Sept.-Dec, I9i8.] SCHAEFFER : OsTOMID/E. 193 



than any of our other species. In the type specimen the intervals are 

 regularly uniseriately punctate ; however, in some of the few specimens 

 seen a few adventitious punctures are present, especially on the 

 second interval. The scutellum is more visible in this than in the 

 other species. As far as known it occurs only on pine. 



Corticotomus cylindricus var. texanus new variety. 



Form and size of cylindricus but color normally black or piceous and 

 intervals more or less distinctly uniseriately punctate. 



Brownsville, Texas. 



The intervals in this variety are clearer and generally more 

 sparsely and finely punctate than in typical cylindricus, though speci- 

 mens of the latter occur which approach the var. texamis in this 

 respect. The size is generally smaller and the form slightly narrower 

 than in cylindricus. 



Stenodema new genus. 



Head as wide as the prothorax, subconvex,. near apical margin 

 obliquely depressed; frontal margin trisinuate; eyes small, trans- 

 versely oval, distant from the apical margin of prothorax; antennae 

 eleven-jointed, reaching backwards a little below the apical margin of 

 prothorax, club three-jointed, ninth and tenth joints rather strongly 

 serrate, last joint much larger than the tenth, nearly quadrate and 

 with apex obliquely truncate; last joints of maxillary and labial palpi 

 subconical; submentum trisinuate. Prothorax convex, parallel sided; 

 apical margin feebly arcuate; apical angles obliterated; basal angles 

 rounded. Scutellum indistinct. Elytra as wide as the prothorax; 

 sides parallel ; surface punctured in irregular rows. Prosternum be- 

 hind coxae convex, arcuately declivous behind; metasternum convex 

 and slightly compressed at sides. Tibiae without spines on the outer 

 margin; tarsi slightly longer than the tibiae. 



Type — Stenodema kicoricc n. sp. 



Stenodema hicoriae new species. 



Cylindrical, convex, shining, color imiformly castaneous ; antenna;, palpi 

 and legs slightly paler. Head convex obliquely declivous a little before 

 apical margin ; moderately not closely punctate, the declivous apical part 

 rather coarsely striate. Prothorax apparently longer than wide, sides parallel, 

 surface rather sparsely punctate. Elytra cylindrical, sides parallel ; surface 

 punctured in irregular rows, punctures moderately coarse, finer towards apex; 



