1873.] 433 [Horn 



joints 3-4-5 subequal gradually broader, club oval sligbtly flattened, pubes- 

 cent attip. Thorax longer tban wide. Scutellum invisible. Elytra elon- 

 gate oval, narrowed at base and apex. Anterior coxa? moderately distant, 

 middle nearly twice as widely separated, hind coxae very distant, inter- 

 coxal process short truncate in front. First ventral suture entirely oblit- 

 erated at middle. Tarsi moderately stout, slightly pubescent beneath, 

 the third joint feebly emarginate. Metasternum moderately long. 



The above characters will serve to distinguish this genus from any 

 other hitherto described. It is represented by one species. 



D. mimeticus, n. sp. 



Brownish or piceous, opaque. Rostrum three-fourths the length of 

 thorax, coarsely variolato-punctate. Thorax one- fourth longer than 

 wide, moderately convex, at anterior fourth constricted, sides moderately 

 arcuate, base as narrow as the constriction, surface densely variolato- 

 punctate. Elytra elongate oval, broader than the thorax, humeri broadly 

 rounded, sides moderately arcuate, at apical third gradually narrower to 

 tip ; surface broadly striate, stria? coarsely punctured, intervals narrow, 

 at summit with a series of moderately coarse, submuricate punctures. 

 Body beneath very coarsely but sparsely punctured, legs coarsely punc- 

 tured, and with a few short yellow hairs. Length .10 inch ; 2.5 mm. 



This insect closely resembles DryophtJtorus cortiealis, and might readily 

 be mistaken for it on a hasty examination. 



Two specimens collected at Key West, Florida, by Mr. Edward 

 Norton. 



WOLLASTONIA, n. g. 



Head stout, obconical. Eyes round, feebly convex, moderately coarsely 

 granulated. Rostrum slightly longer than the head, robust, sub-cylin- 

 drical, not arcuate. Scrobes commencing at middle, deep, rapidly 

 becoming inferior and distant from the eyes posteriorly. Antenna; 

 robust, scape short robust not longer than half the length of the re- 

 maining joints ; funicle five-jointed, first joint stout, longer than the 

 others, 2-5 sub-equal broader than long ; club round, sub-truncate at tip, 

 glabrous, pubescent at tip, composed almost entirely of the first joint. 

 Tlwax longer than wide, cylindrical, but slightly narrowed in front. 

 Scutellum small, rounded at tip. Elytra cylindrical very slightly broader 

 than the thorax. Legs shore, robust, tarsi nearly as long as the tibiae, 

 first and second joints slender, subequal third slightly broader but not 

 bilobed, fourth as long as the preceding together, slender. Anterior and 

 middle coxae feebly separated, hind coxa? distant, intercoxal process short, 

 sub-truncate in front. Metasternum moderately long. 



Closely allied to Pentarthrum, but differs by the position of the an- 

 tennal scrobes, and the more narrowly separated anterior and middle 

 coxae. In the present genus the scrobes pass entirely beneath the eyes, 

 and are distant from their lower edge. In Pentarthrum the scrobes attain 

 the eyes. 



A p. b. — VOL. xiii. 3c 



