SCAPT01ENUS. 571 



examined — two males and a female from the Salle collection (the female being the 

 one described and figured by Chevrolat x ) and three males from M. Eene OberthuVs 

 collection. The males (one of which is labelled S. chevrolati in Chevrolat's handwriting) 

 differ from those of 8. chevrolati, Guer., as follows : — They are broader and more 

 robust ; the thorax is more transverse ; and the elytra are more gibbous at the base, 

 less elongate, distinctly narrowed behind, and more thickly punctured. The head is 

 black, the thorax and elytra are castaneous or fulvous-brown, the apical margin of the 

 latter being infuscate or black, the under surface and femora are luteous, and the tibiae 

 and tarsi are rufescent. The pilosity of the thorax is short and decumbent, and fulvous 

 in colour ; the breast is clothed with much longer fulvous hairs. S. guerini is also 

 broader and more robust than S. femoralis, and differently coloured above. In general 

 shape it is very like S. laticollis, from which it may be easily separated by the form of 

 the antennae, the insect in this respect agreeing with S. femoralis and its allies. The 

 female differs from the corresponding sex of S. chevrolati, Guer. (= femoralis, Chevr.), 

 in having the thorax and elytra and the dorsal segments of the abdomen much 

 more thickly punctured, and the elytra without well-defined sulci. A male from 

 M. Oberthiir's collection is figured. 



25. Scaptolenus signaticollis. (Tab. XXV. fig. 22, s .) 



<$ . Scaptolenus signaticollis, Chevr. Ann. Soc. Ent. Fr. 1874, pp. 509, 518 x . 

 Hah. Mexico [coll. Oberthilr, ex Chevrolat 1 & de Bonvouloir). 



There are two males of this species in M. Rene Oberthiir's collection — one, the type, 

 and one (labelled chevrolati, Guer.) from de Bonvouloir's collection. This last- 

 mentioned specimen has the thorax almost entirely rufo-fulvous. From S. chevrolati 

 the present species may be known by the much shorter and less parallel elytra, which 

 (when closed) are considerably narrowed behind, feebly sulcate, and thickly punctured, 

 with a few conspicuous coarse impressions towards the apex. The thorax is about 

 three-fifths broader than long, very little narrower than the elytra, dilated and rounded 

 at the sides anteriorly, with long divergent hind angles ; the basal median lobe is 

 longitudinally carinate. The antennae are moderately long. The maxillary palpi are 

 elongate, with the apical two joints equal in length. The mandibles are short. The 

 hairs on the head, thorax, and scutellar region are moderately long and fulvous in 

 colour ; the breast is densely clothed with long, similarly-coloured hairs. The type is 

 figured. 



26. Scaptolenus teapensis. (Tab. XXV. figg. 23, 23 a, 6 .) 



3 . Moderately elongate, narrow, subparallel, slightly attenuate behind, shining ; head black, the prothorax 

 rufo-castaneons, the elytra brown, indeterminately castaneous at the base and suffused with black at the 

 apex, the body beneath and the femora luteous, the antennas, tibiae, and tarsi reddish-brown, the 

 mandibles castaneous, black at the tip ; the bead, prothorax, and scitellar region clothed with short 



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