1S73.] 2G1 



6 — 10 slightly produced (sub-scrratc) within ; epistoma armed in front with a 

 short, sloping, strongly compressed, conical tooth, or horn ; at the inner corner of 

 each eye a short, spine-like horn, sloping towards the front ; prothorax depressed, 

 transverse, finely and not closely punctm-ed, with several shallow impressions along 

 the base, the median furrow famtly (except at the base) impressed ; the processes 

 in front three in number, the two lateral robiist, continuous -with the lateral mar- 

 gins of the prothorax, extending over the head to a level of the insertion of the 

 antennse, obliquely truncated at the apes, their inner side concave ; the 3rd is 

 central, compressed, sub-cylindric, of nearly equal length to the two outer ; elytra 

 seriate-punctate, obsoletely so at the apex, intervals very minutely and sparingly 

 punctulate ; flanks of prothorax rugosely punctured, but not closely so. 



Length, SJ lin. ; width of elyti-a, If lin. 



Sal.: "Colombia;" a single {^) example in tlie Collection 

 Laferte. 



This species differs sub-geuerically from those preceding in 

 having the two outer thoracic processes continuous with the lateral 

 margin of the prothorax. 



METULOSONIA, gen. nov. 



Near Peltoides, and having quite a similar f acies, but readily sepa- 

 rable by the eyes being larger, wider, more prominent, and but slightly 

 narrowed in the middle by a prolongation of the antennary orbits in 

 front, or by an expansion of the cheeks behind ; the head smaller and 

 narrower ; the antennary orbits smaller, narrower, less prominent, 

 not angular, and not projecting laterally beyond the eyes ; the pro- 

 sternal process horizontal, acutely prolonged behind, and penetrating 

 deeply into the mesosternum, which is vertical in front, and cleanly 

 and deeply excavated in the form of a V. As secondary characters, the 

 form is more elongate-oval, or elliptical ; the median basal lobe of 

 prothorax narrower, more prolonged, so that a straight line drawn 

 from its lower edge would neai'ly include the hind angles ; the 3rd 

 joint of antennpe relatively shorter ; and the prothorax has, near the 

 sides, the larger scattered punctures characteristic of TJlosonia and 

 the allied South American genera of this section of the sub-family. 



The form of the head in this genus very closely approaches that 

 in Ulosonia, but the epistoma is shorter, more broadly truncated in 

 front, and not at all reflexed at the lateral borders ; it is not concave 

 between the eyes ; it is unarmed, but there is a decided tuberculiform 

 elevation near the inner margin of each eye. The form of the head 

 in Peltoides more closely resembles that in Alphitohius than in either 

 the present genus or in Ulosonia. 



