286 
ZOOLOGICAL LITEllATURE. 
From a consideration of recent lamellibranch* shells the 
author has devised a system of generic characters founded on 
the hinge-teeth, which are written in formulie like those used 
for the teeth of Mammalia. Thus Trigonia is represented by the 
formula 
Order INCLUSA, Cuv. {Pholadacea, Adams). 
PHOLADIDiE. 
Navea newcomhii, sp. n., Tryon, Am. Journ. Oonch. i. pp. 39 & 285, pi. 2. 
figs. 1-3, Lower California. 
Penitella parva, sp. n., Try on, 1. o. figs. 4 & 6, Lower California j P. cur- 
vata, Tryon, 1. c. p. 40, pi. 2. figs. (>-8, Straits of Fuca. 
Nettastomella, g. n., Carpenter. Type Pholas darmnii (Sow.) = Pfirapholas 
penita (Tryon). Valvis postice in calycem testaceum planatum prolongatis j 
calyce coriaceo nullo. Proc. Zool. Soc. 1865, p. 202. 
Teredo. This genus is treated by Jeffreys, Brit. Conch, iii. p. 123, in 
an almost monographic manner. As regards the rasping action of Teredoj 
the author states as his opinion that the valves, instead of the foot, serve as 
a fulcrum, and that they are pressed equally against both sides, while the 
tissue of the foot is employed in absorbing and detaching, slowly but grad- 
ually, minute particles of the moistened wood. In a former volume he 
compares the result of this action with the destruction of the toe of St. 
Peter’s statue in St. Peter’s church at Rome by the kisses of the religious 
visitors. The species of Teredo inhabiting fixed and submerged wood on 
the British coasts, and consequently to be considered indigenous, are T. 
norvegica (Spengl.) (including divaricata, Fischer), T. navalis (L.), T. pedi- 
cellata (Quatref), and T. megotara (F. & H.). T. malleolus (Turt.), 2\ 
hipinnata (Turt.), and some other species approach the British shores in 
drift-wood only. 
M. Crosse states that a mixture of the resinous matter of two trees from 
Cochinchina (one being named cay-dan) is used by the Annamites and re- 
commended by M. A. Mariot as a preservative against the ravages of Teredo. 
Journ. Conch, xxii. pp. 67, 367, & 368. 
Nausitora is a new genus proposed by E. P. Wright j it is described, but 
no distinctive generic characters are pointed out. N. dunlopei^ sp. n., River 
Comor, Bengal. Trans. Linn. Soc. xxiv. 1864, p. 463, pi. 46. 
SoLENIDiE. 
Soleu brevisswmsj sp. n.. Martens, Ann. & Mag. Nat. Hist. 1806, xvi. 
p. 432, Singapore. — S. (? sicarius, var.) rosaceus, sp. n., Carpenter, ibid. xv. 
p. 177, Sta. Barbara and S. Pedro, California. 
CoRBULIDiE. 
S^dienia ovoklea, sp. n.. Carpenter, Proc. Acad. Nat. Sc. Philad. 1865, p. 61, 
I’uget Sound. 
