64 Mr. F. P. Pascoe on new Oenera and 



shaped, or like a hair or bristle, and standing off from the 

 derm. The latter are often denominated " setulae." 



Tychanus. 



Acalli vicinum, sed prothoracc basi bisinuato, et scutello manifesto. 

 nostrum tcnuatum. Antenna' in medio rostri insertae. Elytra 

 callosa, prothoraco basi baud latiora. Femora infra dentata. 



It would, perhaps, be difficult to define-4ca?/es very strictly, 

 the species showing so many structural modifications ; but it is 

 quite certain that such a character as the prothorax presents 

 in the present genus may be advantageously used in facilitating 

 the systematic location of the numerous species, mostly small 

 and dull-coloured, which centre round Tragopus, from which 

 Acalles itself is but little removed. 



Tychanus gihhus. 

 T. breviusculus, fuscus, sat dense griseo-sqamosus ; rostro modice 

 arcuato, protborace vix breviore ; funiculo articulis duobus basa- 

 libus elongatis ; prothoracc utrinque pone apicem fortiter calloso, 

 apice ipso constricto, et supra bit'asciculato ; elytris apicem versus 

 gradatim latioribus, fere a medio declivibus, dorso elcvato, bi- 

 cristato, latcribus fortiter carinatis, sulcato-punctatis, punctis 

 paucis ampliatis, parte declivi dilutiore ; femoribus infra dente 

 parvulo iastructis. Long. 4 lin. 

 Hah. Tainia. 



The elj^ra in this species, as well as in the two following, 

 are a little produced at the apex ; and this being rounded gives, 

 in conjunction with the abruptly terminating sides, a trilobed 

 character to their posterior portion. 



Tychanus ferrugatus. 



T. perbrevis, fuscus, griseo ferrugineoque squamosus ; rostro gracili, 

 baud arcuato, protborace breviore ; funiculo articulis duobua 

 basalibus baud elongatis ; protborace valde transverse, pone 

 apicem elevate, apice ipso valde constricto ; elytris subparallelis, 

 modice convexis, rugosis, postice declivibus, apicibus utrinque 

 caUosis ; femoribus infra dente detenninato armatis. Long. 3| Hn. 



Hah. Tairua. 



This and the preceding are very short thick-set species, 

 the former, inter alia., readily distinguished by its very convex 

 elytra. It is very likely that both have the transverse ridge, 

 formed by the sudden constriction of the anterior portion of 

 the prothorax, tufted as in the following species, but not 

 very marked in T. gihhus j probably a good deal depends 

 on age. 



