mazatlan univalves 533 



Family PHILINID^. 



Genus SMAJIAGDINELLA, A. Ad. 



Voy. Samarang, App. p. 475 -.S. Sf A. Ad. Gen. vol. ii. p. 22. 

 Linteria, A. Ad. in 8o2u. Thes. Conch. 1850. — Woodw. Man. 



Moll. p. 182. 

 Glauconella, Gray, Fig. Moll. An. pt. iv. p. 95. — Fhil. Sandb. 



Conch, p. 230. 

 Thecaphorus, Nutt. nis. 



692. Smaeagdinella thecaphoba, (Nutt.) n. s. 



S. f. axiniformi, solidd, viridi, radiis ^j^itriSw^ olivaceis, 

 suhlcevi ; verfice juxta trientem totius longitudinis ; camera 

 solidissima,fidcro instrucid; labro postice valde prodttcto, acute 

 angulato ; inter cameravi angidamque olivaceo-fuscd, sinu lata, 

 haudj profunda ; camera valde extante, rotundatd, excavatd, 

 extus aperiente ; labio hand reflexo ; cicatricials muscularibus 

 conspicuis. 



The excellent generic name given by Mr. NuttaU to the shell 

 he found in the Sandwich Is. having unfortunately not been 

 published, and therefore not being entitled to priority, it is 

 here retained for a species diiFering considerably however from 

 the Polynesian type. In the solitary Mazatlan shell, the 

 chamber, instead of being a thin septum, not projecting, and 

 winding spirally round inside, with a sharp, ciecp sutviral sinus, 

 becomes a solid spoon-shaped process, supported on a stout 

 fi^crum from the inside, and looking remarkably like the liga- 

 nftntal cavity of AnatineUa, &c. This chamber is opeu to the 

 outside, but not within, and is separated from the very sharply 

 angled upper lip by a shallow darkly tinted sinus. The apex, 

 close to the junction of the chamber, is situated at about one« 

 third of the entire length. Long. '078, lat. "055. 



JBTaS.— Mazatlan ; 1 fresh sp. on Spondylus ; L'pool Col. 

 Tablet 2527 contains the specimen. 



