450 Mr. J. Scott on new Genera and Species 



down the middle ; posterior margin of the segments broadly 

 brown, outer angle black ; beneath testaceous or dusky testa- 

 ceous, outer angle black, marginal hairs long, yellowish. 



Length 5 lines. 



Smaller than N. cimi'coides, to which it is allied. It is, 

 however, much clearer- coloured than that species, and has 

 also the posterior margin of the abdominal segments broadly 

 brown, which, with the clavate streak on the head, is sufficient 

 to separate them. 



Family Belostomidae. 



Genus Appasus, Am. et Serv. 



Ajypasus Leioisi. 



Luteous, testaceous, or brownish. 



Head testaceous. Crown sometimes brownish. Eyes black. 



Thorax. — Pronotum testaceous or luteous in front; posteriorly 

 from the transverse channel frequently brown, and somewhat 

 thickly and irregularly punctui'ed ; disk towards the front 

 with a pale or dark brown triangular fovea on each side joined 

 to a > -shaped black line. Scutellum testaceous grey or 

 brownish, finely crenulate ; near the basal angles a more or 

 less distinct, somewhat triangular, pale spot ; towards the 

 apex generally a dark, somewhat heart-shaped j)atch ; apex 

 more or less clear browniish yellow. Elytra luteous or testa- 

 ceous yellow, crenulate punctate : claims^ disk more or less 

 fuscous ; inner and posterior margin and claval sutm-e testa- 

 ceous yellow : corium, disk more or less fuscous, base and 

 anterior margin broadly testaceous yellow ; inner posterior 

 angle with a triangular patch of short golden hairs : or the 

 entire clavus and corium brown, anterior margin of the latter 

 broadly paler. Membrane unicolorous. Sternum testaceous. 

 Legs testaceous or brownish yellow : thighs^ first pair some- 

 times brownish : tihia;^ second and third pairs sometimes 

 brownish. 



Abdomen beneath somewhat dusky testaceous. 



Length 8 lines. 



Family Nepidse. 



Genus Laccotrephes, Stal. 



Laccotrephes japonensis. 



Fuscous brown. Prosternum at the base and apex with a 

 tubercle. Abdomen above orange-red, with a broad black 

 streak down the back. 



Head: central keel granulated. 



