

COSSONTJS. 



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46. Cossonus ocularis, sp. n. (Tab. III. fig. 16, c? .) 



Elongate, rather convex, very shining, black, the base of the antennae and the tarsi ferruginous. Head 

 feebly, narrowly foveate and finely punctate between the very large, depressed eyes, the globose basal 

 portion smooth ; rostrum short, convex, rather stout, gradually widening to the transverse, sub- 

 quadrangular apical portion, sparsely, finely punctate ; antennse with a rather slender funiculus and a 

 large, ovate club. Prothorax nearly as long as broad, the sides parallel at the base and obliquely 

 converging anteriorly to the almost obsolete subapical constriction, the base deeply bisinuate ; the disc 



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with a subcarinate, irregularly biseriate-punctate, elongate-triangular depression, which becomes rugose 

 and deeper at the base, and is bordered externally by a broad polished space, the sides closely, moderately 

 coarsely punctate. Scutellum very small, transverse. Elytra considerably wider than the prothorax, 

 moderately long, parallel ; punctate-striate, the punctures not very closely placed and becoming much 

 finer towards the apex, the interstices smooth, flat, as broad as the striae. Metasternum and abdomen 

 very sparsely, finely punctate, the ventral segments 1 and 2 narrowly and deeply excavate down the 



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middle. 

 Length 4i, breadth U millira. ( J .) 



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Z7V 



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Eab. Mexico, Chilpancingo in Guerrero 4600 feet {E. E. Smith). 



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One specimen. A narrow, parallel-sided, somewhat convex form, approaching 

 C. foveatus, but with the rostrum shorter, the eyes larger, the prothorax more oblong, 

 not so coarsely punctate laterally, and with the basal depression shallower, &c. 



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47. Cossonus ligniperdus. (Tab. III. fig. 17.) 



Cossonus ligniperdus, Boh. in Schonh. Gen. Cure. iv. p. 1028 \ 











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Eab. Mexico {Edge, ex coll Solan), Orizaba {Mus. Chevrolat x ). 



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Larger and more elongate than C. exaratus ; the rostrum shorter and broader, 







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abruptly dilated at the apex, and closely punctate ; the frontal fovea deep ; the 





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prothorax coarsely, irregularly biseriato-foveate down the middle, the triangular 





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excavation carinate at the base, deep, and extending forwards to near the apex 



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with an almost smooth space on each side of the excavation ; the elytra 

 depressed on the disc and closely crenate-striate. We are indebted to Signor Solari 

 M a specimen nearly agreeing with the Orizaba type (fig. 17) communicated by 



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Sjostedt. 





__. Cossonus duplicatus, sp. n. (Tab. III. fig. 18, c? .) 



~~' "erately elongate, depressed, shining, black or piceous (immature), the base of the antennae and the tarsi 

 more or less ferruginous. Head longitudinally foveate and sparsely punctured between the eyes, the 

 globose basal portion smooth, the eyes rather prominent ; rostrum short, feebly, transversely, sub- 





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quadrangularly dilated at the apex, closely, finely punctate. Prothorax slightly broader than long, 

 moderately rounded at the sides, narrowed and constricted in front, somewhat feebly bisinuate at the base ; 







the disc with a shallow, triangular, subcarinate, irregularly biseriate-punctate depression extending along 

 the middle to the subapical transverse groove, the depression limited externally by a finely and sparsely 

 punctured (in one specimen almost polished) space, the punctuation becoming closer and much coarser 

 along the sides and flanks. Scutellum very small, transverse. Elytra a little wider than the prothorax, 





subparallel in their basal half ; closely punctate-striate, the interstices obsoletely uniseriate-punctate, 





flat, becoming feebly convex anteriorly. Beneath with a broad space down the middle finely and 

 sparsely, the sides and the prothorax more coarsely and closely, punctate; ventral segments 1 and 2 



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depressed down the centre in the S . 



Length 2|-3|, breadth g-1-^ millim. ( 6 2 .) 



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KK2 







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