344 Major T. Bronn on nexa 



lioweveT, are quite obsolete ; interstices slightly convex near 

 the suture, the third tripunctate, posterior plica only moderately 

 developed. There are two setigerous punctures on each side 

 of the middle, at the apex, o£ the terminal segment. 



With the exception of 0. laiipenm's this is the most dis- 

 tinctly sculptured of all the larger members of the genus : 

 that species, however, may be recognized at once by the 

 acutely projecting angles and punctate base of the thorax. 



(J . Length 2'^ ; breadth 1 J- lines. 



A single male, one of Commander J. J. Walker's numerous 

 discoveries whilst serving on board H.M.S. ' Ringarooma/ 



A second specimen has been labelled O. ovinotaim^ having 

 a large well-deiined oval impression on the middle of the 

 thorax, some fine transverse rugai near the base, and more 

 shallow and less laterally expanded basal fovese, &c. 



Group Anisodactylidae. 



AUocinopus ocularius, sp. n. 



ElongaiGy slightly convex, nitid, black ; mandibles piceo- 

 Tufous ; the legs, antennae, and palpi testaceous j the elytra! 

 margins, near apices, fusco-testaceons. 



Head (including the large rotundate and prominent eyes) 

 about as broad as the widest part of thorax, nearly as long as 

 that is, much contracted behind j it is smooth, with setigerous 

 punctures as in A. scuJpticoUis, but with six instead of four 

 on tlie labrum, the inter-antennal impressions not extending 

 backwards as far as the middle of the eyes. Thorax one- 

 fourth broader than long, widest just before the middle, 

 moderately rounded towards the front, considerably sinuously 

 narrowed backwards, posterior angles rectangular^ but not 

 acute ; base widely, but only slightly medially emarginatCy 

 apex incurved, lateral margins well developed; dorsal groove 

 well marked, but not attaining the base or apex -, basal fossa3 

 of moderate size, from the inner side of each of these to the 

 middle of each side the surface appears flattened or depressed 

 and^ as well as the middle, more or less finely punctate and 

 rugose. Elytra oblong, rather wider than thorax at base, a 

 good deal narrowed and slightly sinuate behind, apices 

 individually rounded and slightly dehiscent at the suture ; 

 with regular, well-marked, impunctate stride, between the 

 sutural and second stride there is a short oblique basal one, 

 bus forming an additional interstice there, the marginal 

 punctures become irregular behind. 



This interesting species, though similar to the typical one 



