312 TELLINIDiE. 



edlj, and occasionally much, the longer ; its dorsal edge not 

 greatly declining, and becoming convex or subarcuated as it 

 recedes from the rather prominent beaks : its extremity well- 

 rounded both above and below. Posterior side truncated at its 

 narrowed termination, the upper angle rather the more project- 

 ing ; its dorsal slope moderate or considerable, retuse or incurved. 

 Ligament very large, prominent, of an ashy yellowish brown. 

 Umbones eroded (in these examples). Inside with radiating 

 wrinkles ; front muscular impression slightly lunate, moderately 

 large ; hinder scar small, rounded, reniform ; palleal sinus short, 

 rounded at the apex ; margins acute. Length an inch and a 

 sixth : breadth five-sixths of an inch. 



In reference to these shells, Dr. Fleming writes, " I believe I 

 got them as specimens of Tellina fragiUs of Pennant, and from 

 Plymouth. This was my conviction at the time, but the founda- 

 tion of it I cannot now illustrate. Since the publication of the 

 ' British Animals,' I have repeatedly thought they had an out- 

 landish character." 



T. PISIFORM IS, Linnseus. 



TcUi7ia pisiformis, Linn. Syst. Nat. cd. 12, p. 11 20. — Linn. Trans, vol. viii. p. 67. 

 TuRT. Conch. Diction, p. 178. — Spengler, Skrivt. Nat. 

 Selskab. Kioben. vol. iv. pt. 2, p. 117. — Wood, General 

 Conch, p. 194. — Dillw. Recent Shells, vol. i. p. 102. — 

 IIanlev, in Sow. Thesanr. Conch, vol. i. p. 2G1, pi. bG, f. 30. 

 — Philippi, Neu. Conch. Tellina, pi. 4, f. 7. 



Cardium discors, Montagu, Test. Brit. p. 84. 



Strigilla pisiformis, TuRTON, Dithyra Brit. p. 119. 



Lmina ,, Flem. Brit. Anim. p. 442. — Brit. Mai-ine Conch, p. 7G. 



A West Indian shell, introduced as British with hesitation hy 

 Montagu, who picked a single dead specimen from the sand of Fal- 

 mouth liarhour. As this example is no longer to he found, and 

 the Card, discors is not so minutely defined as to determine whether 

 it belongs to the pale variety of pisiformis, or is the flexuosa of Say 

 (J. Acad. N. S. Philadelph. vol. ii. p. 303^, wherein the oblique 

 strice change their directions several times at the jwsterior termina- 

 tion, it is assigned, with some little doubt, to the former. 



