LeCoiite.] 



CKYPTORHYNCHINI. 257 



A. Pubescence long, not mixed with scales: 



Tibiae very coarsely toothed 1. serripes. 



B. Pubescence shorter: tibise feebly toothed: 



Pubescence erect, intermixed with large scales. . 2. squamigera. 

 Pubescence prostrate, squamiform 3. irrorata. 



1. Z. serripes, n. sp. 



Oblong oval, black, clothed with coarse, erect, brown hairs; beak densely 

 punctured, substriate near the base, frontal puncture distinct; head punc- 

 tured. Prothorax wider than long, narrowed in front from the middle, 

 rounded on the sides, scarcely constricted at tip, whicli is nearly truncate, 

 postocular lobes feeble; disc densely and coarsely punctured, obsoletely 

 carinate. Scutellum verj^ small. Elytra but little wider than the protho- 

 rax, truncate at base, rounded behind the humeri, which are closely ap- 

 plied to the base of the prothorax; stride deep, coarsely and distinctly punc- 

 tured, interspaces narrow convex, sparsel}' punctured. Beneath coarsely 

 punctured, tibiae with a fringe of marginal bristles, and 5-7 large, promi- 

 nent teeth; front tibife obtusely bidentate near the tip; apical hook distinct. 

 Length 6 mm. ; .23 inch. 



Cape San Lucas, Lower California; Mr. Xantus. The pubescence is very 

 like that of Oymnetron teter, but rather coarser. The funicle of the an- 

 tennae is slender; joints 1-2 equal in length, club small, oval-acuminate 

 and annulated. 



2. Z. squamigera, n. sp. 



Larger and of the same form as the preceding, with the punctures coarser; 

 the pubescence shorter, and intermixed with oval yellowish scales. Beak 

 densely punctured, not striate at base. Prothorax more rounded on the. 

 sides, slightly narrowed behind the middle, finely carinate; elytra with the 

 interspaces slightly carinate. Tibiis finely serrate. Length 7.7 mm. ; .30 

 inch . 



One male. Cape San Lucas; Mr. Xantus. The funicle of the antennae is 

 slender, the club elongate, scarcely annulated; this form of club is proba- 

 bly a sexual character. 



3. Z. irrorata, n. sp. 



Elongate, black, pubescence fine, sparse, prostrate, subsquamiform and 

 collected in spots on the elytra. Beak densely punctured, substriate at base, 

 frontal puncture distinct, head punctured. Prothorax not wider than long, 

 sides parallel behind, rounded and obliquely narrowed before the middle, 

 scarcely constricted at tip, densely and coarsely punctured, with aver}' nar- 

 row, smooth dorsal line. Elytra but little wider than the prothorax, 

 rounded just behind the humeri, then nearly parallel on the sides; striae 

 composed of large approximate quadrate punctures, interspaces narrow, 

 punctured. Thighs armed with a small tooth; middle and hind tibiae feebly 

 serrate, obtusely bidentate near the tip. Body beneath coarsely punctured, 

 sparsely clothed with pale brown scale-like hairs. Length ."";-(>. 5 mm.; 

 .20-. 25 inch. 



PKOC. AMER. PHILOS. SOC. XV. 96. 2g 



