413 
Pendroit o& sort constamment la branchie.’’ Although this 
latter assertion seems to be of a general character, without re- 
ference to the species, it must be observed that the figure of 
Chenu shows a porous slit. The measure given seems to me to 
correspond well with the figure. 
CLAIRBONENSIS, Lea, Contrib. to Geology, 1833, pl. 1. f. 1; 
Chenu, 2. f. 15. Very like S. vitis, Morton. 
cost, Cantr. Bull. Acad. Bruxelles, 1836, no. 3.p.21. A-small 
species from the Mediterranean, not described, in the collection 
of M. O. Costa at Naples. 
cristata, Kénighaus, Bronn’s Jahrbuch f. Mineralog. 1831, 
p- 139. A fossil species from Touraine without description. 
cumini, Morch., ex ins. Philippin. 
CYLINDRELLA, Morch, n. sp. 
busi, Defr., Chenu, Ill. pl. 2. f. 4a. Fossil from Grignon. 
EcuHrINaATA, Anton, Verz. 1838. Fossil from Paris. 
ENcausticus, Morch, n. sp. 
FLORINA, Defr. Dict. Sc. 1827, t. 49. p. 216; Chenzu, Ill. t. 2. 
f. 9 a—c, original specimens. Is the only affixed species of the 
genus, perhaps the type of a new genus. 
FURCELLUS (Agathirses), Montf. Conch. Syst. 1808, p. 398. 
Fossil from Grignon. 
eicas, Lesson, 1830, Voyage de la Coquille, p. 409. Moluccas. 
According to the expression “‘ caréne garnie de lamelles spines- 
centes,”” must be a Tenagodus. 
GLABRA, Risso, 1826, Hist. iv. p. 115. T. tenuissima, glaber- 
rima, pellucida, fragilis, sulcis et lineis longitudinalibus equa- 
libus exiguissimis sculpta; epidermide succinea. Lg. 0-086. 
Régions coralligénes profondes.=S. coste, Cantr. ? 
GRANTII, Sow. Geol. Trans. v. p. 327. t. 25. f. 2¢. Fossil. 
tncisa (Helix), Chem. 1786, ix. p. 129. f. 1116. T. depressa 
umbilicata alba, margine inciso et quasi dissecto, apertura ro- 
tunda (Wood, Index, copied)=S. senegalensis, Récluz, young. 
LaCTEA, Lam. Hist. 1818, p. 338. no. 5; Chenu, Ill. (Pyxipoma). 
LzvicaTa, Lam. ib. p. 338, T. tereti obsolete costata, laxe con- 
voluta; rima articulata. T. blanchétre, Mont. f. 13 C?; 
Blainv. Dict. t. 79. p. 213; Chenu, Ill. 2. f. 11; Coll. Mus. 
f. 11 6, from the coll. Delessert, is perhaps S. rosea, Blainv. 
It is doubtful to me if it is a Tenagodus or Siliquarius. 
Lzvis (Vermetus), Bellardi, Foss. Num. de Nice, 1852, p. 228. 
t. 15. f.4. TT. laze contorta, cylindrica, levis. This species 
belongs perhaps to Siliquaria. 
ta, Lam. Hist. v. 1818, p. 338. no. 6. T. tereti, per longitu- 
dinem multistriata, laxe contorta ; striis squamulis asperatis, 
