SALENIDiE. 53 



ACROSALENIA. 



Agassiz, 1840. Ech. foss. Suisses, Pt. 2, p. 38. 



Type-species, Acrosalenia spinosa Agass., 1840. Ech. foss. Suisses, Pt. 2, p. 39. 



Jurassic and Lower Cretaceous SalenidiB. 



Plesiosalenia. 



Valette, 1906. Bull. Soc. Sci. Hist. Nat. Yonne, LIX, p. 275. 

 Type-species, Acrosalenia pentagona Cott., 1879. Pal. Franq., Terr. Jur., p. 365. 



Jurassic Salenidse. 



Perisalenia. 



Valette, 1906. Bull. Soc. Sci. Hist. Nat. Yonne, LIX, p. 276. 

 Type-species, Acrosalenia Gauthieri Cott., 1879. Pal. Franq., Terr. Jur., p. 357. 



Jurassic Salenidae, 



Pseudosalenia. 



Cotteau, 1859. Eev. Mag. Zool., No. 4, p. 22. 

 Type-species, Pseudosalenia flex uosa Cott., 1859. Eev. Mag. Zool., No. 4, p. 24. 



Jurassic Salenidae. 



GOXIOPHORUS. 



Agassiz, 1838. Mon. d'Ech. Viv. et Foss., I, p. 30. 

 Type-species, Goniojyhorus lunulatus Agass., 1838. Mon. d'Ecli. Viv. et Foss., I, p. 30. 



Upper Cretaceous Salenidae. 



Peltastes. 



Agassiz, 1838. Mon. d'Ech. Viv. et Foss., I, p. 27. 



Type-species, Peltastes pulchelliis Agass., 1838. Mon. d'Ech. Viv. et Foss., I, p. 27. 



Upper Jurassic and Cretaceous Salenidae. 



Heterosalenia. 



Cotteau, 1861. Pal. Franq., Terr. Cr^t, p. 96. 

 Type-species, Heterosalenia 3£artini Cott., 1861. Pal. Franq., Terr. Cret., p. 97. 



Cretaceous Salenidae. 



Salenia. 



Gray, 1835. Proc. Zool. Soc. London, p. 58. 



Type-species, Cidarites scutiger Goldfuss, 1829. Petrefacta, Pt. 1, p. 121. 



Cretaceous, Tertiary, and Recent Salenidae. 



Three recent species of this genus are now to be recognized : S. Pattersoni 

 A. Ag., which occurs from Western Cuba and Yucatan to Barbado.s, in 50- 

 315 fathoms; the form collected by the "Valdivia" on Agulhas Bank, oflE 



