208 MR. WESTWOOD ON THE TENEBRIONID^ 



to agree with the African species, and especially in the form and size of the spots on the 

 second segment of the abdomen. As, however, the characters which separate the species 

 in this genus appear very slight, I think it not improbable that a minute comparison 

 would show some other distinction than that of size. I therefore, for the present, regard 

 Lamarck's insect as specifically distinct, both in size and locality, from those of the 

 African continent. 



Species 2. Chiroscelis digitata. 

 Tab. XIV. Fig. 1. 



The Tenebrio digitatus of Fabricius (Syst. Eleuth. i. p. 145) is however referable to 

 this genus, and it is surprising that its connexion therewith should have been overlooked 

 both by Schonherr and the French entomologists'. The habitat of this insect is Guinea, 

 and its description accords with specimens received from Sierra Leone by the Rev. F. W. 

 Hope, as well as with one communicated to him from Copenhagen (where Sehestedt's 

 cabinet is preserved in the Royal Museum) by M. Westermann. The following are the 

 dimensions of these specimens : — 



Length of the head 3 lines English. 



pronotum ... 4^ 



elytra 1 1 i 



18i Hues. 



The head is rather flat and uneven above. The labrum is not symmetrical, the left 

 side being rather more produced than the right. This, which is the case in three speci- 

 mens I have examined, is owing to the left mandible, which laps over the right-hand 

 one, and pushes the left angle of the labrum upwards and forwards. The mandibles are 

 different in form^ the right-hand one having a single incision within, near the tip, whilst 

 the left-hand one has a similar incision, as well as a strong tooth on the upper side near 

 the tip, below which is a very deep incision, the base being internally produced into an 

 acute angle ; the maxillae are terminated by a dilated lobe, which is thickly clothed with 

 long hairs ; the inner lobe is horny and bifid at the tip ; the stem of the maxillae is 

 externally dilated into a flattened angular projection beneath the insertion of the palpi, 

 of which the terminal joint is scarcely thicker than the preceding. The labial palpi, on 

 the contrary, have the last joint large and securiform. The mentum has its anterior 

 angles rather acute. The anterior angles of the clypeus are produced, forming a sinu- 

 ated emargination in which the labrum is fixed ; in the centre of this emargination are 

 two slightly raised projections ; behind this is a deep transverse impression, each end ter- 

 minating in a thickly punctured space which is advanced forward ; a similar punctured 

 space exists on each side of the eyes ; within and between this is a short, transverse, 



' It is probable that the doubtful reference made by himself of this insect to his Tenebrio fossor, Ent. Syst. 

 i. 112, may have led to this. The last-named insect, which was described from the Banksian cabinet as a 

 native of the Cape of Good Hope, is a Carabideous inse<;t of the genus Zabrits. 



