336 TESTACEOUS MOLLUSGA. 
T. corniformis, p. 4, t..9, f. 49... 7. nana, p. 4, t. 11, f 22. 
T. malleolus, p. 4, t. 11, f. 23. 
On Puotas (p. 5). Consult the monographs of Spengler (Skriv. 
Nat. vol 2, pt. 1), and Sowerby (Th. vol. ii.); see, too, Gray’s list of 
species (Ann. Nat. 1851, vol. 8), Wieg. Arc. 1852, and Pr. Philad. 
vol. 4. 
P. sincula, p. 6; t. Of: 58... B. tpuncaia, pe G, t. 9, 1.267... 
P. crucigera, p. 6, t. 11, f. 53 ... P. Campechensis, p. 6, t. 9, f. 44... 
P. clausa* (of Gray’s MS. i.e. tablet in British Museum), p. 6, t. 11, 
f. 8 ... P. acuminata, p. 8, t. 9, f. 30 ... P. Californica, p. 8, t. 9, 
f. 43. 
On GastrocHENA (p. 10). Consult Spengler in Dankse Viden- 
skabernes Selskab Skrivter, vol. 1. (1783). See, too, G. dentifera 
(Dufo, An. Sc. Nat. 1840) and G. gigantea (Desh. Traite Elem. 
ts 2): 
G. Mytiloides, p. 10, t. 9, f. 87 ... G. truncata, p. 10, t. 9, f. 40... 
G. ovata, p. 10, t. 9, f. 42. 
Xylophaga dorsalis, p. 10, t. 11, f. 21... X. globosa, p. 10, t. 9, 
i012 
On Soten. Consult Spengler’s monograph (Skriv. Nat. vol. 8, 
pt. 2) of the Linnean genus Solen, and the monograph of restricted 
Solens in the ‘Illustrations Conchyliologiques.’ See, too, Gould, 
Pr. Bost. vol. 8, Philippi in the Zeit. Mal. 1848, Dunker in the 
Zeit. Mal. 1850, 1852, and Proc. Philad. vol. 3. 
S. corneus, p. 11, t, 10, f, 42... S. sealprum, p2 12; t, 11, f 26. = 
S. Sloanii, p. 12, t. 11, f. 18... S. Guinensis, p. 12, t. 13, £28... 
S. brevis, p. 12, t. 18, f. 42... 8. Thuelcha, p. 18, t. 10, f. 30... 
. ambiguus, p. 18, t. 11, f. 17... S. Dombet, p. 13, t. 9, £19... 
, Javamous, p, 14, t. 11, £19... 8. candidus, p. 15, t, 11, £29 
. 8. solidus, po1p, t. 1), £29"... 8. costatus, p. 16; t.9) 2°28 on 
. medius, p. 15, t. 10, f. 18... S. novaculina, p. 16, t. 10, f. 7... 
. Californianus, p. 16, t. 10, f. 4 ... S. acutidens, p. 17, t. 11. f. 36 
nas 8. acuminatus, p. 17, t. Li, to. 
SoLEeN Nivevus, Han. t.12, f. 40.—After 8. actnacrs, Hanl. Z. P. 
1843. Linear, snow-white, about four times as broad as long, some- 
what depressed, decidedly curved, abrupt and scarcely convex at the 
shorter end, attenuated and rounded at the other extremity; epi- 
dermis glossy, yellowish; hinge terminal, a single rounded tooth in 
each valve. 3...3. 
RR? RM 

1 T cannot find this name (the reference was communicated to me 
by the author himself) in any work of Bowdich’s. The species is very 
like Ch. f. 862, termed eaplanata by Spengler (in Schrét. Ein1.). 
