160 



1 . Strigilla disjuncta, n. s. S. testą satis magna, alba, tenui, 

 planata ; incBąuilaterali, postice jjroducta ; marginibus dor- 

 salibus subrectis, ad angidam 120°, aliis bene arcuatis ; lineis 

 incrementi vix monstrantibus ; lineis undulatis exiUiinis, antice 

 concentricis, umbones versus ascendentibus, sinu angustiore ; 

 dein ad marginėm ventralem rapide descendentibus ; dein subito, 

 angido acuto, circiter 20° liostice rursus ascendentibus ; lineis 

 angularum in valva utraque haud convenientibus ; margine 

 postico sinuato, sculptura postea fortiore ; margine antico 

 quoque sinuato ; himtla distincta, sinuata ; ligamento sub- 

 elongato ; dent. card. valva altera uno parvo et uno magno 

 bifido ; altera uno parvo bifido ; dent. lat. acutioribus, haud 

 distantibus. 



Long. 1-35, lat. 1-54, alt. -54 poli. 



Hab. In Sinu Panamensi ; legit T. Bridges. (Mus. Cuming. sp. 

 duo.) 



Allied to S. sincera, Hanl. ; remarkable for its large size and rery 

 fine markings, and named from the lines of markings in the two 

 valves not agreeing at the edges. 



2. Tellina Deshayesii, n. s. T. testą "T. exili" simili, aed 

 muito magis inceųuilaterali ; ligamento solido ; postice vix ros- 

 trata. 



Long. -56, lat. -9, alt. -26 poli. 



Hab. In Sinu Panamensi; legit T. Bridges. Sp. un. in Mus. 

 Cuming. 



3. ? ScROBiCTJLARiA viRiDO-TiNCTA, U. S. ? S. testa " 1 S. pro- 

 ductae" simili; sed latiore, ovali, tenuiore, magis planata, 

 a7itice haud producta, alba ; umbonibus viridi tinctis. 



Long. 1-42, lat. 205, alt. -65 poli. 



Hab. In Sinu Panamensi, una cum 1 S. producta ; legit T. Bridges, 

 Sp. un. in Mus. Cuming. 



Another of the species intermediate betvveen Tellina and Serobi- 

 cularia proper, and apparently nearer to the former genus. 



4. Semele PLANATA, U. S. S. testa subtriangidari, margine 

 ventrali valde excurvato ; cinereo-albida, circa luiiulam mini- 

 mam et aream ligamenti roseo eleganter penicillata, intusflavido 

 tincta ; rugis concentricis subdistantibus, irregularibus, parum 

 elevatis ; striulis creberrimis radiantibus, valde irregularibus, 

 rugulosis sculpta ; postice maxime sinuata ; valva una magis 

 quam altera planata ; fossa ligamenti recta, angusta ; sinu 

 pallii modico, lato. 



Long. 1-4, lat. 1-56, alt. -47 poli. 



Hab. In Sinu Panamensi ; legit T. Bridges. Sp. un. in Mus. 

 Cuming. 



DifFers from S. jmncfata, Sow., in the absence of punctures, in the 

 triangular dorsal margins, uneąual flattening of the valves, straight 

 narrow hinge-pit, and the much smaller size of the pallial sinus. 



