296 THE GENERA AND SPECIES OF AMTCTEEID^, 



Corpus subangustum, segmento ultimo ventrali masculi transver- 



sim leviter excavate. 

 Thorax, elytra, pedes, ^-c. ut in AcanthohpJw. 



The only species of this genus hitherto described H. ccenosus, 

 is placed by Mr. Waterhouse in a section of Acantholophus, which 

 he thus characterizes : " With simple tubercle over the eye, and 

 two approximated acute tubercles at base of rostrum." The ros- 

 trum may, I think however, be better described as having the 

 lateral mai'gius not elevated behind, while an inner ridge on each 

 side is considerably elevated, in some species even into an acute 

 tubercle. The head is rather convex, and very rugose, the 

 rugosities forming, in some species, four tubercles placed trans- 

 versely, one on the inner side of each eye, the others near the 

 middle, and sometimes rather behind the two first. The species 

 generally present a considerable resemblance to Acantholophus ; 

 they are however for the most part rather, and in one species, 

 H. rugosus, much narrower. The antennae are slight. 



All the species are from Western Au.stralia. 



1. — Hyborhtnchus furcatus. 



Oblongus niger, rostro basi bituberculato, fronte quadritubercu- 

 lata, thorace dorso bifariam tuberculato lateribus dentato, ely- 

 tris dorso rude seriatim striato-punctatis trifariam tubercu- 

 latis latei-ibus seriatim granulatis apice distanter mucronatis. 

 Mas : vittis subaureis et albidis omnino ornatus. 

 Femina : elytris vitta albida suturali postice furcata ornatis. 

 Long, c? 4 ? 5 lin., lat. ^ l^ ? 2^ lin. 

 Hab. King George's Sound. 

 The rostrum in this species is very distinctly crested behind. 

 The head is deeply rugose, and has four tubercles in a transverse 

 line between the eyes. The thorax has four tubercles along the 

 anterior margin, a row of tubercles on each side of the dorsal line, 

 and two tubercles on the sides. The elytra are roughly striato- 

 punctate, with three series of tubercles on each, the terminal 

 tubercle of each row only being large. The apex is remotely 

 mucronate. The male is little more than half the width of the 

 female, and is thickly covered all over with cinereous scales, with 

 many narrow vittas of white and golden yellow scales. 



