TELLINA. 
PuatE LIV. 
Species 316. (Mus. Brit.) 
TELLINA ATTENUATA. el. testd ovatd, compressa, pallide 
JSuled, equivalvi, ovato-acuminatd, tenuiter concentrice 
striata ; latere postico breviusculo, attenuato, subros- 
trato, prope marginem leviter angulato, ante angulun 
contracto ; latere antico oblique producto. 
THE ATTENUATED TELLINA. Shell ovate, compressed, 
pale fulvous, equivalve, ovate-acuminated, finely con- 
centrically striated ; posterior side rather short, at- 
tenuated, subrostrated, with a slight angle near the 
margin, contracted in front of the angle; anterior 
side obliquely produced. 
Desuayres, Pro. Zool. Soc. 1854, p. 363. 
Hab. Port Essington. 
Species 317. (Mus. Brit.) 
TELLINA MACTR@rFoRMIS. Tel. testd parva, oblongo- 
trigond, tenui, levigatd, semipellucidd, equivalei, pal- 
lide fuled, nonnunquam medio obscure purpuraceo bi- 
radiata ; latere postico breviore, attenuato, subacumi- 
nato; latere antico latiore, ad terminum subrotundo. 
Tur MACTRHFORM TELLINA. Shell small, oblong, tri- 
gonal, thin, smooth, semipellucid, equivalve, pale 
fulvous, sometimes with two median purplish rays ; 
posterior side the shorter, attenuated, subacuminated ; 
anterior side broader, somewhat rounded at the end. 
SOWERBY. 
Hab. Australia (Strange). 
This pretty little semipellucid shell has something the 
appearance of a young Mactra. 

Species 318. (Mus. Brit.) 
TELLINA ANCILLA. 
subcompressd, postice super costam posticam concen- 
Tel. testd oblonga, alba, laevigata, 
tricé sulcatd, equivalvi, inequilaterali ; latere postico 
brevi, attenuato, flecuoso, biangulato, ante angulos 
depresso ; margine subexcavato; latere antico pro- 
ducto, rectiusculo. 
THE HANDMAID TeLLINa. Shell oblong, white, smooth, 
rather compressed, concentrically striated upon the 

rib, equivalve, inequilateral; posterior side short 
attenuated, flexuous, with double angle, depressed 
in front of the angle, with margin excavated; ante- 
rior side produced, rather straight. 
Hantry, Pro. Zool. Soc. 1844. 
Hab. Lord Hood’s Island. 
Tellina assimilis, resembling this species in general form, 
is not suleated at the posterior end. 

Species 319. (Hig. a, 4, Mus. Brit.) 
TELLINA CRASSULA. el. testa oblique 
epidermide solidad indutd, equivalve, 
ovata, crassa, 
valde inequi- 
laterali, compressiusculd, intus puncticulatda ; dentibus 
cardinalibus parvis, lateralibus nullis; latere pos- 
tico brevissimo, truncato; latere antico amplo, ob- 
liquo. 
THE LITTLE TELLINA. 
thick, covered with a solid epidermis, 
THICK Shell obliquely ovate, 
equivalve, 
very inequilateral, rather compressed, puncticulated 
within; cardinal teeth small, no lateral teeth; pos- 
terior side very short, truncated ; anterior side full, 
oblique. 
Desuayes, Pro. Zool. Soc. 1854, p. 354. 
Hab. Arctic Seas. 
The obliquity of form and punctured inner surface are 
the distinguishing peculiarities of this species. 

Species 320. (Mus. Brit.) 
TELLINA MAZzATLANICA. 
plend, lavigatd, equivalvi; latere postico sublrigono, 
Tel. testd ovato-oblonga, alba, 
brevi, radiatim unisulcato; margine dorsali declivi, 
terminali truncato, infra acuminato; dentibus cardina- 
libus nuillis, ligamento parvo, prominente. 
Tue Mazatnan TrLLINA. Shell ovate-oblong, white, 
full, smooth, equivalve ; posterior side subtrigonal, 
short, with a radiating groove; dorsal margin sloped, 
end truncated, acuminated below; cardinal teeth 
none, ligament small, prominent. 
Desnayes, Pro. Zool. Soc. 1854, p. 359. 
fab. Mazatlan. 
October, 1868. 
