88 CRETACEOUS LAMELLIBRANCHIA. 
Other figured specimens are in Mr. Vicary’s collection (pl. xxiii, fig. 7—from Haldon, 
not Blackdown as stated by Lycett; and pl. xxvii, fig. 4), and in Mr. Me¥er’s collec- 
tion (pl. xl, figs. 3, 4). 
Distribution —Greensand of Haldon, Kingskerswell, and near Weymouth. 
Cenomanian of Dunscombe, Branscombe, and Beer Head (Mever’s Beds 10, 11 and 
12); and of Pinhay (Bed 10). Base of Chalk Marl (zone of Sehlaubachia varias) 
of Eggardon Hill, Chard, Chardstock, and Titherleigh (near Chard). 
Triconia Frrront, Deshayes, 1842. 
Additional Synonymy. 
1866. Triconta Frrroni, F. J. Pictet and G. Campiche. Foss. Terr. Crét. Ste. 
Croix (Matér. Pal. Suisse, ser. 4), pp. 381, 386, 
pl. exxvui, fig. 10. 
1875. _— — Lycett, p. 132, pl. xxiii, figs. 4, 5. 
1897. — a R. B. Newton. Proc. Dorset Nat. Hist. and Antiq. 
Field Club, vol. xvii, p. 96, pl. iii, fig. 15. 
T'ypes.—In the Ecole des Mines, Paris, from the Albian of Le Gaty, Hpothémont, 
ete. (Aube). The specimens figured by Lycett are in the Museum of Practical 
Geology, and in the Wiltshire Collection, Woodwardian Museum. The example 
fieured by Newton is in the British Museum. 
Distribution.—Gault (zone i) of Folkestone. Zone of Hoplites interruptus of 
Okeford Fitzpaine. 
Triconia costicERA, Lycett, 1879. 
1879. Lycett, p. 205, pl. xh, fig. 17. 
Type.—In the Museum of Practical Geology. his is the only specimen seen ; 
it is very imperfectly preserved. 
Distribution.—Cenomanian (Meyer's Bed 10) of Dunscombe. 
TRIGONIA PENNATA, Sowerby, 1819. 
_ 1 Additional Synonymy. 
1828. Triconia peNNATA, Defrance. Dict. Sciences nat., vol. lv, p. 297. 
1866. _ _ F. J. Pictet and G. Campiche. Foss. Terr. Crét. Ste. 
Croix (Matér. Pal. Suisse, ser. 4), p. 387. 
1875. —- — Lycett, p. 133, pl. xxiv, figs. 4, 5; pl. xxxvui, fig. 4. 
