116 jNIr. D. Sharp's Contrihiitions to the 



INIas : abdomine scgmcnto sexto ventral i apice levlter 

 emarginato, scgmento 7° medio triangtilanter exciso. 



Antenna^ ratlier sliort, a little thickened towards the 

 extremity ; ord joint scarce!}' so long as the 2nd, 6th 

 about as long as broad, 7 — 10 transA'erse, 11th pointed. 

 Palpi and parts of the month pitchy yello\\-. Head 

 broader than the thorax, its u])per surfiice greenish-brassy, 

 ■with the hinder part tawny, the punctuation of the me- 

 tallic part very dense, and finer than in the other species 

 here described; the tawny part much more sparingly 

 punctured. Thorax about as long as broad, slightly 

 sinuate at the sides, and with the front part a little 

 broader; its upper surface very coarsely, and, Avith the ex- 

 ception of the usual smooth spaces, rather closely punc- 

 tured. Elytra coarsely and moderately closely punctured, 

 like the thorax of a tawny colour. Hind body narrowed 

 toAvards the extremity, black, A^ith the 7th segment and 

 hind part of the 6th yellow ; 2nd segment impunctate, 

 3 — 6 rather sparingly punctured, 3 — 5 Avith a yellow 

 pubescence at the side parts. Legs yelloAv, Avith the 

 femora infuscate ; the sternum pitchy. 



In the male the hind body beneath has the 6th segment 

 a little emarginate at the extremity, and the 7th segment 

 has a rather deep and narroAV triangular notch. 



Ega ; one specimen ( <J ). 



PLOCIOrTERUS. 



This genus consists of six desciibed species, and I here 

 characterize ten ncAv ones. The five species knoAvn to 

 Erichson AA-ere described by him under the generic name 

 of Staph >/Ii/tns, and it is to Kraatz that Ave are indebted 

 for the name and some of the characters of the genus ; 

 these insects are undoubtedly most allied to JJrac/tt/dinis, 

 but the structure of the antennas and front feet seem to 

 afford satisfactory points of distinction. 



The species are confined to tropical America, and those 

 I possess are easily referable to tAvo sections, in one of 

 Avhich the front tarsi and tibiae are simple in each sex, 

 while in the other section they are more or less dilated, at 

 any rate in the males, and the hinder face of the front 

 til)i:e is cut aAvay in a jjcculiar manner near the extremity. 

 Three of the species here described Avere indicated as being 

 captured in fungus, Avhich, hoAvever, they probably fre° 

 quent for predaceous purposes. 



