210 MR. WESTWOOD ON THE TENEBRIONID.-E 



regarding as sufficient to constitute a distinct species. Tiiehead, although marked with 

 the same impressions, has them much shallower, so that the head appears smoother. 

 The right mandibles have fewer teeth, and those they possess are smaller and more 

 obtuse, the tip itself being truncate or blunt. The maxillary palpi have the terminal 

 joint evidently much thicker than the preceding, and the last joint of the labial palpi is 

 ovate. In my specimen the front margin of the pronotum has no deep impressed punc- 

 ture in the middle, although the second joint of the abdomen is furnished with the two 

 spots indicating the female sex. Here, however, these spots are very small and round. 

 The anterior tibiae are bent more inwards, the four hind ones are straighter ; their tips, 

 on the other hand, especially in the middle feet, are more dilated. I have represented 

 the wing of this species in order to show the difference which exists between it and 

 Tenebrio in the position of the transverse vein at the end of the discoidal cell, and in the 

 large basal internal cell marked with a *. The short row of punctures on each side of 

 the scutellum is very distinct. 



Mr. Melly possesses a specimen from St. Andrew's in Africa, near the equator, which 

 is 13J lines long. It is of a dark castaneous colour with the legs darker, probably the 

 result of immaturity. I am not able to speak of the sex of this specimen, or the shape 

 of the abdominal spots, if a female, owing to the absence of Mr. Melly from this 



country. 



Species 4. Chiroscelis Passaloides. 



Tab. XIV. Fig. 3. 



Nigra nitida, vertice trituberculato, tibiis latissirnis plants, anticis serratis, posticis intus 



versus apicem dente armatis. 



Long. corp. lin. 19^— 20f. 



Hab. in Guinea. In mus. nostr. Comm. Dom. Raddon. 



The head is finely punctured, with the angles of the clypeus and the margins of the 

 head before the eyes elevated, the latter extending outwards beyond the eyes, near the 

 inner and anterior margins of each of which is a raised tubercle, in front of which runs 

 a transverse impressed line, and there is a larger tubercle between the eyes. The front 

 margin of the clypeus is slightly emarginate ; the labrum is subquadrate, with the anterior 

 margin produced in front and ciliated ; the mandibles are strong and curved, each ter- 

 minating in three teeth, the lateral ones being smallest ; they have also a strong trun- 

 cated tooth near the base, and are without any intermediate membranous space ; the 

 maxillae have the stipes dilated behind the base of the palpi ; the outer lobe is subarti- 

 culated, and not dilated at the extremity ; the inner lobe is terminated by a bifid 

 corneous point, and internally ciliated ; the maxillary palpi have the terminal joint 

 not thicker than the two preceding ones, and slightly bent outwards, with the tip 

 obliquely truncate ; the mentum has the sides dilated and rounded oft', without any an- 

 terior angles, and without the base being narrowed ; the labial palpi are slender and 

 short, with the last joint not enlarged. The antennae are very short, being only 2^ lines 



