210 Mr. G. R. Waterhouse's Description of 



XXXII. Descrijjtion of a new Genus of Carahideous Insects. 

 By G. R. Waterhouse, Esq. 



[Read May, 1841.] 



The insect about to be described was sent me for this purpose by 

 A. Melly, Esq., who obtained it from the west coast of Africa, in 

 the Gambia district. As the specimen is unique I shall not have 

 it in my power to dissect the parts of the mouth, most of them 

 liowever are tolerably well displayed. 



The head is elongated, has an almost spherical neck behind, 

 being constricted close to the eyes, which are prominent ; the 

 upper surface in front of the eyes is flat, dilated immediately in 

 front of the eyes, so as to hide a part of the basal joint of the 

 antennee, which is placed in a deep socket, but is contracted again 

 anteriorly ; two grooves, each having two or three impressed points, 

 are observable between, and slightly in front of the eyes ; these 

 two grooves, which are rather deep, converge in front, where they 

 are joined by two slightly marked grooves which diverge anteriorly 

 and form the posterior boundary of the clypeus, which is broadest 

 behind, and has a distinct impressed point on each side ; the 

 anterior margin is indistinctly emarginated — in fact, nearly 

 straight ; the labrum is tolerably broad, but in anterio-posterior 

 extent it is very short ; it is rather deeply emarginated in front, 

 and the lateral projecting lobes are rounded, and each have a 

 largish puncture. The mandibles are long, tolerably stout, and 

 but slightly curved; they have each two, somewhat obtuse, teeth. 

 The mentum is broader than long, and emarginated in front ; the 

 labial palpi are large ; the basal joint is moderate, the second joint 

 is longer than the first, and the terminal joint is very large and 

 nearly in the form of an equilateral triangle. The maxillae appear 

 to be rather obtusely pointed, and have the usual series of spines 

 on the inner side ; the outer maxillary palpi have the basal joint 

 long, rather slender and somewhat curved ; the second is short, 

 and the terminal joint is the same triangular form as that of the 

 labial palpi, but not quite so large ; the internal maxillary palpi 

 (or galea) are slender, the terminal joint is somewhat curved and 

 rather long. The antennse are long, thick, and compressed ; the 

 basal joint is long and very stout; the second is moderate, but 

 shorter than the other joints ; the third joint is about equal in 

 length to tlie first ; the following joints are very nearly equal in 



