126 Mr. N. Ros6n—Eephj to Mr. G. A. BouJe7iger. 



EXPLANATION OF PLATE VL 



Fi(j. 1. Tortoise A, genitalia seen from ventral surface. Cloacal bladder 

 removed ventrally. Left Miillerian duct and epididymis 

 separated and slightly displaced to show iiidney dorsal to them. 

 Penis turned over dorsally to show groove. Nat. size. 



Fig, 2. Tortoise B, genitalia, ventral view. Round and broad ligaments 

 not shown (nor in fig. 1). Cloacal bladder cut away ventrally. 

 Nat. size. 



Fig. 3. Part of a longitudinal section of the left gonad of Tortoise A, 

 showing an Gg^ on the surface and the relative size of the semi- 

 niferous tubules of the rest of the gonad. X 12 diameters. 



Fig. 4. Part of a longitudinal section of the left gonad of Tortoise A, 

 showing developing follicle (with ovarian ovum) wedged in 

 between seminiferous tnbules. Shghtly diagrammatic, x 100 

 diameters. 



XIII. — Reply to Mr. G. A. Boulenger. 

 By Nils Rosen. 



To the "Remarks" which Mr. Boulenger in the March 

 number of these ' Annals ' has made upon mj paper on 

 snakes belonging to the Museums of Lund and Malmo, and 

 which at first sight may seem to many to have been totally 

 annihilating, I beg to give the following reply, which I hope 

 will fully convince all impartial readers of the groundlessness 

 of these " Remarks.'^ 



I will begin with Mr. Boulenger's statement that the snake 

 I have described as a new genus under the name of Anisodon 

 Lilljehorgi is identical with Psammodynastes pulveruUntus, 

 Boie, and first make a comparative survey of the most 

 prominent differences between them : — 



