284 CURCULIONIDES. 



varieties in Missouri. Can this he C. aratus Germar ? His de- 

 scription does not altogether agree with my specimens. 

 [Also a Gonotrachdus. — Lec] 



3. C. FOVEOLATUS. — Black, with large, profound punctures ; 

 elytra with yellowish spots. 



Inhabits United States. 



Curculio foveolatus Knoch in Melsh. Catal. 



Body black, with dilated punctures ; head with dense, small 

 punctures ; a frontal indentation, and yellow spot ; rostrum ro- 

 bust, moderate, arquated, punctured like the head : antennas 

 jointed; first joint hardly reaching the eyes; thorax with three 

 small yellowish spots and one before ; elytra with regular series 

 of large quadrate punctures ; several small yellowish spots and a 

 large, irregular one behind : feet unarmed. 



Length less than one-fifth of an inch. 



This insect difiers so essentially from the characters of. this 

 genus as given by Schonherr that it may be separated under the 

 following name and characters : — 



Genus Ti/loderma. — Antennae rather short and robust, eleven- 

 jointed; rostrum moderate, rather robust, arquated ; pectus 

 grooved ; postpectus entire ; thorax lobed at the eyes ; tarsi 

 spongy beneath : elytra covering the tip of the abdomen. 



From Cryptorhynchus it is distinguished by the number of 

 joints in the antennse, and in this respect it agrees with Lyprus, 

 Tapinotus and Ulosomus Sch., but the former has the tarsi com- 

 pressed, and in Ulosomus the recipient groove is extended upon 

 the postpectus. I have not seen the insect which forms the 

 latter genus, but its characters seem to agree better with the 

 above described than any other. 



4. C. BisiGNATUS. — Elytra with an oblique whitish spot rather 

 before the middle. Blackish brown : body covered with small 

 scales, which are more erect on the thorax ; thorax extended on 

 the posterior middle at the scutel, and acute : elytra with about 

 four elevated lines and intermediate double series of punctures ; 

 an oblique, oval, whitish spot rather before the middle. 



Inhabits Indiana. 



Length less than three-twentieths of an inch. 



[C ohliquefasciatus Sch. is the same. — Leg.] 



