July, '09] ENTOMOLOGICAL NEWS. 307 



broken ; but one insect, a duplicate moth, was loose in all of the 

 drawers. Despite the frequent handling and the 900 mile 

 ride to which the insects were subjected, the only signs to in- 

 dicate that the collection had ever been moved, were five or 

 six detached bodies and here and there a broken antenna. 

 Considering the number of specimens, at least 50,000, and the 

 age of some of them, the results certainly demonstrate the effi- 

 ciency of the above method of packing butterflies and moths 

 for shipment. 



An Illustrated Glossary of Chaetotaxy and Anatomi- 

 cal Terms Used in Describing Diptera. 



BY W. R. WALTON, Harrisburg, Pa. 



(Plates XIII, XIV, XV, XVI) 



These plates and the accompanying glossary are presented 

 by the author with the sincere hope that they may prove of 

 material assistance to workers in dipterology, especially begin- 

 ners, many of whom have, no doubt, been dismayed at the for- 

 midable array of technical terms which confront one who at- 

 tempts to make use of the writings of the various describers 

 for purposes of classification. 



Most of the older works on this subject are out of print and 

 inaccessible except to the lucky few ; others are scattered 

 through various volumes of periodical publications and are 

 troublesome to collate. 



Some of the more recent works on classification contain glos- 

 saries more or less complete, but none of them is fully illus- 

 trated. 



In treating a subject so dry and complicated as the one in 

 hand, too many illustrations cannot be used. The mind must 

 be afforded the opportunity of visualizing, else confusion is 

 sure to exist and a clear comprehension of the subject becomes 

 well nigh impossible. Then too, most of the plates hitherto in- 

 troduced are arranged upon the old plan of numbering or lejt- 

 tering the parts shown. Rarely the explanations regarding 

 the same are to be found on the same page with the illustra- 



