( 374 ) 



sluiped — may not be an abnormal speciraen of either T. epiiippium or 7'. nhingdom, 

 which was transported either purposely or by an accident to Indefatigable Island. 



Another very interesting jwint has come to light throngh the new material 

 collected by the three ex]ieditions. All Harris's Albemarle tortoises and a number 

 since sent to Europe by Senlior ( 'obos of Charles Island, (iaidiiiigos, were collected 

 in the south-east corner of Albemarle, and they were all very small, very uniform 

 in size, and had an almost sirooth carapace. They were nearly all jierfectly adult 

 and breeding, and adult males and J'eiiudrs dift'ered very slightly in size, none 

 being over 34 in. in length. On the other band, the largest female of T. vicina 

 from Villa Mil collected by Baur wr.s 30 in. in length ; while the large adult 7nales 



Aiiibl iithijnvhifs iri.^tatu'! (Sea-Tguanas) on shore. 



collected by Snodgrass and Green varied from 47 to ol in. in a direct lino, and 

 .56 to 69 in. over the curve. This to my mind suggests a specific difference; but 

 I cannot separate tliese forms till I'cck returns and brings some material from tlie 

 N.E. and Central-Eastern portions of Albemarle. 



I append the very interesting notes of Mr. Beck on his experiences in c^ajitiiring 

 and on the habits of these extraordinary survivals of a former geological epoch. 



(W. H.) 



The rei)rodnctiiins of [ihotographs taken by Jlr. Beck will give sume idea of 

 the very strange nature of the Gahqiagos Islands. Everything seems to be different 

 there, and the mass of gigantic marine lizards (^Amblyrliifiichiis cristatus) reminds 

 one more of an antediluvian epoch than of a real thing of to-day. 



