16,2 Taylor: Philippine Turtles 133 
distinguished by the absence of the temporal arch and by the 
yellow ring on the posterior part of the head. 
CHELONIID^ 
Cheloniidse Cope, Proc. A. Philos. Soc. 20 (1882) 143. 
Large turtles with paddle-shaped legs; nine plastral bones 
covered with epidermal horny shields; caudal vertebrae procoe- 
lous ; neck not completely retractile ; temple roofed over, parietal 
bone in contact with squamosal; one or two claws on each leg. 
Genus ERETMOCHELYS Fitzinger 
Caretta Ritgen, Nova Acta Acad. Leop.-Carol. 14 (1828) 270 (not 
of Rafinesque). 
Eretmochelys Fitzinger, Syst. Rept. (1843) 30. 
Onychochelys Gray, Proc. Zool. Soc. London (1873) 397. 
Marine turtles, having paddle-shaped legs, each with two claws ; 
carapace with four pairs of costals and two pairs of prefrontal 
scales; scales of carapace imbricating, with three keels; two 
keels on plastron. 
The turtles of this genus furnish the precious tortoise-shell 
of commerce, which is an important article of export from the 
Philippine Islands. ' 
Eretmochelys imbricata (Pennant). Plate 5, figs. 1 and 2; Plate 
6, figs. 5 and 6. 
Testudo imbricata Pennant, Ind. Zool. (1769) 87. 
Chelonia Eretmochelys imbricata Fitzinger, Syst. Rept. (1843) 30. 
Eretmochelys imbricata Agassiz, Contr. 1 (1857) 381; Stejneger, 
Report U. S. Nat. Mus. for 1902 (1904) 719. 
Chelonia imbricata Schweigger, Prodr. Mon. Chel. (1814) 21. 
Caretta imbricata Merrem, Syst. Amph. (1820) 19. 
Onychochelys kraussii Gray, Proc. Zool. Soc. London (1873) 398. 
Chelonia virgata- Waglbk, Icon, et Desc. Amph. (1833) pi. 29. 
Chelonia multiscutata KuHL, Beitr. (1820) 78. 
Chelone imbricata Boettger, Ber. Senck. Nat. Ges. (1886) 93 (Jolo). 
Eretmochelys squamata Agassiz, Contr. Nat. Hist. U. S. Am. 1 (1857) 
382; Garman, Bull. Mus. Comp. Zool. Harvard Coll. 25 (1883) 300. 
Caretta imbricata Kelaart, Rept. Ceylon 1 (1852) 180. 
Caretta squamosa Girard, U. S. Expl. Exp., Rept. (1858) 442. 
Caretta rostrata Girard, U. S. Expl. Exp., Rept. (1858) 446. 
Eretmochelys squamosa Stbjneger, Bull. U. S. Nat. Mus. 58 (1907) 
511. 
Description of species . — (From No. 1474, Bureau of Science 
collection; collected at Aparri, Luzon, November, 1908.) Snout 
beaked, somewhat projecting over lower jaw; nostrils small, 
vertical; postnasal shields moderate, five-sided, entering orbit; 
