478 CRETACEOUS PALEONTOLOGY. 



Pecten craticulus Morton. 

 Plate L., Figs. 15-16. 



1833. Pecten craticula Mort., Am. Jour. Sci., ist ser., vol. 23, 



P- 293- 



1834. Pecten craticula Mort., Synop. Org. Rem. Cret. Gr. U. 



S., p. 57- 

 1861. Pecten craticula Gabb, Synop. Moll. Cret. Form., p. 214 



(158). 

 1864. Pecten craticula Meek, Check List Inv. Poss. N. A., Cret. 



and Jur., p. 7. 

 1868. Pecten craticula Con. Cook's Geol. N. J., p. 725. 

 1886. Pecten (Chlamys) craticulus Whitf., Pal. N. J., vol. i 



(Monog. U. S. G. S., vol. 9), p. 49, pi. 7, figs. 17-18. 

 1905. Pecten craticula Johns., Proc. Acad. Nat. Sci. Phil. 



(1905), p. II. 



Remarks. — This species was described by Morton from a frag- 

 ment of a shell said to have been collected by Conrad at Arney- 

 town, New Jersey. The type specimen was illustrated by Whit- 

 field, but the species has not been met with in the recent collec- 

 tions of the Survey. If the recorded locality of the species is 

 correct it probably came from the Navesink marl. Whitfield also 

 mentions having seen similar fragments labeled Vincentown, 

 New Jersey, which, if the identification and locality are correct, 

 would indicate a much higher horizon. 



Formation and locality. — Navesink marl ?, Arneytown (Mor- 

 ton). 



Geographic distribution. — New Jersey. 



Pecten venustus Morton. 

 Plate LI., Pigs. I-S. 



1833. Pecten venustus Morton, Am. Jour. Sci., ist ser., vol. 



23, p. 293, pi. 5, fig. 7. 



1834. Pecten venustus Morton, Synop. Org. Rem. Cret. Gr. 



U. S., p. 58, pi. 5, fig. 7. 



