Vol. II, Pt. I] VAN DENBURGH— GALAPAGOS TORTOISES 353 



General remarks. — The single tortoise at hand from Jervis 

 Island is very similar in shape to the large males of Testudo 

 vicina from Iguana Cove. The length over the curve in the 

 Jervis Island tortoise is greater than in those from Iguana 

 Cove, so that the curved width is less than the curved length. 

 The front height is less than in T. darzvini of James Island, 

 making the difference between front and middle heights 

 greater. Upon the whole it may be said that the Jervis tor- 

 toise is intermediate between those of James Island and Iguana 

 Cove, and that it seems to resemble the latter a little more 

 than the former. My reasons for using the name T. ivallacei 

 for this tortoise are stated in the introductory portion of this 

 paper (see page ). 



Field Notes — December 18, 1905. — Left Duncan Island this 

 morning, and made Jervis early in the afternoon. Worked on 

 Duncan tortoises all day and got the mess straightened out as 

 well as possible. Expect to get ashore on Jervis tomorrow. 

 Gifford says he saw a lot of old tortoise trails and old drop- 

 pings. The island is very steep, and is composed of red-lava 

 blocks. The beach is all red-lava sand or dust, and trees in the 

 lagoon are visible from the ship. 



December 19, 1905. — Went ashore on Jervis. A fine sand 

 beach with a lagoon back of it. The island is covered with 

 red-lava blocks and ashes. The highest peak is 1050 feet by 

 barometer. I saw old tortoise trails in the ashes, one of which 

 ran up a valley clear to the top. Saw lots of old dung that 

 apparently had been rained on, as it was bleached out rather 

 white. 



December 20, 1905. — Mr. Beck went ashore on Jervis and 

 found a large tortoise on the north side in a small valley. It 

 looks like the south Albemarle ones. 



