148 Mr. F. P. Pascoe on neiv Genera and Species of 



with the disk forming a prominent line, especially anteriorly ; 

 body beneath more or less finely corrugated. Length 8 lines*. 



Peomethis. 

 Subfamily Tenebmionin^e. 



Caput exsertum, pone oculos collo cylindrico contractura. 

 Prothorax angulis anticis productis, rotundatis ; niarginibus integris. 

 Tibice hand calcaratse ; tarsi postici validi, breviuseuli. 



The type of this genus is " Upis {IpMhimus) angulatus"~EiX. J [ y 

 a species remarkable for the bearded mentum of its males — a 

 peculiarity which does not appear to be anything more than 

 specific. This genus is differentiated both from Upis and 

 Iphthimus by the form of its prothorax, and its entire margins 

 when compared with the latter, — to which, as a secondary cha- 

 racter, may be added the sculpture of its elytra. The first of 

 the two species described below has been long known in col- 

 lections ; and in my own it formerly stood as a Baryscelis, an 

 unpublished name of Dr. Boisduval. Iphthimus ra'^er, Blessig, 

 appears to be in some respects intermediate between the two 

 following. 



Prometh is lethalis. 



P. nigra, subnitida ; protborace basi angustiore ; elytris postice la- 

 tioribus, fortiter punctato-striatis, interstitiis convexis. 



Hab. Queensland. 



Black, shining ; head minutely punctured ; clypeus slightly 

 emarginate at the apex, separated from the front by a fine 

 transverse line bent downwards at the sides ; prothorax very 

 finely punctured, longer than in P. angidata, gradually nar- 

 rowing towards the base, strongly canaliculate on the" disk, 

 with two impressed spots on each side ; scutellum semicircular; 

 elytra much broader than the prothorax at the base, and gra- 

 dually widening posteriorly, rounding towards the apex, deeply 

 punctate-striate, the punctures indistinct, the intervals raised 

 and very convex ; beneath glossy black ; first three segments 



* Mr. F. Bates, as we have already noticed, having withdrawn several 

 species previously placed with Nyctobates, to form his two genera Hypaidax 

 and Chdeone, which he places in Ccelometopinse, it will be necessary to 

 constitute another for my N. feronioides. This genus, which I propose to 

 name Hydissus, differs essentially from both the above in having the 

 penultimate joint of all the tarsi subbilobed ; it has no grooves behind the 

 mentum ; and the epipleural line terminates at the shoulder, this raised 

 and strongly marked line, which in Hypaidax is continuous with the 

 basal, being interrupted, the basal line turning backwards and running 

 down for a short distance inside and parallel to the other. 



t Wiegmann's Archiv, 1842, i. p. 174. It is found in Victoria as well 

 as in Tasmania. 



