50 J. L. LECONTE, M. D. 



Heafl very sparsely jmn^'tui'^^fl ; prothorax strongly punctured, much more 

 deeply excavated at the middle, excavation blackish, convexities elongate, 

 acute, region of hind angles also deeply excavated ; antennae with second, 

 third and fourth joints nearly equal ; 'J) 9 • Length 6 mm. ; Cnl., San 

 Francisco; Nev., (Horn) ?>(i. cavicollis Lee. 



Group 2. — TelepJiori. 

 I find no reason for changing tlie table of genera previously given by 

 me,* except to suppress Rhaf/07ii/cha, which seems an unnecessary dis- 

 integration of Telephorus ; our genera will then be as follows : 



Last joint of maxillary palpi dilated, securiform 2. 



Last joint of maxillary palpi suboval, obliquely truncate 4. 



Hind angles of prothorax rounded ?>. 



Hind angles of prothorax ( 'J, ) incised ; head short SILIS. 



3. — Head moderately long, sides of prothorax not incised TELEPHORUS. 



Head short and broad, sides of prothorax ( % ) nicked at the middle. 



POLEMIUS. 

 4. — Sides of prothorax ( % ) incised at the middle and behind, antennre ( % ) strongly 



serrate DITEMNUS. 



One species of the last named genus has recently occurred in Cali- 

 fornia ; with the exception of Folemkis, they are therefore represented 

 on both sides of the continent. 



TKI.EPIIORII.S lM4,.er. 



The numerous spi^cies of this giMiiis prestait at times sexual differences 

 in the form of the prothorax and the tarsal claws, which render the 

 distinction of species somewhat uncertain. They are likewise of variable 

 color and soft texture, so that in dried specimens the form cannot be 

 ac-curati'ly defined. The present table may th.-refore be considered, while 

 an improvement upon the crude work of my first synopsis,"}" only as a 

 guide to observations in which by a good series of specimens being 

 collected from the same locality and tree, the limits of variation may 

 be more accurately determined. 



The s]>ecies in our fauna may be divided into the following groups: 



€laws similar, all being toothed or cleft 2. 



Claws dissimilar, some being usually sim])le .3. 



Claws simple or slightly broader at base 4. 



2. — All the claws appendiculate or broadly tootlied A. 



All the claws cleft or acutely toothed .'. B. 



;^.— Claws of front tarsi cleft, of middle and hind tarsi broadly fnotliod C. 



Anterior chiw of ;ill tlio tarsi toothed at base, entire at tip D. 



Anterior cLiw of all the t;irsi toothed at base, cleft at tij), elytra s])arsely 



tubcrinilate E. 



4. — Elytra tulwirculate as in E F. 



Elytm finely scabrous , .G. 



» Classi'ftcntion, ISii. f Proc Acad. Nat. Sci. 1S.")1 . S39. 



