head is large and thick, borne on a very strongly con- 

 stricted neck, the constriction appearing in vertical profile as a 

 deep and narrow cleft at each side, simple and transverse above. 

 Eyes well developed and anterior ; front narrowed and slightly 

 prolonged in the middle, the antennae quite approximate at base, 

 long and well developed, rather thick, with the basal joint some 

 what more elongate than usual, and the apical joints forming 

 the 3-jointed, incrassate and very minutely and densely pubescent 

 club characteristic of the tribe ; funicle strongly reflexile in the ex- 

 cavated apex of the basal joint. Clypeus simple, porrect, truncate 

 and moderate in length, the labrum short, transverse, bearing an 

 apical series of long stiff setae, and with a median indentation on 

 the disk. Mandibles quite well developed, the median tooth of 

 the right acute, inclined and well developed, that of the left 

 being short and hollowed in saginata. The maxillary palpi are 

 long and well developed, the second joint arcuate, third longer 

 and narrowly obconic, very finely and densely pubescent, the 

 fourth minute, rigidly and axially attached within the apex of the 

 third, obtuse and similarly densely pubescent, the labial with the 

 first joint small, the second elongate and cylindric and the third 



