236 Miscellaneous. 



Lengtli of dactylus 7*0 



Length of sixth somite of pleou 13'0 



Length of telson 16'0 



Breadth of telson 13'3 



Length of inner lamella of uropod 14'0 



Breadth of inner lamella of uropod 13'3 



Length of outer lamella of uropod 19'0 



Breadth of outer lamella of uropod l^'O 



Station 2143, March 23, 1884- ; Gulf of Darien; north latitude 

 9° 30' 45", west longitude 76= 25' 30": 155 fathoms, green mud. 

 One female (6939).— Proc. United States Nat. Mus. 1885, p. 167. 



New Haven, Conn., April 29, 1885. 



On a Crocodile-skull from the Tertiary Deposits of Eggenhurg in 

 Lower Austria. By Ekanz Toxjla and Johann A. Kail. 



The skuU described by the authors was obtained from a sandy 

 deposit containing granite-blocks aud rolled pebbles on the western 

 slope of the Calvarienberg near Eggenburg. Eeniains of Halithe- 

 rium were obtained from the same locality. The crocodile-skull was 

 in fragments, which, however, have been fitted together, and show 

 it to have been at least 73 centim. (about 30 inches) in length from 

 the imperfect muzzle to the hinder margin of the parietals, while 

 the greatest width is 35*5 centim. The bones of the roof of the 

 skull are pretty well preserved ; those of the under surface only in 

 the fore part, 



From a comparison of the specimen with, various recent aud fossil 

 forms the authors conclude that it represents a new form inter- 

 mediate between Oavialis and. Crocodilus. As regards the total 

 number of teeth, (twenty) it would agree with the genus Tomistoma, 

 S. Mlill. ( =Iihync7iosucJms,'Kuxl.), but it differs from this in having 

 five teeth in the intermaxillaries (arranged as in Gavialis), and in 

 having the sixth upper tooth the largest, instead of the fifth as in 

 Tomistoma. The teeth of the lower jaw fit into pits between those 

 of the upper jaw, the extremitj- of the snout is not enlarged, and 

 the suture of the intermaxillaries extends only to the third tooth of 

 the supramaxillaries — characters indicating relationship with Tomi- 

 stoma, while the raised orbital margins remind one of Gavialis. 

 Mecistops has only seventeen teeth, and is further distinguished by 

 the enlargement of the snout at the end and in the region of the fifth 

 upper tooth ; while Gavialis has from twenty-seven to twentj-eight 

 teeth directed outwards, and differs in other characters. The authors 

 conclude that their specimen is to be regarded as a form inter- 

 mediate between Gavialis and Crocodilus — most nearly related to the 

 genus Tomistoma, which is now" living in the rivers of Borneo and 

 North Australia — which they propose to name Crocodilus (Gavia- 

 losuchus, n. gen. ?) eqgenhurgensis. — Anzeiger d. k, Alad. d. Wiss. 

 in Wien, May 7, 1885, p. 107, 



