PHOC^TiNA DALI 11. 



123 



The type-specimeu, tliougli very young, measured 102'"' iu lengtb, 

 wbieh would indicate that the species is larger than P. communis. 



Iu the following table a part of Dr. Burmeister's measurements of 

 the skull and exterior are placed in juxtaposition with the measurements 

 of a male specimen of P. communis given by M. Fischer, and of a skull 

 of P. communis from Puget Sound, iu the national collection. 



Measurements of ihe exterior. 



Measurements. 



P. sptnipin- 

 nis, d, type 



(from 

 Barmeister). 



Total lensth 



LeiJiTth of the mouth 



Distauce from extremity of snout to blowhole .. 

 Di.stiiute from extremity of snout to dorsal liu. . 



Height of (hirsal tin 



DistVuice from extremity of snout to pectoral ... 



Length of pectoral tin 



Breadth of lliikes 



Cm. 



102. 

 8 .'"> 

 16.0 

 i)0. 

 12.;) 

 :j2. 

 20. 

 39.0 



P. commiinig 



male (from 



l''iseher). 



Cm. 



104.0 

 i:io 

 17.0 

 72.0 

 13.0 

 30. 



in. 



42.0 



Measurements of the slcuU. 



Measurements. 



Length of the skull, from the surface of the occipital 



condyles to the extremity of the beak 



Length from the condyles to the posterior wall of the 



nares 



Length of the beak from its extremity to the loot of the 



malar 



Breadth of the skull between the po.storbital processes 



of the frontal 



Breadth of the foramen magnum 



Height of the foramen magnum 



Height of the skull, from the lower edge of the occipital 



condyles to the crest. 



Breadth of the beak at the base. 



Breadth of beak at middle 



Breadth of the nares 



Distance from the lower border of the foramen magnum 



to the jiteiygoids 



Length of th(^ alveolar border 



Length of the lower Jaw 



Length of its symphysis 



Height between the angle and coronoid process 



P. spinipin- 

 nis, (f, type 



(from 

 Burmeister). 



Cm. 



20.0 



12.2 



10.2 

 3.5 

 3.7 



11.0 

 8.0 

 5.5 

 3.0 



11.0 

 7.0 



21.2 

 2.0 

 



P. communh. 



Puget Sound 



U. S. 



Nat. Mus. 



Cm. 

 29.3 



11.0 



13.9 



16 

 2.9 

 2.7 



11.2 

 H. C 

 5.4 

 3.4 



9.9 

 11.8 

 2,i. 

 2.9 

 0.3 



It is probable that the skeleton of this species when known will be 

 found to differ considerably from that of P. communis. 



PHOCENA DALLII True. 



Phocaina daUii, Tnie, Proc. U. S. Nat. Mu.s., viii, 188.'), pp. 95-98, Pis. ii-Vl. 

 Since the publication of my description of this species the National 

 Museum has receiv^ed a second skull from Lieut. Commander II. E. Nich- 

 ols, who obtained it at Hoonyah Sound, Alaska.* This specimen and the 



* There is also a skull of this species (Xo. 3961) in tha Berlin Anatomical Museum. 

 It was obtained by Chainisso, but the exact locality is not oiveu. 



