302 Mr. 1). SMrp's Contributions to the 



but much narrower than the elytra, a good deal hunger 

 tlian broad. Elytra distinctly louger than the thorax, 

 rather co.arsoly, closely and deeply punctured, marked each 

 with an indistinct fuscous spot on the middle, and witlx a 

 common onfe on the suture, towards the extremity. Ilind 

 body indistinctly and spai'ingly puncttn*cd, each segment 

 with a longitudinal fuscous mark on each side, close to the 

 margin, and the 0th with the base ti-ansversely marked 

 with the same colour. 



In the male the hind margin of the ventral plate of the 

 6th segment of the hind body is broadly but not deei)ly 

 emarginate; the 7th has a rather broad and moderately 

 deep subtriangular excision, the lower angles of which are 

 quite rounded. 



Tapajos ; a single male. 



Ohs. — This species appears at first sight to be very 

 closely allied to S. hidcns, but when examined is found to 

 be very distinct. *S'. hispinus is much broader, has the 

 teeth of the labrum more elongate, the lOtli joint of the 

 antennae stouter, and the notch of the 7th segment of hind 

 body very different in form. 



17. Snnius spinifer, n. sp. Elongatus, castaneus, 

 capite thoraceque plus minnsvc infuscatis, illo elougato, 

 labro spinis duabus elongatis armato ; elytris nitidulis, 

 fortiter punctatis, macula media fusca ; antennis tenuibus, 

 perelongatis. Long. corp. 3^ lin. 



Antennje very slender and elongate, nearly 1^ lin. in 

 length, quite filiform ; 3rd joint very elongate, about as 

 long as the basal joint; joints 4 — 10 differing from one 

 another only in those nearest the apex being a little shorter; 

 11th joint elongate, pointed, slightly stouter and but little 

 longer than lOth. Labrum large, in the middle with two 

 straight, slender, elongate spines, and angulate on each 

 side of these. INIandibles extremely elongate, toothed near 

 the base with tAvo teeth, of which the lower is very small. 

 Head very elongate, the eyes convex, placed rather nearer 

 to the antennae than to the vertex, the sides behind the 

 eyes narrowed in a gradual curve to the neck ; pitchy in 

 colour, with the usual Sunius sculpture, which is rather 

 coarse and conspicuous ; beneath with moderately coarse 

 impressed punctures. Thorax much narrower than the 

 elytra, longer than broad, transversely convex; the greatest 

 breadth in front of the middle, thence much narrowed 



