THE CANADIAN ENTOMOLOGIST. 



■85 



The apparatus consists of a four-legged stool, in this case 2^/^ feet 

 high, with an opening in the top and a copying camera placed over the 

 hole. A pane of glass (C) is now placed on the upper or lower rounds 

 of the stool (A or B), according to the distance you wish your object to 

 be from the lens. The objects to be photographed are placed upon the 

 glass, and for a background a sheet of paper or other material is laid on 

 the floor (D) under the glass. In this case a white background is used 

 because the butterfly is principally of a dark colour. By a glance at 

 figure 1 1 you will see that the objectionable shadows are obliterated. 



In photographing pinned insects it is necessary to have some scheme 

 for holding them on the glass in the posi- 

 tion desired. This is easily done by 

 gluing a small piece of cork on the glass 

 surface in which to insert the pin holding 

 the insect. It is necessary to have the 

 cork small enough so that it does not 

 protrude beyond the specimen when 

 looked at through the camera. 



This device can be easily modified to 

 suit an ordinary view camera by simply 

 adding a piece of board to the top of the 

 stool and letting it extend in a perpendic- 

 ular manner similar to E in figure to. By 

 having a hole in this board one can fasten a camera in place with a thumb- 

 screw, precisely as it is fastened to a tripod, with the exception that the 



lens is directed downward. 



W. Earl Rumsev, 



Asst. Entomologist. 



West Virginia Agr. Expt. Station, Morgantown, West Va. 



Fig. II. 



A NEW TYPHLOPSYLLA FROM MEXICO. 



BY CARL F. BAKER, FORT COLLINS, COL. 



Belonging to that group of the genus having head combs arising in 

 front of the antennal grooves in a line nearly perpendicular to the long 

 axis of the head, instead of along the lower margins of the cheeks, and 

 which includes the two species ^'■r«^///.f a.ndfraterna. 



Typhlopsylla mexicana, n. sp. — Female. In form resembling T. 

 musculi. Head rather strongly pointed, face receding. Bristles on head 

 numerous, strong and spine-like, one on either side of extreme tip, short 



