Genera of the Cossonidce. 517 



wide geographical range, though it is perhaps more 

 strictly tropical than Pentarthrum. At any rate one of 

 the species now before me is from Cuba, and another was 

 captured by Mr. Wallace in Makian one of the islands 

 of the Malay archipelago. 



16. MiCROCOSSONUS (nov. gen.\ The minute Cossonid 

 (which was taken by Mr. Wallace at Saylee on the north- 

 west coast of New Guinea, and which has been communi- 

 cated by Mr. Pascoe) from which the characters for the 

 present genus have been drawn out, is manifestly a good 

 deal allied to Stenotrupis, with which it agrees in its 

 thickened, elongate, greatly exserted head, its narrow and 

 parallel outline, its depressed surface, and in the fact of its 

 legs being equally distant at their base. Nevertheless, if 

 the example before me may be taken as a type of its 

 group, the body is even still smaller than in Stenotrupis 

 (the entire length being scarcely one line), but relatively 

 not quite so slender ; its rostrum (which, as in most of the 

 members of that genus, is appreciably dilated towards the 

 apex) is much shorter and wider ; its eyes are considerably 

 more developed, and not so flattened ; its elytra are free 

 from minute pubescence at their apex ; its antennas are 

 inserted very much nearer to the base of the rostrum ; and 

 its coxa3 (although, as in that group, equally separated) 

 are distinctly more remote. Its general contour and 

 outline are somewhat that of an exceedingly diminutive, 

 flattened, and pallid Me site s ; but its 5-jointed funiculus 

 and the peculiar construction of its, rostrum, as well as its 

 numerous other features, entirely remove it from the sub- 

 family Cossonides. 



17. COSSONIDEUS (nov. gen.). In its comparatively 

 large and Cossonus-V^Q body (which is much depressed, 

 deeply sculptured, parallel-fusiform in outline, and of a 

 rather pale, though somewhat variegated, hue) the curious 

 insect for which this genus is proposed, and which is com- 

 municated by Mr. Pascoe as having been received from 

 Champion Bay in western Australia, seems altogether 

 anomalous amongst the Pentarthrides ; nevertheless its 5- 

 jointed funiculus, and the structure of its robust, parallel 

 rostrum are quite in accordance with the members of that 

 subfamily. Apart, however, from the characters just 

 enumerated, it may be known by its excessively large and 



