LeConte.] 



TOMICINI. 363 



3. Margin of declivity with three prominent teeth 



each side 4. 



Margin of declivity with but two prominent teeth, 



the jwsterior longer, emarginate at tip 5. emarginatus. 



4. Cusps of the teeth, separate, acute 5. 



Anterior teeth united, front cusp rectangular 6. rectus. 



5. Elytral striae composed of larger more distant 



punctures 6. 



Elytral stride composed of smaller approximate 



punctures 7. pint. 



6. Interspaces with rows of distant punctures ex- 



tending nearly to the base 7. 



Interspaces with punctures only near the declivity 8. hudsonicus. 



7. Punctures of striae moderately distant 9. interruptus. 



" " more distant 10. tridens. 



8. Smaller, last tooth small, acute 11. avulsus. 



Last tooth long and slender, declivity more deeply 



concave 12. latidens 



9. Elytra more densely punctured, and scarce!}- in 

 rows, posterior declivity less concave, with the 



lower tooth long and prominent 13. concinnus. 



1. T. calligraphus Germ., Ins. Nov. 461 ; Bostrichiis exesus Say, 

 Journ. Ac. Nat. Sc v. 355 ; ed. Lee. ii., 317 ; Zimm., Trans. Ent. Soc. 

 1868, 147; ? Tomicus prcemorsuH Eichhoff, Berl. Ent. Zeitschr. 1867, 401, 



Atlantic region, as far west as New Mexico. The usual size is 5 mm. ; 

 .20 inch, but two specimens from the locality last mentioned measure 6.4 

 mm.; .25 inch. The sutures of the club resemble figure 1, Ferrari, p. 44, 

 and are quite like those of the European T. stenographus ; which differs 

 by its larger size, more coarsely punctured prothorax, and especially by 

 having but two teeth on the edge of the elytral declivity behind the most 

 prominent tooth. 



For the purpose of making the distinctions between the species mentioned 

 below more intelligible, I will describe the arrangement of the teeth in 

 this species, in which the number is greatest. The declivity is deeply con- 

 cave, polished, sparsely punctured, and the prolongation of tlie sutural 

 stria is well impressed. At the posterior end of the second interspace is ii 

 small cusp, and a similar one at the end of the third interspace ; these two 

 small cusps or denticles are not mentioned in the synoptic table given 

 above. At the end of the fourth interspace is a large conical tubercle, 

 which in this species is but slightly connected with the tubercle of the fifth 

 interspace, which is always the most prominent. Behind tliis prominent 

 one there are in the present species three acute equidistant teeth, and the 

 apical acutely elevated margin. The disappearance of some of these teeth 

 in the following species is produced by their absorption in the acute ter- 

 minal margin, which thus becomes longer, so that in T. pini it extendsi 

 around fully one-third of the declivity. 



