MUSEUM OF COMPARATIVE ZOOLOGY. 133 



margin ; within polished ; edges of the shell delicately denticulate ; sculpture 

 varying slightly in fineness in different specimens. Variety tinctum, with 

 indistinct rays and concentric waves of darker or lighter carmine and orange, 

 interior suffused with lemon-yellow, sculpture finer than in the common form. 

 The shell does not gape. Lon. 12.5 ; alt. 12.0 ; diam. 9.5 mm. 



Sigsbee, Station 50, 119 fms. ; U. S. S. Bache, April 22, 1872, 100 fms. ; 

 Barbados, 100 fms. ; Station 9, 111 fms. ; Station 26, 110 fms. ; Station 36, 

 84 fms. • Lat. 23° 18'. Lon. 89° 10', 84 fms. ; off Sombrero, 64-72 fms. ; west 

 of Florida, 50 fms. 



This very lovely shell is so abundant in the collection, that it seemed almost 

 impossible that it "?]iouid be undescribed ; but I have not been able to find any 

 description or figure that agrees with it. 



Syndosmya longicallis Scacchi. 



Tellina longicallis Scacchi, Not., p. 16, Tab. I. fig. 7. 



Erycina longicallis Phil., En. Moll. Sic, II. p. 8, Tab. XIII. fig. 7, 1844. (Fossil 



in Apulia.) 

 Abra longicallis Sars, op. cit., p. 74, Tab. 6, fig. 3 ; Tab. 20, fig. 4, 1878. 

 Ligula profundissima Forbes, Rej). iEgeau Inv., p. 191, 1843. 



Station 41, 860 fms., living. 



I cannot distinguish any characters by which this beautifully brilliant little 

 shell can be distinguished from that figured and described by Philippi. I 

 have not seen Scacchi's original paper. Forbes' description is too brief for 

 identification, but it seems likely that his name refers to this species as 

 claimed by Monterosato. 



Syndosmya lioica n. s. 



Shell allied to S. tenuis Midler and S. similis Philippi, thin, polished, short, 

 much inflated, white, with a yellowish or translucent epidermis, which some- 

 times gives it an opaline effect ; sculpture solely of concentric lines of growth, 

 which are accompanied by a different degree of translucency in the .shell, so 

 that many specimens show successive waves of more or less opacity and white- 

 ness contrasted with others more translucent, but there is no uniformity in the 

 number or extent of ^hese waves ; beaks inequilateral, nearest the posterior 

 end, which is slightly twisted to the right ; posterior slope short, steep ; poste- 

 rior end hardly angulated ; anterior slope long, less steep, the angle at the 

 beaks being about 100° ; anterior end rounded ; base produced and rounded, 

 especially before the beaks ; beaks and ligament not prominent ; cartilage nar- 

 row, elongated, teeth strong, distinct ; pallial sinus reaching nearly to the 

 anterior muscular scar, rounded in front ; margin smooth. Lon. 8.1 ; alt. 6.75 ; 

 diameter, 4.75 mm. 



Twenty miles west of Florida in 30 fms.; gff Sombrero in 54 and 72 fms.; 



