1874.1 209 



OdONTOCHETLA NICARAOTTENSia, f;p. U. 



O. Cnyennensi forma similis, at pedihus posficis multo gracilioribus, 

 ahdomineque (tit corptis suhtus totum) nirjro-cyaneo. Supra ohscure cuprea ; 

 lahro et palpis nigris, illo macula Interali rufiscenfi ; ontennis hasi 

 cyaneo-nigris ; pedihus saturate viridl-ceneis, femorihus piceo-violaceis, 

 troclianterihus posficis nigro-ceneis ; thorace cyUndrico, angustiori, suh- 

 grosse transversim strigoso, ciiprescenti ; eh/tris snh-grosse creherrime 

 puncfatis, ohscure cupreis, laterihus cyaneis et auratis Iceviorihus, gtifta 

 alba mediana solhm distincta. Long. 7t Hn- ? • 



In size and general form, aa also in tlie evenly convex, coarsely 

 punctured elytra, resembles the O. Cayennensis group ; from whicli it 

 differs in the slender posterior legs (especially tibiae), the black 

 abdomen, and wholly metallic legs. 



Chontales, Nicaragua; one example (Mr. Thos. Belt). 



Therates Eriknts, sp. n. 



T. Batesii (Thoms.) similJimus ; at multo major, elytrisque apice 

 simiato-truncatis, suturd longe productd. Supra capite tlioraceque ceneis 

 politis, elytris castaneo-rufis plaqa magna mediana nigra, tuhere trans- 

 verso palHdo includenti, apiceque pallide-testaceo ; lahro ( $ ) antice 

 lato, octo-dentato. Long. 5 lin. ? . 



The labrum (?) differs from that of T. Batesii in being 

 broader on the fore margin and having eight teeth, T. Batesii having 

 only seven teeth. The teeth differ somewhat in form, the exterior 

 one on each side of the front row of six being longer and sharper 

 than the intermediate four ; whereas in T. Batesii the five anterior 

 teeth are quite uniform. The large marginal tooth is also more acute 

 and more separated from the body of the labrum. The elytra have the 

 same configuration of surface, lax'ge tubercular elevations at the base, 

 followed by a depression, and then by a transverse, rather oblique, 

 pale swelling ; but the apex is entirely different, being sharply sinuate- 

 truncate (emarginate) on each side, with the suture prolonged into a 

 long, strong tooth. The legs are testaceous-tawny, the al)domcn a 

 little darker, the whole under-side of head and thorax black. The 

 head and thorax are glossy aeneous, not cyancous. 



Northern Borneo ; three examples ; ? . 



Bartholomew Road, Kentish Town, N.W. : 

 March, 1874. 



