TELLINA.—Puate IX. 
and more broadly-truncated, then the concentric ridges on 
the anterior third of the surface are much more distinct 
and coarse, and in the third place there are very strong 
concentric ridges on the posterior dorsal slope of the right 
valve, which are wholly wanting in the neighbouring 
species. The overlapping flexure in the antero-dorsal 
edge of the right fold is very much more conspicuous. 

Species 39. (Mus. Sowerby.) 
TELLINA SENEGALENSIS. Tel. testd suborbiculari, sub- 
solidd, subinequivalei, inequilaterali, subcompressi, 
albido-flavescente purpurco-cerulescente fasciatd, et ad 
umbones pictd, antice rugis tenuibus concentric liratd, 
medio oblique striatd, posticé minutissimé ang ulatim 
striatd, latere postieo obliquo, margine dorsali deelivi, 
termino obtuso, latere antico breviusculo,margine dorsali 
breviusculo declivi, valvuld dextra sinistram superante, 
ad marginem dorsalem anticum flexuosa, expansi, den- 
tibus lateralibus parvis, subapproximatis. 
Tue Seneeat Tpuurna. Shell orbicular, subsolid, sub- 
inequivalve, inequilateral, subcompressed, yellowish- 
white, banded and painted at the umboes with bluish- 
purple, ridged concentrically with fine wrinkles in 
front, obliquely striated in the middle, very minutely 
angularly striated posteriorly, posterior side oblique, 
with dorsal margin sloping, obtuse at the end, ante- 
rior side rather short, with dorsal margin rather short, 
sloping, right valve overlapping the left, flexuous and 
expanded at the anterior dorsal margin, lateral teeth 
small, moderately near. 
Hantey, Pro. Zool. Soc. 1844. 

Hab. Senegal. 
A lighter and more finely-sculptured shell than Zellina 
splendida, with other peculiarities mentioned in the de- 
scription of the latter. 

Species 40. (Mus. Sowerby.) 
TELLINA NASUTA. 
pressd, subeequivalvi, subequilaterali, sublevigatd, al- 
Tel. testa obliqué subovatd, subcom- 
bidd, leviter striata, medio lateraliter arcuaté ; latere 
postico producto, acuminato, subrostrato, leviter plicato, 
margine dorsali elongato, valde declivi, termino sub- 
truncato ; latere antico inflato, subrotundo, margine 
dorsali oblique convewo, margine ventrali medio sub- 
flewuoso, postice sursum acclivi, fleaurd postico-ventrali 
valida, dentibus lateralibus nullis. 
THE NASUTE TELLINA. Shell obliquely subovate, subcom- 
pressed, subequivalve, subequilateral, rather smooth, 
whitish, slightly striated, laterally arched in the 
middle; posterior side produced, acuminated, slightly 
rostrated, with a slight fold, dorsal margin long, 
very sloping, slightly truncated at the end; anterior 
side inflated, rather round, with dorsal margin ob- 
liquely convex, ventral margin subflexuous in the 
middle, sloping upwards posteriorly, posterior ventral 
flexure strong, lateral teeth none. 
Connrap, Jown. Acad. Nat. Sci. Philad. vol. vii. p: 258. 
Hab. California. 
Remarkable for the produced form of the posterior ex- 
tremity. 
