CEPHALOKllYNCllUS EUTUOl'lA. 



1 lu 



„ti,riwise is practically ideutical with tlie secoud specimen (No. irMih). 

 While in London I purchased of Mr. E. Gerrard another specimen ot 

 the species, also said to have been received from the coast of Chili. 

 This sknll (No. 21167) is intermediate in size between the two m the 

 British Museum and resembles them very exactly, although the tooth- 

 Hue is a trifle longer. The number of teeth is the same, viz, ^. The 

 tyi)e specimen (93Gft) appears to have somewhat smaller temporal fossa3 

 than the other two; it may be a female. 



In cranial characters this species appears to differ from C. heavmdn 

 principally in having the pterygoids longer and more closely approxi- 

 mated at' the base. The brain-case also appears to be considerably 

 narrower and the teeth slightly more numerous. The skull is larger 

 than that of C. heavmdei. 



We know nothing of the skeleton or external form of this species. 



TahJe of measurements. 

 CEPHALORHYNCHUS EUTROPIA. 



18378— Bull. 3G- 



