COLEOPTERA 487 



(23) Nesopeplus nigricans, sp. nov. 



A^. protinoidcs affinis, sed prothoracis lateribus magis conspicue explanatis, elytris 

 magis argute seriatim punctatis, feminae pygidio ad apicem angustiore, ac interdum 

 emarginato. Nigricans, protlioracis lateribus, antennis pedibusque fusco-testaceis, 

 nitidus, leviter aeneo-micans, subtiliter sed parum conspicue pubescens; prothorace 

 transverse, antrorsum angustato, lateribus rotundatis, angulis posterioribus parum argutis, 

 disco obsolete impresso, sat rare sed conspicue punctato. Long. corp. 2^ — 3 mm. ; lat. 

 corp. \^ — 1:1: mm. 



In this species the prothorax is slightly broader, more rounded at the sides, and 

 more closely punctured in the male than in the female. The punctures on the elytra 

 form definite lines, more definite in the female than in the male ; and distinguishing the 

 insect from the original type female of N . protinoides, in which the punctures are far 

 apart and the lines much less definite. 



The female pygidium is long and tapering, convex longitudinally ; apically narrow, 

 rounded, and sometimes with a central depression or emargination. This distinguishes 

 the species from N. protinoides. Male pygidium conspicuously emarginate, the tooth on 

 either side sharp; supplementary segment emarginate; last ventral segment with a 

 shallow emargination. Seven specimens. 



Hab. Hawaii. Kilauea (vii. 1S95, "o- 5^8); and one male from Kona, 3000 ft. 

 X. 1892 (no. 201, Perkins). H. S. 



(24) N^csopiplns cognaiits, sp. nov. 



N. koelensis similis, sed prothorace breviore, testaceo, posterius angustato, lateribus 

 ad angulos posteriores haud sinuatis, angulis posterioribus parum obtusis. Long, 

 corp. 2f — 3 mm. 



A certain number of specimens from the same localities as N. koelensis have the 

 prothorax short, somewhat light-coloured, with blunt hind-angles, and with sides slightly 

 rounded and not sinuate posteriorly. These specimens are thereby quite distinct from 

 N. koelensis. 



The secondary sexual characters appear to offer no important differences from those 

 oi N. koelensis. In the male the teeth on either side of the notch are somewhat thick 

 and blunt; the supplementary segment is conspicuously emarginate. In the female 

 pygidium the notch is either absent, or, when present, very slight. 



Thirty-one specimens. 



Hab. Lanai. Same dates and localities as A^. koelensis, q.v. (Perkins). H. S. 



F. H. III. 63 



