48 Zoological Society. 



is longer and less sloping than in that species, forms an angle with 

 the straight and direct anterior margin. 



Tellina Culter. Tel. testd parvd, ovatd, inaquilaterali, tenuius- 

 culd, convexdy nitidd, intus extusque aurantio -rosed, Icevigatd ; 

 margine ventrali antice arcuato, postice sursum acclivi ; dorsali 

 antice magis minusve convexo satisque declivi, postice recto et valde 

 declivi ; latere antico producto, ad extremitatem obtuse rotundato ; 

 postico acuminato ; natibus acutis ; Ugamento vixprominulo ; flexurd 

 ventrali obsoletd; cardine dente laterali antico parvo, approxi- 

 mato. Long. 0*35 ; lat. 0-55 poll. 

 Hab. Cagayan, province of Misamis, Mindanao ; twenty-five fa- 

 thoms, sandy mud. 



This species is closely allied to the tenuis of our own shores, but 

 may be distinguished by its acuminated extremity. In young speci- 

 mens there are indications of concentric striae near the front of the 

 ventral margin. 



Tellina Corbuloides. Tel. testd subovali, incequivalvi, solidd, sub- 

 ventricosd, sublcevigatd, roseo-incarnatd (intus plerumgue aurantio- 

 rubrd) ; margine ventrali sinistra valvules, ultra marginem convex- 

 iusculum alterius,prominente ; latere antico breviore, obtuse acumi- 

 nato ; extremitate posticd rotundatd; ared dorsali posticd in 

 adultis subplanulatd ; natibus obtusis ; flexurd ventrali distinctd ; 

 cardine dente laterali, parvo, approximate, antico. 



Var. Testd extus intusque candidd. Long. 0*80 ; lat. 1*20 poll. 



Hab. Catbalonga, isle of Samar ; ten fathoms, soft mud. 



The general appearance of this shell gives us the idea of a Corbula. 

 It is covered when fresh with a thin fugacious epidermis, which re- 

 flects the most brilliant prismatic colours. 



Tellina Cycladiformis. Tel. testd parvd, rotundato -subtrigond, 

 tenui, ventricosd, intus extusque incarnatd aut pallide rosed, sub- 

 lcevigatd ; margine ventrali convexo ; dorsali utrinque declivi, con- 

 vexiusculo ; latere antico rotundato et paullb breviore ; extremitate 

 posticd obtuse subangulatd ; Ugamento prominulo ; flexurd costdque 

 umbonali obsoletis ; cardine dente laterali parvo, approximate, an- 

 tico. Long. 0-20; lat. 0-25. 



Hab. St. Nicholas, Zebu. 



Not unlike pisiformis, but destitute of oblique strise. 



Tellina insculpta. Tel. testd oblongo-elongatd, solidiusculd, com- 

 pressd, (Equilaterali, extus intusque candidd; sulcis confertis con- 

 centrice exaratd, striisque tenuissimis radiantibus (prtesertim pos- 

 tice) decussatd ; margine ventrali elongato, subrecto ; dorsali 

 utrinque subrecto, subdeclivi ; extremitate posticd subbiangulatd ; 

 flexurd ventrali distinctd; cardine dente laterali quamplurimum 

 approximate, antico. Long. 1 ; lat. 2 poll. 

 Hab. Chiriqui, West Columbia ; sandy mud, three fathoms. 

 This unique and elegant shell possesses the shape and general ap- 

 pearance of a Psammobia. The single anterior lateral tooth is so 

 close to the primary ones, that the hinge appears to be composed of 



