﻿— 200 — 



L. valida Lee, 1857, Ent. Rep. p. 64, t. 2, fig. 14. 



Length 22 mm.; .88 inch, //ai?'.— California, Nevada, Oregon, Vancouver. 

 The largest of our Leptura after gigas and emarginaia. 



L. mutabilis Newn., 1841, Ent. p. 71; Lee, J. A. P. ser. 2, i, p. 340; htridi- 

 pennis Hald., I. c. p. 63; Dej. Cat. 3 ed. 

 Length 8-13 mm.; .32 — .52 inch. //«<?>.— New Hampshire, Massachu- 

 setts, New Jersey, New York, Pennsylvania, Michigan, Canada. 

 The species with testaceous elytra were called by Haldeman 

 luridipennis, but a large series shows such gradations that it is in- 

 convenient to attempt any separation. 



L. quadricoUis Lee, 1850, J. A. P. ser. 2, i, p. 339. 



Length 8-9 mm. ; .32— .36 inch, //a^.— Massachusetts, Vermont. 

 Very rare, and doubtfully distinct from mutabilis. 



L. aspera Lee, 1873, S. M. C. No. 264, p. 228. 



Length 9 — 13 mm.; .36— .52 inch. //^<?(^.— Canada, Michigan, Colorado, 

 Idaho, Vancouver. 



L. CUbitaliS Lee, 1861, Proe Ac. Phil. p. 355. 

 Length 8 mm. ; .32 inch. Hab. — California. 



Association of Official Economic Entomologists. 



The second annual meeting of the Association of Official Eco- 

 nomic Entomologists will be held at the university buildings, Cham- 

 paign, 111., November nth to 15th, proximo, at the same time as 

 the meeting of the Association of Agricultural Colleges and Ex- 

 periment Stations. The committee on Entomology of the latter 

 association will meet at the same time. 



Members expecting to attend will confer a favor upon the offi- 

 cers if they will announce the fact, and will send titles of papers to 

 be be read, or topics they desire discussed, to the secretary. 



All are earnestly requested to be present if possible. 



John B. Smith, Secretary. 



A series of studies made upon the mouth parts of Diptera in- 

 dicate a homology different from any previously accepted. Thus 

 far I have examined a large number of families, and have succeeded 

 in distinguishing all parts of the labium, including the palpi, and all 

 parts of the maxilla. The labellae and the operculum are modifica- 

 tions of the galea. The slides are all made, the drawings are in an 

 advanced state of preparation, and the paper will be ready early in 

 October if all goes well. — ^J. B. S. 



