458 PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



The Dighton Rock Inscription. An Opiuion of a Danish Archaeologist. 

 In: The Magazine of American History, Yol. Ill, New York and 

 Chicago, 1879, p. 230. 



Review (illustrated) of " Archeologie Am^ricaine. Dechiffrement des ^cri- 

 tures Calculiformes ou Mayas. Le Bas-relief de la Croix de Palenque et 

 le Manuscrit Troano." Par M. le C'** H. de Charencey, Alengon, 1879. In: 

 The American Art Eeview, Yol. II, Boston, 1880, p. 32. 



Aboriginal Stone-drilling. In: The American Naturalist, July, 1881, p. 

 536; illustrated. 



Observations on Cup-sliaped and other Lapidarian Sculptures in the Old World 

 and in America. In: Contributions to North x^merican Ethnology, 

 Yol. Y (U. S. Geographical and Geological Survey of the Eocky 

 Mountain Region, J. W. Powell, in Charge). Washington, Govern- 

 ment Printing Of&ce, 1881. 4°, pp. 102 ; 61 illustrations on 35 plates. 



Die Jadeitgegenstande des National-Museums zu Washington. In : Archiv 

 fiir Anthropologic, Yol. XI Y ; illustrated. In press. 



Articles on Anthropological liubjects, contributed to the Annual Reports of 

 the Smithsonian Institution from 1863 to 1877. Washington, published 

 by the Smithsonian Institution, 1882. 8°, pp. X, 169; illustrated (No. 

 440 of Smithsonian Publications). 



DESCRIPTION OF FITE IVFTV SPFCIES OF FISHFS FROITI IHAZAT- 



liAN, inEXIC'O. 



By DAVID S. JORDA]\ and CHABL.ES H. OILBERT. 



Tylosurus sierrita, sp. uov. (28162, 28265, 29227, 29377, 29378.) 

 Closely allied to Tylosurus exilis (Grd. ). 



Body very slender, not compressed ; caudal peduncle depressed, half 

 wider than deep, the Literal line forming a moderate keel, which is not 

 black. 



Jaws very long, slender, and fragile, as in T- exilis, longirostris, &c., 

 the tip of the lower (as nsual) projecting ; length of upper jaw from eye 

 2f times length of postorbital p^irt of head, 9 times sjiace between nos- 

 trils; maxillary scarcely reaching vertical from front of pupil, about 

 half of its posterior portion slipping under the preorbital ; preorbital 

 small, not extending backward to tip of maxillary. 



Teeth essentially as in T. longirostris ; an outer band of small acute 

 teeth in each jaw, and an inner series of long, sharji, slender teeth, 50 

 to 60 in each jaw ; middle line of lower jaw in front of tongue Avith a 

 band of rasp-like teeth; no teeth on vomer; no gill-rakers. 



Eye large, contained 2^ times in postorbital part of head ; interorbital 

 region with a rather broad and deep, scaly groove, widest anteriorly and 

 extending backward to opposite middle of cheeks ; behind this, the mid- 

 dle part of the cranium is somewhat elevated and bounded by two longi- 



