neio Species q/"Hi3tendje. 11 



approaches near the edge anteriorly and terminates poste- 

 riorly without joining the metasternal lateral stria ; the raeta- 

 sternum has a longitudinal median sulcus in the anterior area ; 

 tlie anterior tibiae are 4-dentate, intermediate and posterior 

 tibiee somewhat widen out gradually to the base. 



The tarsal grooves of this species are straight, and in tliis 

 respect agree with those of Platysoma exortivum, Lew. The 

 last Schmidt considers belongs to the genus Phelister ; so 

 until a new genus is established I follow his views. 



Both species are at present unique in my collection. 



IJah. Tam worth, New South Wales (Lea, 1247). 



Pachycrcerus cceruleatus, sp. n. 



Ovalis, supra parum convexus, cferuleo-metallicus ; antennis pedi- 

 busque rufo-brunneis ; clypeo impresso a fronte distincto, stria 

 integra valida ; pronoto lateribus fortius punctato, stria margin all 

 actice interrupta ; elytris striis 1-4, suturali, et humeralibus 

 integris, 5 dimidiata ; prosterno bistriato ; mesosterno antice 

 marginato ; propvgidio pvgidioque punctatis. 



L. 4 mill. 



The species is the same size and shape as P. cyaneus, Er., 

 and is very similar in sculpture. It differs in the forehead 

 being clearly punctulate, the fourth, sutural, and two humeral 

 strise are complete (although the sutural stria is somewhat 

 fine and vague at the base), the apices of the elytra are trans- 

 versely punctured, and the prosternal keel is rather narrower. 



Hab. Matadi, Congo River {J. A. Clark). Two examples 

 were captured amongst many dozens of P. cyaneus, Er. 



Pachycrcerus piiUus (Gerst.). 



riatyso?na puUu7n, Gerst. Archiv fiir Naturg. xxxiii. p. 31 (1867). 



This species closely resembles Pachycrcerus tenuistriatus, 

 Lew. 1 saw Gerstacker's type in Berlin, and I afterwards 

 sent my type of P. tenuistriatus to Herr Kolbe for comparison 

 with it, who has kindly sent me the following note about it: — 

 " P. tenuistriatus is larger, the elytra shorter, fourth stria 

 oblique, in puUus it is parallel to the third, the punctuation 

 is more dispersed on the elytra and occupies but an apical 

 quarter of them, in pullus it occupies half." 



Chalcukgus, Kolbe. 

 Chalcurgus, Kolbe, Deutsch-Ost-Afiika, iv. Col p. 100 (1S97). 

 I have seen the two species, C. cyaneus and C. minor, 



