^8 



PKOCEEDlNGS OF UNITED STATES NATIONAL MUSfitJM. [1865. 



Length posterior margin of dorsal 7.5 



Tip of lower jaw to genital slit 43. 



Length of genital slit 3. 



Genital slit to anus 4. 25 



Anus to notch of the flukes 22. 75 



Breadth of flukes (transverse) 18. 5 



Length of flukes (antero-posterior) 5.25 



Breadth of narrowest part of tail before the flukes 1. 75 



Height of body at same point 3.5 



Length of eye 75 



Width of spout-hole 1.87 



Extension of white area posterior to the anus 6. 5 



Length of white area along the belly 18. 



Width of head at corner of the mouth 5. 5 



Depth of body 24 inches anterior to the flukes (at which point the keels are 



widest) 10.0 



Depth 8 inches anterior to flukes 7. 5 



Navel to anterior end of genital slit 7. 5 



Measurements of the type skull of Phoccena Dalli, and of a skull of P. communis. 



Measurements. 



P. Dalli, Adakh 

 Id., Alaska. Type. 



Centim. lOOths. 



P. communis, East- 

 port, Me. 9164. 



Centim. lOOths 



Totallength 



Length of beak 



Breadth of beak at base of notches 



Breadth of beak at its middle 



Brejidth of intermaxillaries at same point 



Greatest breadth between outer margins of intermaxillaries 



pcoximally 



Length of tooth-line 



Last tooth to base of maxillary notch 



Tip of beak to anterior margin superior nasal opening 



Tip of beak to end of crest of pterygoid 



Breadth between orbital processes of frontal 



Breadth between hinder margins of temporal fossae 



Length of temporal fossa 



Depth of temporal fossa 



Total length of mandible 



Length of symphysis of mandible 



Length of tooth-row of mandible 



Depth between angle and coronoid process 



Number of teeth 



33.3 

 14.0 

 9.5 

 5.7 

 3.5 



5.1 

 12.7 



2.2 

 17.8 

 21.3 

 16.5 

 16.2 



5.6 



2.6 

 25.5 



3.8 

 12.2 



5.7 

 /23-23\ 

 \27-27) 



100.0 

 42.0 

 28. 5 

 17.1 

 10.5 



26.0 

 11.7 



7.8 

 4.8 

 2.2 



3.6 

 9.8 

 2.3 

 14.8 



12.2 



12.0 



6.3 



4.2 



m 



100.0 

 44.5 



29.5 

 18.5 

 8.4 



14.0 



37.5 



8.6 



56.2 



46.8 

 45.7 

 24.1 

 16.1 



ON PEUCiEA MEXICANA (LAWR.) A SPARROW NEW TO THE 



UNITED STATES. 



By ROBERT RIDOWAIT. 



In Dr. J. C. Merrill's " Notes on the Ornithology of Southern Texas," 

 &c. (Proc. U. S. Kat. Mas., vol. i, p. 127), a species cf sparrow is men- 

 tioned under the name of Peuccea arizoncc. which was " found in some 

 abundance on a salt prairie about 9 miles from Fort Brown," and ®f 

 which both specimen of the bird itself and its nest and eggs were ob- 

 tained by Dr. Merrill. The species was referred by me to P. arizonce 

 with some doubt, satisfactory identification being almost out of the 

 question on account of the rather poor condition of the specimens ex- 

 amined, while the examples of P. arizonce with which they were com- 



