120 ^Ir. D. Sharps Coidrihutions to the 



impunctate. Thorax shinlni;- l)lack, distinctly shorter than 

 broad, coarsely ])unctured, ^vitll a broad, irrcgnlar, im- 

 punctate space along the middle. Elytra rather longer 

 than the thorax, l)Iac, Avitli ashy pubescence at the base 

 and extremity, rather coarsely punctured. Hind body 

 black, with the Gth and 7th segments bright reddish- 

 yellow; the anal styles arc yellow at the base, but their 

 a])ical half" is ([uite black; the segments are rather closely 

 punctured, and the 2nd and 3rd bear an ashy pubescence. 

 The legs, including the coxai, are black, with the tarsi 

 pitchy, but having the apical joint reddish. 



Para; a single female taken two or three years ago. 



Ohs. — This imiquc s])ecimcn, though in bad condition, 

 represents, I have no doubt, a distinct species, which will 

 be easily distinguished from /'. tricolor and P. fungi, by 

 the colour of the antenna,^ and the anal styles. Compared 

 with a female of P. tricolor it is seen that the antennae are 

 much shorter, that the thorax is shorter and more sinuate 

 at the sides, and more narrowed behind, and that the 

 elytra are shorter and more coarsely pmictured. 



5. Plociopterus dimidiatus, n. sp. Niger, nitidus, 

 abdomine antennarumque articulo ultimo rufo-testaceis; 

 elytris cyaneis, fasciis duabus ciucreo-pubescentibus. 

 Long. corp. 5^ Im. 



Mas : abdominis segmento 6° ventrali apice medio obso- 

 lete emarginato, 7° triangulariter incise. 



Antennas black, with the last joint yellow ; 3rd joint 

 not quite twice as long as the rather long 2nd joint, 4tli 

 about as long as 2nd, 5th long, but shorter than 4th ; last 

 joint long, rounded at the extremity. Head scarcely 

 broader than the thorax, shining black, with a very faint 

 bluish tinge ; the u])per side with coarse, irregular punc- 

 tures, those in the front very large, the disc free from p\mc- 

 turcs. Thorax much narrower than the elytra, about as long 

 as broad, slightly narrowed behind, and a little sinuate at 

 the sides, with coarse scattered punctures, which are neither 

 so numerous nor so coarse as in the other species here 

 described; a broad middle space free from punctui-es. 

 Hcutcllum dull, the lower half finely punctured, and with 

 a fine grey pubescence. Elytra blue, moderately closely 

 and moderately finely pimctured, Avith two bands of grev 

 pubescence. Hind body yellow, narrowed towards the 

 extremity ; 2nd segment almost impunctate, 3 — 6 sparingly 



