158 CRETACEOUS LAMELLIBRANCHIA. 
1854. Prormn srriato-puncratus, J. Morris. Cat. Brit. Foss., ed. 2, p. 177. 
8 
1868. — arzigrrEnsis, P. de Loriol. Valangien d’Arzier, p. 47. pl. iv, 
figs. 3—5. 
1870. —  srriaro-puncratus, F. J. Pictet and G. Campiche. Foss. Terr. 
Crét. Ste. Croix (Matér. Pal. Suisse, 
ser. 5), pp. 196, 211, pl. clxxi, figs. 
4, 5. 
= —  ARZIERENSIS, Pictet and Campiche. Ibid., pp. 195, 211, pl. elxxi, 
fig. 3. 
1871. —  (CAMPTONECTES) stTRIATO-puNcTATUS, IF. Stoliczka. Palont. 
Indica, Cret. Fauna 8. 
India, vol. iu, p, 428. 
1877. —  strrIAto-puncratus, G. Bohm. Zeitschy. d. deutsch. geol. Gesellsch., 
vol. xxix, p. 253. 
188-4. _ — O. Weerth. Die Fauna des Neocom. im Teuto- 
burg. Walde (Palaeont. Abhand1., 
vol. 11), p. 53. 
1888. —  arziprensis, 8. Nikitin. Les Vest. de la Pér. Crét. dans la Russ. 
centrale (Mém. Com. Geéol., vol. v), 
p. 73, pl. ii, fig. 12. 
1889. —  LENs, var. Morini, G. W. Lamplugh. Quart. Journ. Geol. Soc., 
vol. xlv, p. 615. 
1895. —  (Casmpronecres) striaro-puncratus, F. Vogel. Hollind. Kreide., 
p. 04. 
1896. — srRrato-puncratus, A. Wollemann. Zeitschr. d. deutsch. geol. 
Gesellsch., vol. xlvii, p. 840. 
1900. — -- — Die Biv. u. Gastrop. d. deutsch. 
u. hollind. Neocoms (Ab- 
handl. d. k. preussisch. geol. 
Land., N. F., pt. 31), p. 49. 
? 1900. — G. Miller. Verstein. d. Jura u. d. Kreide. In 
W. Bornhardt, Zur Oberflichen u. 
Geol. Deutsch-Afrikas (Deutsch- 
Ost-Afrika, vol. vii), p. 550, pl. 
xxiv, fig. 7. 
Description.—Shell ovate, a little higher than long, nearly equilateral, convexity 
small, margins rounded, dorsal portion pointed. Kars unequal. 
Right valve flattened, anterior ear with a deep sinus. Left valve rather more 
conyex, anterior ear with the outer angle nearly rectangular, posterior ear with 
obtuse outer angle. 
Both valves ornamented with numerous flattened radial ribs, which curve out- 
wards from the median part of the valves, and sometimes bifurcate, or have new 
ribs intercalated. Ribs separated by narrow, sharply marked punctate grooves. 
At intervals a few distinct growth-lines occur. Ears with radial ribs crossed by 
concentric growth-ridges. 
