296 Transactions. 



2nd and 4th nearly equal and elongate, 5-7 elongate and oviform, 8-10 

 broader tlian tlie preceding, the terminal conical, the last 4 distinctly 

 pubescent. Thorax cordiform, widest near the front, apex truncate, lateral 

 margins obsolete ; the surface distinctly, closely, and moderately finely 

 punctured, rather more finely near the base. Scutellum broad. Elytra 

 oblong, subparallel, curvedly narrowed posteriorly, slightly wider than 

 thorax at the base ; distinctly striate-punctate, their sculpture less distinct 

 behind, the punctation of the sutural region, near the base particularly, 

 irregular and closer. 



Underside fuscous, the sternum and basal ventral segment coarsely, the 

 remaining segments more finely, punctured, the terminal one fringed apically 

 with fine grey pubescence. 



Larger than S. hilunatus, with differently formed antennae, the head 

 and thorax relatively more finely punctured, &c. 



Length, \\ lines ; breadth, quite | line. 



Raoul Island. 



Several specimens brought by Mr. W. L. Wallace. 



Group Otiorhynchid^. 

 Rhyncogonus planidorsis, sp. nov. 



Subovate, opaque, piceo-rufous, covered with depressed circular scales 

 of a greyish colour. 



Rostrum not longer than the head, marked off by a curved linear im- 

 pression extending from the front of one eye to the other. Eyes obhquely 

 oval, convex and prominent, more distant from each other than they are 

 from the thorax. Scape stout, squamose, and bearing also erect greyish 

 setse like those of the funiculus, it reaches backwards to beyond the front 

 of the thorax ; 2nd joint of funiculus quite as long as the basal one, 3rd 

 longer than any of the following four, which are submoniliform ; club 

 quadri-articulate, oblong-oval. Thorax about as long as it is broad, its 

 sides rounded, narrower in front than behind, base and apex truncate, 

 distinctly punctate. Scutellum small. Elytra subcordate, of the same 

 \vidth as thorax at the base, widest before the middle, much narrowed and 

 declivous apically ; disc rather flat, the 5th and 6th interstices are gradually 

 and obtusely elevated from before the middle to the summit of the posterior 

 declivity ; they are regularly but not coarsely striate-punctate. 



Legs squamositate and setigerous. 



Underside punctate and squamose, and bearing also some fine setse. 

 Basal 2 ventral segments as long as the metasternum ; 3rd and 4th nearly 

 nude, short, with deep sutures ; 5th closely punctured. 



A rather small species, distinguished by the abbreviated rostrum and 

 the somewhat flattened cordiform hind-body. The scrobes are short and 

 deep, and quite open above. There are no ocular lobes. 



Length (rostrum included), 2^ lines ; breadth, 1^ lines. 



Raoul Island. 



One, captured by Mr. Wallace. 



Group Cryptorhynchid^. 

 Acalles metrosiderse, sp. nov. 



Convex, compact, subovate ; much, but not at all abruptly, narrowed 

 anteriorly ; opaque ; piceous, antennae rufescent ; densely covered with 

 depressed variegated squamse, and coarse erect greyish and slightly infuscate 



