Vol. II, Pt. I] VAN DENBURGH— GALAPAGOS TORTOISES 253 



These measurements, as well as Gunther's figures, show 

 clearly that the height to marginals is very low in the type 

 specimen. This being true, it must have come from one of 

 three localities, if it represents any of the known non-saddle- 

 backed races. These localities are Chatham, Tagus Cove, and 

 southern Albemarle. The general shape, the great breadth 

 over curve, and the development of the pectoral plates, indi- 

 cate that it did not originate in Chatham Island. It must, 

 therefore, have come from Albemarle Island. Since there 

 occur in southern Albemarle (Cape Rose) tortoises which 1 

 have been unable to distinguish from those of Tagus Cove, 

 any attempt to determine more definitely the place of origin 

 of Gunther's type seems needless. If, then, we are right in 

 considering that the tortoises from Cape Rose are identical 

 with those of Tagus Cove, there are two Albemarle races hav- 

 ing the general characteristics of the type of Testudo micro- 

 phycs. These are the race found at Tagus Cove (and Cape 

 Rose) and the smooth flat-backed race of southeastern Albe- 

 marle, for which I employ the name Testudo giintheri Baur. 

 Lacking as I do any females from Tagus Cove, I am unable, 

 from Giinther's figures and descriptions, or from the measure- 

 ments at hand, to indicate any very satisfactory points of dis- 

 tinction between the type of T. microphyes and those tor- 

 toises from southeastern Albemarle. My opinion, however, 

 is that Giinther's type belongs with the Tagus Cove specimens,, 

 and my "key" so refers it. 



Until it can be shown that his type specimen differs from 

 the specimens taken at Tagus Cove, Giinther's later associa- 

 tion of the name Testudo microphyes with this race should 

 be followed. I therefore employ the name Testudo micro- 

 phyes for the tortoises from Tagus Cove, Albemarle, and for 

 a few specimens taken near Cape Rose on the southern coast 

 of Albemarle Island. 



8. Testudo vidua Giinther. 1875 



This name was proposed by Giinther^ for the carapace and 

 skeleton of a large male of unknown origin. Commander 

 Cookson having found at Iguana Cove, Albemarle, a tortoise 



iTrans. Royal Soc. Lond. 1875. p. 277. 



