THE GENUS DENDROCTONUS. 115 



distinctly constricted toward the head, with moderately long, erect 

 liairs on the lateral area, longer and denser on the anterior surface; 

 punctures of elytral striae distinct and coarse, the striae more dis- 

 tinctly impressed on the dorsal area. Secondary sexual characters 

 same as in preceding species. 



Type labeled '' Type No. 7440 U.S.N.M.," name label, "Hopk. 

 1 22/08, Pinus jeffreyi, Little Yosemite, Cal., H. E. Burke, col- 

 lector, ?, Hopk. U. S. 4394a." 



Male type: Length 7 mm., same characters as female, except ely- 

 tral declivity is more opaque and with distinctly coarser interspacial 

 rugosities. 



Male type labeled same as female, except sex label. 



]'(t rial-ions. The length varies from 6 to 8 mm., with the average 

 about 7 nun., and the color from brown in young specimens to deep 

 black when matured. The sculpture and vestiture of the epistoma, 

 front, pronotum, and elytra vary as usual. There is apparently less 

 variation in size and in other characters than is found among the 

 individuals of the other species. 



Distinctive characters. This species is at once distinguished from 

 either of the two preceding by its average larger size and shining pro- 

 notum, with its fine and shallow punctures. 



Note. This species is not represented in any of the collections 

 examined by the writer, and nothing has heretofore been published 

 about it. 



Pupa. In addition to the generic and divisional characters, the 

 apices of the front and middle femora are armed with two distinct 

 spines; abdominal tergites 2 to 6 with long and prominent pleural 

 spines; 1 is apparently without dorsal spines, 2 and 6 are evidently 

 with dorsal and lateral spines, but in the single poor specimen the 

 relative size and number can not be made out; they appear, how- 

 ever, to be less prominent than in either of the preceding species; 7 

 has two small dorsal, three distinct lateral spines, and a small pleural 

 one; 8 is smooth, and 9 is with prominent pleural spines, as usual. 

 Pupal type labeled "Hopk. U. S. No. 4412a." 



The above description is based on a single specimen, which is dam- 

 aged, therefore is subject to revision when more specimens are exam- 

 ined. It seems to be quite different from the unique pupa mentioned 

 under D. monticola. 



Larva. In addition to the generic, divisional, and subdivisional 

 characters, the front has the posterior angle subacute, and a narrow 

 transverse elevation situated in the middle and not broadened or 

 more elevated toward the sutures; clypeus shining, with median 

 groove toward the base and with the apex broadly emarginate ; labrum 

 with apex broadly truncate; sternellar lobes of the thoracic segments 



