OF WASHINGTON, VOLUME XIV, 1912. 43 



In the young decayed branches of Clnsict rosca and Atro- 

 carpus. Guadeloupe, West Indies. 



From the description it seems somewhat allied to mcxicauus. 

 If this species is a true Lascouotns it is remarkable that it 

 should be found in the decaying branches and especially of 

 the above-named trees, both of which are non-coniferous. 



Lasconotus sulcifer Sharp. 1894, p. 464. 



I have not seen a specimen. I quote the following from 

 Dr. Sharp: 



Antennae with joints 3 to 8 quite small, the 3-jointed club large and 

 abrupt. Head deeply and broadly impressed. Thorax longer than 

 broad, finely margined at the sides, delicately punctate and pubescent, 

 with a broad depression along the middle, limited on each side by an 

 obtuse costa; these costse do not reach quite to the front margin, but 

 they are each surrounded at the end by a slight curvate elevation; 

 the extreme base of the thorax is strongly constricted, the true hind 

 angles being thus concealed. The elytra have the shoulders promi- 

 nent in front; they are broadly and deeply longitudinally depressed 

 along the middle; the suture is scarcely costate in front, but is dis- 

 tinctly so towards the apex; the first interstice is feebly costate, but 

 only on the basal portion; the third interstice limits the broad de- 

 pression and is strongly costate, and outside it there is also another 

 costa, strongly raised and extending from the base to the apex; the 

 intervals bear obscure serial punctures. 



Closely allied to L. pusillus Lee., but narrower, with the shoulders 

 more prominent anteriorly, the elytral depression much more marked, 

 and the costas more sharply elevated. We have received nearly 20 

 examples; they vary in color, some being brownish, but in other re- 

 spects are very constant. 



Guatemala, San Geronimo (Champion). 



BIBLIOGRAPHY. 



1845. ERICHSON, W. F. Naturgeschichte der Insecten Deutschlands, 



vol. in, p. 258. 



1859. LECONTE, J. L. Additions to the coleopterous fauna of North- 

 ern California and Oregon. Proc. Acad. Nat. Sci. Phila., 



vol. xi, p. 282. 

 1863. LECONTE, J. L. Smithsonian Misc. Coll. New Species of N. 



Am. Coleopt., Part I, p. 67. 

 1863. PASCOE, E. P. Notices of some new or little-known genera and 



species of Coleoptera. Journal of Entomology, vol. II, pp. 



33-34, pi. iii, fig. 4. 



1866. LECONTE, J. L. Additions to the coleopterous fauna of the 

 * United States, No. 1. Proc. Acad. Nat. Sci. Phila., xvm, 



p. 378. 



