484 MR. H. w. BATES ON [Juiie 17, 



The mesosternal process is conical and obliquely inclined as in F. 

 impressa, but it is not so large as in that species. 



DiPLOGNATHA GAGATES, Fabr. 



Macroma congoensis, n. sp. 



M. sulcicolli (ScJiaum) siiniUima ; differt infer alia thoracis vitta 

 margitiali antice dilatata maculamqae nigrum iududente. 



Long. 17 millim. 



Shining black, legs and middle of the abdomen pitchy red ; fore- 

 head with a large triangular bright yellow spot, the base of ■which 

 is in front (leaving the clypeus black) and the apex prolonged to 

 the crown. The lateral marginal vitta is very broad in front and 

 tapers rapidly towards the hind angles ; the central yellow vitta is 

 ver}' narrow ; the scutellum has in the middle a triangular spot 

 variable in size, and the spot on the pygidium is broad and strongly 

 tridentate behind. On each side of the disk of the thorax there is 

 a large strongly-punctured area, and similar punctures are seen in 

 the dorsal depression, which does not, as in M. snlcicollis according 

 to Schaum's description, extend to the fore margin. The elytra are 

 strongly but not closely punctured, the punctures gradually changing 

 to transverse scratches near the sides and apex. Underneath, the 

 episterna, the metasternum, the anterior coxa;, and sides of the 

 abdominal segments and posterior coxte have each a large bright 

 yeUow spot. 



Family Prionibje. 



SoBARTTS POG'?ET, Harold, Col. Hefte, xvi. p. 165, tab. 2. fig. 2 ( c? ). 



Both Mr. Bonny and Mr. Jamesou obtained examples of this fine 

 species on the Aruwimi, where it appears to be not uncommon. 

 It is interesting as belonging to a group {PcecilosomimA the chief 

 members of which belong to Tropical America. Pogge obtained the 

 male only ; the female difi'ers in the much shorter antennte, only 

 two thirds the length of the body, the apical joints of which are 

 shortened and thickened, and in the smaller and narrower hexagonal 

 thorax with more prominent lateral spines. 



5 . Elonyato-oblongus, convexus, nigro-velutiniis, supra capite pos- 

 tice elgtrisque fasciis tribus roseo-ritjis, fascia prima {basali) 

 ancjusta, fascia fertia {apicaW) utrinque prope apicem nigro- 

 macidata ; abdomine metasternoque medio fulvo-testaceis. An- 

 tennoe 2^cmUo idtra medium elytrorum. extcnsce ; articulis granu- 

 latis, 3" et 4" Jiaud latioribus, Q^-ll™ ahbreviatis et incrassatis. 

 Thorax elytris multo angustior, hexagonus,margine laterali acuta 

 dentictdato, spina mediana valida acuta. 

 Long. 23-32 millim. 



Family Cerambtcid,^. 



Ploc(ederus ? 



A much-damaged example of a species allied to P; denticornis, F. 



