TTEROrrS PHJ;OCEPHALUS, 



299 



basis of the cotypes of the former and figures of the latter. The 

 skull figured in Matschie's ' Megachiroptera,' ])1. v. figs. 1-5, as 

 "P/. 2^/((TOfe2</ia?«s(?)" (original, Berlin Museum, no. 4065, Ponape, 

 Finsch) is tliat of a species of the Ft. mariannus group, the same as 

 figured under the name Pt. insidaris, male, pi. v. figs. 11-12 

 (original, Berlin Museum, no. 5697, Ruck, Finsch) ; the skull of 

 the true Pi. insidaris is figured in the same plate, figs. 6-10 

 (original, Berlin Museum, no. 5698, Huck, Finsch). 



Remai-ls. — Pt. jyhccocephalus is perfectly similar to Pt. insidaris 

 in skull, dentition, palate-ridges, and all external characters, except 

 the much paler colour of the fur, particularlj' of the back. It is 

 unlikely that the paler colour is due to fading in alcohol. If it is, 

 the deterioration of the colour has taken place before the specimen 

 came into the possession of the British Museum ; the colour of the 

 type is still quite in accordance with the description given by 

 Mr. Thomas in 1882. So far, the evidence is in favour of the 

 assumption that Pt. phceoce2}halus (Mortlock group) is specifically 

 distinct from Pt. insidaris (Euck group). 



skull. 



Mortlock, Central Carolines Godeifroy Museum. 82.10.27.4. 

 {K'ubary). ( Ty/je of species.) 



hlrtemal measurcwints o/Pt. insularis and phacocephalus. 



Forearm 



PoUex, total length, c. u 



„ metacarpal 



,, 1st phalanx 



2nd digit, metacarpal 



,, l.«t phalanx 



,, 2nd-3rd phalanx, c. n. 

 .'•rd digit, metacai-pal 



,, 1st phalanx 



,, 2nd jihalaux 



4th digit, metacarpal 



„ 1st phalanx 



,, 2nd phalanx 



.'Jth digit, metacarpal 



,, 1st phalanx 



„ 2nd phalanx 



Ears, length from orifice 



,, greatest width, flattened ... 



Front of eye to tip of muzzle 



Lower leg 



Foot, c 11 



Calcar 



* Talis Mu.cnni, 53 .\, .33 B (colvpes, Ruck); U.S. N. M. 151563 (L'ala); 

 B. M, 98.1.2.1,2 (Ruck). 



