954 mr. e. r. alston on neotropical squirrels, [nov. 19, 



100. Dendrocygna vagans (203). 

 [Zamboanga, $ > April.] 



101. Dysporus sula (214). 



[Zamboanga, $ , May : iris white ; bill dirty white ; orbital and 

 gular space pale green ; feet very light greenish yellow ; nails grey, j 



A young female in dirty-brown plumage, darkest on breast, throat, 

 neck, head, and back. 



5. Supplementary Note on the Neotropical Squirrels. 

 By Edward R. Alston, F.L.S., F.Z.S., &c. 



[Keceived November 8, 1878.] 



I regret to say that several errors have crept into my paper " On 

 the Squirrels of the Neotropical Region," 1 owing in part to my absence 

 from town when the sheets were passing through the press. Two 

 or three of these appear sufficiently serious to require correction. 



Sciurus variabilis. In the remarks on this species S. rufo- 

 niger is a clerical error for S. bnmneo-niger, at p. 666, seventh line, 

 and at p. 667, second line. 



Sciurus pusillus. At p. 670 I remark that I was not able to 

 ascertain Geoffroy's type in the Paris Museum. It appears that I 

 had overlooked it ; for Professor A. Milne-Edwards has kindly in- 

 formed me that it is still there. Unfortunately the skull is wanting, 

 so that its age cannot well be ascertained. The want, however, is sup- 

 plied by the British-Museum specimens, of which the skulls and teeth 

 show them to he fully adult, although an unhappy misprint (p. 671, 

 eighteenth line) makes me state the exact contrary. M. Milne- 

 Edwards has sent me the following measurements of the types of 

 5 1 . pusillus and S. rufo-niger : — 



$. pusillus. 



millim. 



Length of head 0039 



„ head and body 0"089 



,, tail (imperfect) 



S. rufo-niger. 



millim. 



Length of head 0048 



„ head and body - 178 

 „ tail (with hair) 0139 



This last specimen appears to me to have been considerably over- 

 stretched in mounting. 



In conclusion I may add that I have had the pleasure of receiving 

 a letter from Mr. J. A. Allen, in which he accepts almost all the 

 determinations at which I arrived in the paper in question. 



1 Supra, pp. 65G-670. 



