334 NEW SPECIES OF AMYCTERIDJE, 



This species is even more like an Acantholophus than the last. 

 The spine on each side of the head between the eyes is long, as 

 in the last species, while the place of the spine in front of and 

 within it, is here occupied by a very minute tubercle. The apex 

 of the rostrum on each side is elevated into an acute tubercle. 

 There are two rows of dorsal tubercles on the thorax, the apical 

 tubercle of each projecting a little over the head. There are 

 three lateral tubercles. The elytra are roughly punctured, and 

 have two rows of tubercles, and one posthumeral tubercle on 

 each. The apex is dehiscent, and slightly mucronate, and the 

 sides are marked with narrow whitish vittae. 



Hyborhtnchus crassiusculus. 



Oblongo-ellipticus niger squamosus albido-variegatus, c^pite 

 transversim quadrituberculato tuberculis parvis antice 

 bituberculato tuberculis minutis, thorace subplano bifariam 

 subtuberculato lateribus dentato dente medio valido, elytris 

 ampliatis seriatim punctatis crebre granulatis granuhs 

 setigeris. 

 Long. 5| lin., lat. 2 lin. 

 Hab. King George's Sound. 

 There is in the general appearance of this insect some resem- 

 blance to the genus Gubicorhjnchus. There are four small i^ound 

 tubercles placed transversely across the forehead, with two 

 smaller ones in front. The thorax is somewhat flat, and is as 

 broad as long. The dorsal rows of tubercles are traceable, but 

 not prominent. The sides have one large tooth in the middle, 

 with a smaller one behind. The elytra are broader than the 

 thorax, somewhat flat on the back, and vertical behind. They 

 are punctured in striae, with the interstices close, and formed of 

 dense rows of large granules, each with a longish seta. The 

 whole body is thickly spotted with whitish scales, with rings of 

 the same on the thighs. 



Hyborhtnchus Mastersii. 

 Oblongo-ellipticus niger cinereo-squamosus, fi'onte bituberculata 

 tuberculis parvis inter oculos utrinque tuberculo obtuse 

 armata, thorace bifariam tuberculato tuberculis parvis 



