TELLINA.—Piate XXXV. 
sinistra convead, marginibus dorsalibus valde declivibus, 
acutis, spinis triangularibus ornatis, inter valvulas pro- 
fundé excavatis, margine ventrali convexo, rotundo ; 
latere postico flecuoso, rostrato, truncato ; latere antico 
ad terminum acuminato, umbonibus elevatis, acutis, 
dentibus lateralibus remotis. 
Burner's Tpruina. Shell trigonal, compressed, white, 
subequilateral, concentrically striated or nearly 
smooth, wrinkled towards the umboes and as far as 
the middle with large concentric waves, right valve 
concave without, left valve convex, dorsal margins 
very sloping, acute, adorned with triangular spines, 
deeply excavated between the valves, ventral margin 
convex, rounded; posterior side flexuous, beaked, 
truncated; anterior side acuminated at the end, 
umboes elevated, acute, lateral teeth remote. 
Brop. and Sowersy, Zool. Journ. vol. iv. p. 362. t. 9. 
f. 2 
+ We 
Hab. West Columbia. 
Extreme specimens of the two varieties are so different, 
that we might very naturally be induced to describe them 
as distinet. species, but intermediate specimens occur, 
which are partly striated and partly undulated. 


Species 200. (Mus. Cuming in Brit.) 
Tevuina Deswayesit. el. testd subrosed, elongata, sub- 
aquilatera, compressa, liris elevatis subdistantibus con- 
centricis rugatd, marginibus dorsalibus superne de- 
pressis, declivibus, regulariter et subdistanter spinosis ; 
latere postico subflecuoso, angulato, rostrato, ad ter- 
minum truncato, ad angulum radiatum spinis parvis 
sublaminiferis instructo, umbonibus parvis, subele- 
vatis, margine ventrali rectiusculo, versus angulum 
posticui concavo. 
DesHayes’ TELLINA. Shell rather pink, elongated, sub- 
equilateral, compressed, wrinkled concentrically with 
raised, rather distant ridges, dorsal margins depressed 
at the top, sloped, regularly and rather distantly 
spinose ; posterior side rather flexuous, angular, 
beaked, truncated at the end, set at the radiating 
angle with small sublaminar spines, umboes small, 
somewhat elevated, ventral margin rather straight, 
concave towards the posterior angle. 
Han.py, Pro. Zool. Soc. 1844. 
Hab. Red Sea. 
Rather more solid than Zedlina Cumingii and Tellina 
planispinosa, with other differences explained in our ob- 
servation on the latter species. 

