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



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

 derm. The latter are often denommated setulse. 



Tychanus. 

 Acalli vicinum, sed prothorace basi bisinuato, et scutello «^anifesto 

 Rostrum tenuatum. Antennce in medio rostri insert® Elytra 

 callosa, prothorace basi hand latiora. Femora mfra dentata. 

 It would, perhaps, be difficult to define Acalles 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 m facilitating 

 the systematic location of the numerous species, mostly small 

 and dull-coloured, which centre round Tragoj>us, from winch 

 Acalles itself is but little removed. 



Tychanus gibhus. 



T. breviusculus, fuscus, sat dense griseo-sqamosus ; rostro mo^ce 

 arcuato, prothorace vix breviore ; funiculo articuhs d-ob^^ ^asa- 

 libus elongatis ; prothorace utrinqne pone apicem fort iter calloso, 

 a7ce?pso constricto, etsupra bifascieula,to ; elytns apicem versus 

 g?adatim latioribus, fere a medio dechvibus, dorso elevato b - 

 fristato, lateribus fortiter carinatis, sulcato-punctatis piinctis 

 paucis ampliatis, parte declivi dUutiore; femoribus infra dente 

 parvulo instructis. Long. 4 lin. 

 Hab. Tairua. 

 The elytra in this species, as well as in the two following, 



are a little produced at the apex ; and this ^^e^"S.^;?^^^^/f j;Tf{ 



in conjunction with the abruptly terminating sides, a trilobed 



character to their posterior portion. 



Tychanus ferrugatus. 

 r nerbrevis fuscus, griseo ferrugineoque squamosus ; rostrO gracili, 

 haid I cuato prothorace breviore; funiculo articuhs duobus 

 Wibus baud elongatis ; protborace valde transverso pone 

 Sm elevato, apice%sovalde constrioto ; elytris subparallehs 

 Tdice convexk'rugoL, postice declivibus, ap-bus -trm^^^^ 

 caUosis ; femoribus infra dente detenninato armatis. Long. 6^ iin. 



Hah. Tairua. 



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

 the former, *n^6r «L, readily distinguished by its very convex 

 elvtra It is very likely that both have the transverse ridge 

 formed by the suLn constriction of the anterior portion of 

 the prothorax, tufted as in the following species but no 

 very marked 'in T gibhus', probably a good deal depends 



on aa:e. 



