FISHES OF FAMILY MICRODESMIDAE — REID 



65 



One example 98 mm in standard length. Collected at Chame Point, 

 Panama, by Robert Tweedlie. U.S.N.M. no. 84300 (type). 



II 1^1 nJ^ 1^. i-fii -«f^ iay-« 



PiQUEE 11.— 0, MicTodesmus affinis Meek and Hildebrand, detailed enlargement of head of type, X 3; 

 6, M. retropinnis Jordan and Gilbert, detailed enlargement of head, X 4; c, M. hildebTandi, new species, 

 detailed enlargement of head of type, X 4. 



This species seems most closely related to M. longipinnis (Wey- 

 mouth), agreeing in the number of body and caudal vertebrae as well 

 as fin-ray counts; the difference in position of the vent, as well as 

 proportional measurements, is very pronounced. 



