216 MR. WESTWOOD ON THE TEMEBRIONIDiE 



less punctated, the forehead without the impressed dot between the eyes, and the 

 tibiffi, especially in the hind feet, rather more serrated. These may possibly be sexual 

 distinctions. 



Species 4. Prioscelis (Iphius) crassicornis. 

 Tab. XIV. Fig. 7. 

 P. atra glabra, antennis longioribus crassioribus, femoribus omnibus ante apicem interne 

 bidentatis, tibiis compressis. 

 Long. Corp. Un. 13 ; capitis, 2 ; prothor. 2^ ; lat. 3^ ; elytr. long. 8^, lat. 4. 

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



This species has quite a different habit from the two preceding : the head in front is 

 thickly punctured, the hind part, on the contrary, is nearly smooth ; the clypeus is deeply 

 emarginate, and the margins of the head in front of the eyes very much elevated, 

 between which elevations is a curved transverse impression ; the mandibles have one 

 tooth rather beyond the middle and another minute one beneath the tip. The maxillary 

 palpi are strongly securiform ; the labium has a slight projection in the middle of the 

 anterior margin ; the palpi have the last joint subcylindric and scarcely thicker than the 

 preceding. The antennse are as long as the head and half of the prothorax, and gra- 

 dually dilated from the base to the tip, the basal joints being glabrous and subglobose, 

 whilst the 8th to the 10th are transverse and pubescent as well as the 11th, which is 

 ovate and pointed at the tip ; the prothorax is broader than long, the anterior angles 

 scarcely prominent, the sides slightly rounded, the edge being indistinctly crenulated 

 and marginated ; between the middle and hind margin are two deep punctures wide 

 apart. The elytra are wider than the prothorax, with the sides nearly parallel ; they are 

 more depressed than in the preceding, with nine slightly punctured striae on each, 

 which are effaced at a little distance before the apex. All the thighs are furnished near 

 the tip within with two short acute spines, the hinder margin being entire ; all the tibiae 

 are compressed, the front or upper surface being as broad throughout as the hind or 

 lower side ; they are nearly straight, and gradually become rather broader to the tip, 

 the outside of which is channeled for the tarsi ; the hind pair of tibiae are the broadest ; 

 these have the inner margin almost straight, but the outer margin is sinuated in the 

 middle, or in other words, the limb is dilated beyond the middle on the outer edge ; 

 the same character exists, but not so strongly, in the middle tibiae ; the under side of 

 the body is pitchy ; the abdomen does not present any peculiar character. 



P.S. — Mr. Hope possesses a specimen from Sierra Leone agreeing with mine in general 

 characters and in the curvature and toothing of the feet, but being 1| hne shorter, the 

 head rather narrower, the antennae rather shorter, with the terminal joints much nar- 

 rower. It is, I presume, of the opposite sex to the one described above. 



I 



