On Aqitaiie Carnivorous Colenpiera or Dytiscidce. 573 



the disposition of the stii® on the elytra is much the same as in the C. punctulatus 

 (No. 831), the outer one being however ratlier shorter, but the present species is 

 much larger. 



He de France, (coll. Bouvoiiloir). T have some doubts whether this locality be correct. fi54. 



836. Copelatus coxalis, n. sp. — Oblongus, clongatus, angustulus, subparallelus, 

 piceus, prothoracis lateribus dilutioiibus, elytrorum basi, antennis pedibusque rufis ; 

 prothorace fere laevigato ; elytris striis quinque sat profundis, prima (a sutura baud 

 remota) quintaque posterius brevioribus, hoc basin baud attingente ; coxis poster- 

 ioribus profundius aciculatis; antennis elongatis. Long. G, lat. 2i m.m. 



This species is very distinct on account of the coarse sculpture of the coxte and 

 the fine stria' on each elvtron. J. have seen but a sin'^le female. 



8outh America, (Amazonia). 049. 



Group 3. (No. 837). 



Elytra without submarginal stria, but with six other striae on each. 

 A single species of short form is the only one known to me ; except for the absence 

 of the submarginal stria it completely resembles the species ot Group 10. 



837. Copelatus duodecemstriatus, Aube, M.C. — Oblongo-ovalis, angustulus, sat 

 depressus, piceus, capite et prothoracis elytrorumque lateribus dilatioribus, antennis 

 pedibusque rufis ; prothorace vix punctulato ; elytris striis sex profundis, suturali 

 anterius desinente, et 3', 5° que ad basin paulo abbreviatis. Long. 5, lat. 2^ m.m. 



This species is known to me only from tlie fragments of two specimens from 

 Dejean's collection. It bears much resemblance to Copelatus pusillus (No. 854), 

 but the striae of the elytra are deeper, and the marginal one is absent. I have 

 great doubts whether the specimen in Chevrolat's collection from Guadeloupe 

 (referred to by Aube, Spec. p. 378), is the same species, though it is certainly very 

 similar. 



He de France. 



Group 4. (Nos. 83S and 839). 



Elytra without submarginal stria, but with eight other stria3 on each wing-case. 

 The striae deficient are the internal ones, and of the eight present some are very 

 much abbreviated. 



4 K -t 



