PSEUDORCA CRASSIDENS. 145 



and iu the smaller number of teeth; the preinaxillary bones are rela- 

 tively narrower throughout the greater part of their length."* As re- 

 gards the breadth of the beak anteriorly, it should be stated that the 

 skulls of P. meridionaUs described prior to the date of Professor Cope's 

 writing were young, while the beak under consideration is froui an old 

 individual, as is shown by the partial anchylosis of the premaxilhe witli 

 the maxillie, and the worn condition of the teeth. The teeth iu this 

 specimen are ^^g, and exceed, therefore, the number iu one of the speci- 

 mens of P. meridionaUs (No. 2'J84) iu the Lioyal College of Surgeons, in 

 which the number is |5|. As regards the posterior tooth " being the 

 last of the maxillaries, instead of the uiaudibulars, a,:t iu meridionaUs,''^ 

 I do not think any cotologist would iusist upon this as a specific char- 

 acter. The last maxillary tooth was evidently the farthest back iu the 

 skull froui the northeast coast iu the National Museum, aiul is so in 

 the skull figured by Vau Beueden and Gervais {Ostcog., Pi. L, figs. 8 

 and 8a). I can not regard the specimen as other than P. crassidens. 

 The proportions of the mandible and beak are as follows: 



Measurements of No. 3G79. Off Paita, Peru. 



Inches. 



Greatest length of mandible 20. 75 



Length of symphysis 3. 8 



Length of tooth row 9.0 



Depth between angle and coronoid process 6. 1 



Breadth of beak in front of third tooth (counting from posterior end of row).. 8.25 



Breadth of inter max ilhu at same point . 5.6 



Length of tooth row - 8. 4 



Glohiocephalus Grayi Burmeister. 



Gerv^aist and Reinhardt| have already expressed their belief iu the 

 identity of this species with P. crassidens, and there is apparently no 

 reason for dissent from their opinion. It has one tooth more above on 

 each side than is common, and all the teeth are very much worn, though 

 the skull ditters in length from No. 10320 iu the national collection by 

 only three-tenths of au inch. Iu the characters poiuted out by Bur- 

 meister iu his monograph as peculiar to this skull, it agrees with the 

 specimens of P. crassidens which I have examined. 



Pseudorea f mediterranea Giglioli. 



Professor Giglioli describes iu the Zoologischer Anzeiger (v, 1882, p. 

 289) under this name a species found in the Mediterranean. 



He giv^es, however, no characters by which its relatiouships can be 

 determined. The teeth are 1} or \%. The total length of the skull in the 

 Koyal Zoological Museum in Florence is 64"'" long; its greatest breadth 

 is 40' "'. 



*Proc.Acad. Nat. Sci. Philadelphia, 1866, p. 293. 



t Gervais, Joiiru. de Zoologie, i, p. 68; Jonrn. do Zoologie, ii, p. 36. Ostdographie 

 des C<5tac6s, p. 548. 



t Reiuliardt, Videus. Meddel. Natur. Forening. 

 18378— Bull. 30 10 



