new Species of Histeridse. 17-5 



The small stature and lightly impressed dorsal striaj sutfice 

 to distinguish this species from C. consors, Lee, to which it 

 is in many ways similar. 



Hab. Brownsville, Texas ( Wickham). 



Monoplius pinguis, Lewis. 



It is only recently I have seen the female of this species. 

 In well-developed specimens the female has an acute tooth 

 on the fourth abdominal segment and there is a strong denti- 

 form ridge on either side of the propygidium. In smaller 

 examples these characters are less observable. The apex of 

 the pygidium also has two blunt processes. Marseul only 

 knew the male of Monoplius injiatus when he described and 

 figured it ; the female has a less conspicuous ridge on the 

 propygidium, but the apex of the pygidium is of similar form 

 to that of M. pinguis. The two species of Monoplius known 

 occur in the mounds of stercoraceous and vegetal matter 

 brought out of the galleries by the workers of an underground 

 termite, Hodotermes Havilandi, Sh. In such places the 

 larva? as well as the imago have been found by Mr. L. Pe'rin- 

 guey. 



Pelorurus carinatus, sp. n. 



Ovalis, convexus, piceo-niger, parum nitidus ; capite lato punctu- 

 lato ; pronoto stria margiuali integra, sed antice leviter impressa ; 

 elytris multicarinatis ; pygidio cornpresso, in medio carinato ; 

 prosterno angustato, bi*triato ; mesosterno, stria margiuali obso- 

 leta, in medio stria arcuata perspicua ; tibiis anticis 10-12-den- 

 tatis, posticis multispinosis. 



L. 4i mill. 



Oval, convex, nearly black, somewhat shining; the head 

 widest anteriorly, epistoma also wide, surface punctulate, 

 stria well-marked over the eyes, not continued anteriorly; 

 the thorax punctured like the head, marginal stria complete, 

 but crenulate and feeble behind the head ; the elytra, humeral 

 and subhumeral striae cariniform and complete, dorsal stria 

 represented by 13 carinee, complete, between the sixth and 

 seventh carinas the interstice widens out at the base, along 

 the outer edge of the sutural carina there are irregular marks 

 which apparently represent an obsolete carina, the inter- 

 stices are punctured similarly to the thorax; the propygidium 

 and pygidium are also punctured in like manner, the latter is 

 compressed longitudinally, leaving the centre line carinate 

 especially near the apex ; the sternal plates are densely and 

 rugosely punctured ; the presternum narrow, the striae are close 



Ann. it Mag. X. Hist. Ser. 7. Vol. ii. 13 



