PTEROSTICHIN^: 321 



7 Head very large, tumid behind the eyes, which are not prominent; 

 body elongate and subcylindric, shining, the elytral striae regular, 

 rather deep, the scutellar usually well developed; abdomen impressed 

 at apex in the male. Atlantic regions. [Type Pt. rostratus Newm.] 



Cylindrocharis nov. 



Head moderate to rather large, never very small and always with prom- 

 inent eyes, seldom with any pronounced tumidity behind the eyes, 

 this being evident however in such forms as tarsalis and liercnlaneus; 

 palpi slender; body never very small or subcylindric, though parallel 

 and flattened in many species; elytral striae fine to deep, regular; 

 lustre shining, sometimes opaque as in menetriesi; abdomen not 

 apically modified in the male, except in custaneus. Species extremely 

 abundant west of the Rocky Mountains, very few in number in 

 the Atlantic regions. [Type Feronia valida Dej.] Pterostichus Auct. 

 Amer Hypherpes Chd. 



Head rather small and elongate, the eyes scarcely prominent, the palpi 

 slender; body small, parallel or subcylindric; elytral striae deep, 

 regular, complete and usually impunctate; abdomen not modified 

 at tip in the male. Pacific coast. [Type Per. angusta Dej.] 



Leptoferonia nov. 



8 Elytra very constantly with a single dorsal puncture, excepting in an 

 aberrant section of Eumolops, having subopaque integuments, where 

 there are three small punctures on each elytron 9 



Elytra with two dorsal punctures, sometimes accidentally with three on 

 one or both elytra; body elongate, neither parallel nor notably ven- 

 tricose, shining in both sexes; elytral striae complete, deep, the scu- 

 tellar well developed 15 



Elytra with three dorsal punctures, four in Refonia and variable in Cry- 

 obius; genera rather widely isolated among themselves 16 



9 Elytral striae complete and well developed or at least evident through- 

 out 10 



Elytral striae in great part obliterated 14 



10 Prothorax constricted basally, the basal angles generally well de- 

 fined n 



Prothorax with the sides oblique basally, sometimes feebly and briefly 

 sinuate, the angles usually obtuse; scutellar stria obsolete 13 



II Head small; body small, ventricose; antennae and tarsi very slender; 

 abdomen not apically modified in the male. Atlantic regions. 

 [Type Per. honesta Say] Gastrellarius nov. 



Head well developed; body larger in size, sometimes very large; antennae 

 usually more or less thick 12 



12 Maxillary palpi slender, with the third and fourth joints subequal in 

 length, the fourth a little wider than the third and truncate; anten- . 

 nae filiform; body rather small in size, shining, rarely dull in the 

 female; thoracic base always narrower than the apex, the anterior 

 angles not deflexed and the foveae always bistriate; elytral striae 

 with true but small and often indistinct punctures. Atlantic regions 

 to southern Rocky Mountains. [Type Per. constricta Say] 



Anaferonia nov. 

 T. L. Casey, Mem. Col. VIII, Oct. 1918. 



