130 DISCOGLOSSIDiBl. 



quite as short and broadly rounded as in the Sardinian 

 form. As already observed by Lataste, this difference 

 is no greater than that between specimens of Bana 

 tew,poraria, and is certainly not more constant. With 

 regard to the third character, I need simply refer to my 

 tables of measurement and to Oamerano's own table, 

 where Sardinian as well as Sicilian specimens are 

 shown to have the tibia less than half the length of 

 head and body. 



Bedriaga also is inclined to retain D. sardus as a 

 distinct form, although admitting that the existence 

 of annectant specimens renders a precise definition 

 impossible. On the whole, he finds the body shorter 

 in proportion to the head and limbs in Corsican and 

 Sardinian specimens than in those from Algeria and 

 Portugal. That there is nothing constant in that 

 supposed difference may be seen from the following 

 measurements (in millimetres) of four adult males, the 

 heads of which are figured above (p. 126), — a from 

 Corunna, b from Oran, c from Tlemsen, prov. Oran, 

 and d from Luras, Sardinia : 



It will be noticed that the Spanish and Algerian 

 specimens a and h have the head a little longer in 

 proportion to the body than in the Algerian c and the 

 Sardinian d ; that the width of the head beloAV the eyes 

 is as great in proportion in the Algerian c as in the 

 Sardinian d; and that the hind limb is shorter in pro- 

 portion in the Algerian c than in the Sardinian d. 



Heron-Eoyer's D. auritus is founded on Algerian 

 specimens (which had been previously referred by 

 Camerano to D. scovazzii), supposed to differ from the 

 Europeans in having the tympanum distinct, the tern- 



