170 Mr. D. Sharp's Coittrlbutluns to the 



This species is in appearance exactly like the preceding 

 one, but differs by the abdominal characters of the male, 

 and also by those one or two ])oints, Avhich may perha])S 

 be indi\ idual rather than S2>^*ciiic. The antennfu have the 

 third joint a little longer, so that it is slightly longer than 

 the 2nd, and joints 4 — 11 are a little more dusky. The 

 elytra are rather more closely and finely punctured. 



In the male the middle part of the ventral plate is a 

 little produced backwards and has at its extremity a narrow- 

 but rather deep triangular notch. The head is broader 

 than the thorax. 



In the female the head is onlv as broad as the thorax, 

 and the front femora are unarmed. 



JEga ; two specimens, ^ , $ . 



Ohs. — Besides the specimens above described, there are 

 four others from Ega and Tapajos (one $ and three $ ), 

 about -which I cannot feel sure whether they belong to 

 P. cognatus or an extremely closely allied but distinct 

 species. 



8. Philonthus Traili, n. sp. Rufo-testaceus, nitidus, 

 antennis (basi excepto) abdomineque ante apicem nlgri- 

 cantibus, capite a^neo; prothorace serie dorsali 5-punc- 

 tato ; elytris sat fortiter punctatis. Long. corp. Sg lin. 



JNIas : fere sine notis sexualibus externis. 



Antenn;e moderately long, with the three basal joints 

 yellow, the rest black : they are slightly thickened towards 

 the extremity ; the 4th joint is a little longer than broad, 

 the 10th hardly so long as broad. ^Mandibles and palpi 

 yellow. Head brassy, rather broader than the thorax, 

 with a deep impression on the middle in front, and two 

 punctures on each side between the eyes, with a few other 

 ])iinctures behind these, and some at the vertex on each 

 side ; the middle part smooth and shining. Thorax yellow, 

 a good deal narrower than the elytra, longer than broad, a 

 little narrowed l)ehind, with a series of five coarse ])une- 

 turcs on ('ach side the midille, and outside this on each side 

 uith about six other coarse punctures. Scutellum rather 

 large, concolorous with elytra, distinctly punctured, lilytra 

 of a tawTiy-yeHow colour, scarcely longer than the thorax, 

 lather dci-ply and distinctly but not coarst-ly nor closely 

 punctured, shining, very finely and scantily pubescent. 

 Jlind body yellow, with the 5th segment black, exce])t at 

 the extreme base; the Gth liiack, with the extremitv yellow, 



