^04 



PSYCHE. 



[February tSqg, 



Platvpsylla-like irihect infesting rats in 

 Africa, and which had previously been 

 studied only from dried material. Saussure 

 in particular had published a long memoir 

 upon it, founding upon it a new order, 

 Diploglossata, from its possessing, as he 

 thought, a second labium. Hansen shows 

 that this does not exist (it is difficult to 



understand how the figures of Hansen and 

 Saussure can have been taken from the same 

 kind of iTisect) and he concludes that 

 " Hemimerus belongs to the Orthoptera, 

 con^tifuting a separate family very closely 

 allied to the Forficulina." He shows from 

 hi~ dissections that the insect is vivipa- 

 rous, bringing forth one voting at a time. 



THE SEVENTH VOLUME OF PSYCHE. 



Began in January, 1894, and continues through three years. The subscription 

 price (payable in advance) is $5.00 per volume, or $2.00 per year, postpaid. Tlie 

 numbers will be issued, as in Vol. 6, on the first day of every month and will con- 

 tain at least I2 pages each. No more than this was protnised for the sixth volutne 

 but the numbers have actually averaged more than 16 pages, and in addition 21 

 plates have been given and more than 50 other illustrations. We prefer to let 

 performance outrun promise, but when a larger subscription list warrants it, we 

 shall definitely increase the number of pages. 



Vols. 1-6, Complete, Unbound, - Now sold for $29.00. . 

 Vols. 1-6, and Subscription to Volume 7, - - $33.00. 



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