236 CUKCULIONID^. [LeConte. 



large as in ConotracTielus, and the mesoslernum is protuberant and perpen- 

 dicular in front. 



1. M. cribratus, n. sp. 



Black-brown, shining, sparsely pubescent, mottled on the elytra with 

 small spots of fine gray hair, and towards the tip with patches of a brown 

 color. Beak rather stout, scarcely as long as the prothorax, deeply grooved 

 and punctured, head punctured. Prothorax as long as wide, rounded on 

 the sides, narrowed in front, and feebly constricted: cribrate with large 

 deep punctures ; with a small smooth callus at the middle. Elytra oval, 

 emarginate at base, about one third wider than the prothorax; humeri 

 rounded; sides slightly rounded, more obliquely towards the tip ; striae 

 composed of large deep punctures, becoming smaller towards the tip, where 

 the strife are somewhat impressed. Beneath strongly, not densely punc- 

 tured. Antennse brown, second joint of funicle nearly as long as the first; 

 thighs slender, sinuate beneath, not toothed; tibiae nearly straight, armed 

 with a terminal hook; claws small, divergent, simple. Length 3.2 mm.; 

 .13 inch. 



Capron, Florida; Messrs. Hubbard & Schwarz. 



RHYSSEMATUS Sch. 



Concerning this genus I have little to add to the excellent synoptic table 

 and remarks published by Dr. Horn, (Proc. Am. Phil. Soc. 1873, 463) 

 except that the diftereuces between it and Chalcodermus as stated by La- 

 cordaire are somewhat illusive; the corbels of the hind tibiae seem in some 

 specimens of R. Uneaticollis to be quite distinct. On the other hand, there 

 is a great difference in the form of the claws, which in Bhyssematus are 

 cleft as in Anthonomus, but in Chalcodermus are approximate and connate 

 at base, almost as in Smicronyx, &c. There is also an important difference 

 in the two outer striae of the elytra, which are separated by a costa in the 

 first, just as in Conotrachelus, but in the latter the outer striae consists of 

 only a few large punctures extending one-third the length from the base, 

 and the interspace is flat. 



In view of the importance of these characters it becomes necessary to 

 place Chalcodermus prtiinosus Boh., (Sch. Cure, viii, 2nd, 13) in this genus; 

 from the other species it is easily distinguished by the less rugose punctua- 

 tion of the prothorax. 



CHALCODERMUS Sch. 



The remarks of Dr. Horn upon the three species of this genus which re- 

 main after removing C. pruinosus leave nothing to be added. 



ZAGLYPTUS n. g. 



The two very small species which constitute this genus resemble in form 

 and coarseness of sculpture Bhyssematus, but differ essentially by the an- 

 tennae and tarsi. The prothorax is also more strongly sinuate, and much 

 more deeply margined at the base. The funiculus is rather short, with the 



