302 ]\Ir. D. Sliarp's Contributions to the 



but much narrower than the elytra, a fjood deal Ioniser 

 than broad. Elytra distinctly longer than the thorax, 

 rather coarsely, closely and deeply punctured, marked each 

 with an indistinct fuscons spot on the middle, and with a 

 common one on the suture, towards the extremity. Iliud 

 body indistinctly and sparingly punctured, each segment 

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

 margin, and the 6th Avith the base ti-ansversely marked 

 Avith 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 dee])ly 

 emarginate; the 7th has a rather broad and moderately 

 deep subtriangnlar excision, the lower angles of which are 

 quite rounded. 



Tapajos ; a single male. 



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

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

 be very distinct. *.S'. hisj)inus is much broader, has the 

 teeth of the labrum more elongate, the 10th joint of the 

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

 body very diftereut in form. 



17. Sunius sinnifer, n. sp. Elongatus, castanens, 

 capite thoraceque plus minusve Infuscatis, illo elongato, 

 labro spinis duabus elongatis armato ; elytris nitidulis, 

 fortiter punctatis, macula media fusca ; antennis tenuibus, 

 perelongatis. Long. corp. 3^ lin. 



Antenna3 very slender and elongate, nearly H Hn. in 

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

 long as the basal joint; joints 4 — 10 dif!ering from one 

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

 1 1th joint elongate, pointed, slightly stouter and but little 

 longer than 10th. Labrum large, in the middle with two 

 straight, slender, elongate s])ines, and angulate on each 

 side of these. jNlandibles extirmely elongate, toothed near 

 the base with two teeth, of Avhich the lower is very small. 

 Head very elongate, the eyes convex, placed rather nearer 

 to the antenna* than to the vertex, the sides behind the 

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

 colour, Avith the usual Sunitis sculpture, Avhich is rather 

 coarse and conspicuous ; beneath Avitli moderately coarse 

 impressed ])unctiu-('s. Thorax much narroAver than the 

 elytra, longer than broad, transversely convex; the greatest 

 breadth in front of the middle, thence much narroAved 



