406 ENTOMOLOGICAL NEWS [Nov., 'lO 



cated by a row of dots on veins subterminal space as on primaries, but 

 less distinct. Body and legs silvery ashen, the latter heavily covered 

 in part with dark brown scales. Abdomen dusky at tip. 



Type. A perfect $ from Witch Creek, California, tak- 

 en II, 15, '09, by Mr. H. W. Marsden. Another $ in only 

 fair condition from the same locality has been in my pos- 

 session for several years, but too much rubbed to constitute a 

 type. This I have made a cotype. Both are in my collection. 



(To be continued) 



Collecting and Mounting Micro-Diptera. 



BY E. T. CRESSON, JR. 



In the little experience I have had in the collecting and 

 mounting of Micro-Diptera, methods have been developed 

 which I find very satisfactory and greatly enhance 

 the value of a collection of these small insects. Altho the 

 methods may not be new to many collectors, still there are 

 some to whom these notes will be of aid. The common ab- 

 sence of good series of Micro-Diptera in most collections 

 I have examined, is due no doubt to their small size, but es- 

 pecially to the fact that entirely different methods must be 

 employed, than are usual with the larger insects, in collecting 

 and mounting, to insure perfect specimens. This subject, I 

 will divide into two instalments, of which the first will be 

 upon collecting. My experience in this line has been done 

 mostly in quest of the members of the Acalyptrate family 

 Ephydridae, to which my remarks will pertain more especially, 

 and to those insects having similar habits and habitat ; but the 

 same methods may be used with the small insects of other 

 orders. 



It is at once seen that the net proper (cone) is simply a 

 large funnel with its small end projecting about one and a 

 half inches into the bag (pocket) ; out on the base or large end 

 of the cone is sewn a separate piece (band) which in case of 

 detachable rims, can be turned over and sewed permanently 

 as shown, or, for solid rims, if one wishes to have a detachable 



