122 



forms, known by their softness and imperfect structure, while the former is a general 

 receptacle for all larval forms with a corneous abdomen. The first effort to decompose 

 this tribe has herein been made by joining the Oxytelini and Omalini with the Psela- 

 phi ; and in future memoirs T hope to point out how some other portions of the Brach- 

 elytra may be disposed of. 



Ceophyllus, (n. g.) 



Antennae approximate, 11 -articulate, moniliate, subfronte elevata in fovea inserts. 

 Palpi maxillares 4-articulati, articulis 3tio et 4to clavam transversam formautibus. 

 Mentum basi angustatum. Tarsi unguiculis binis equalibus. 



1. C. monilis. Long. .11. 



Specimen unicum ad fluminis St. Clair (Michigan) ripas, sub cortice Tilise Ame- 

 ricans, mense Augusto, inveni. 



Cedius, (n. g.) 



Antennae approximate, 11 -articulate, sensim incrassate, ad marginem frontis ele- 

 vate subtus inserts. Palpi maxillares 4-articulate, articulo 3lio cuneifonne extus 

 acuto, 4to majore convexo. Mentum quadratum. Tarsi unguiculis binis equalibus. 



1. C. Ziegleri. Long. .11. 



Hab. Pennsylvania sub cortice arborum. 



2. C. spinosus. Long. .07. 



Hab, in Carolina Australi, Columbie. 



Tmesiphorus, (n. g.) 



Antenne approximate, 11-articulate, sensim clavate, ad frontis elevate marginem 

 subtus inserts. Palpi maxillares 4-articulati, articulo 2ndo et 3tio extus appendicu- 

 lar, 4to triangulari emarginato. Mentum quadratum. Tarsi articulo 3tio quam 

 2ndo sesqui longiore, unguiculis binis equalibus. 



1. T. carinatus. Long. .08 — .10. 



Hab. sub cortice Pinuum et Quercum, minus frequens. Ohio, Alabama, Penn- 

 sylvania. Abundat in Georgia. 

 Pselaphus carinatus, Say, J. Ac. N. Sc. 4, 97. 

 Ctenistes? carinatus, Aube, An. Ent. 2, 100. 



2. T. costalis. Long. .11. 



Hab. Pennsylvania, sub cortice. 



Ctenistes, Reichenbach, Aube. 



1. C. piceus. Long. .08. 

 Hab. Vermont. 



2. C. Zimmermani. Long. .07. 

 Hab. Georgia et Louisiana. 



3. C. consobrinus. Long. .07. 



Specimen unicum masculinum ad Athenas Georgie inventum. 



