222 CRETACEOUS LAMELLIBRANCHIA. 
narrower and the intervening grooves broader. The scale-like projections are 
sometimes greatly developed. 
Measurements : 
(1) (2) (3) (4) (5) (6) 
lengthy 139% . 130 50 eS eee eSeminar 
Height. 152 pay 5 Jl , wes . Ie . Wo ,. 
(1—6) Perna-bed, Atherfield. 
Afinities.—This species is related to Hinnites Renevieri (Coquand),’ but is dis- 
tinguished by the ribs being less frequently bifurcated and more nearly straight. 
H. Leymerii, Deshayes,’ differs from H. Favrinus by the great mequality of the 
ribs—a few being large with smaller ribs in the interspaces. 
Philippi* has discussed the affinities of the group to which the above-mentioned 
Fic. 7.—Hinnites Favrinus, Pict. and Roux. Museum of Practical Geology, No. 8444, Lower Greensand 
(Perna-bed), Atherfield. Left valve. x 2 
3 
species belong, and is inclined to regard it as genetically independent of the 
Tertiary species of Hinnites. This view seems to be based chiefly on negative 
evidence, viz. the absence, so far as at present known, of Hinnites from the Upper 
 Pictet and Campiche, ‘ Foss. Terr. Crcét. Ste. Croix’ (1870), p. 227, pl. elxxvi. 
* Pictet and Campiche, ibid., p. 224, pls. clxxiv, clxyxv. Deshayes, ‘Mém. Soc. géol. France,’ 
vol. v (1842), p. 27, pl. xiv, fie. 1. 
> *Zeitschr. d. deutsch. Geol. Gesellsch.,’ vol. 1 (1898), p. 601. 
