SUPPLEMENT. 183 



P. 311, 1. 3 from top, for "costatus" r. ^' sulcatusj^ 



P. 311. — ASTARTE SULCATA. 



Body yellowish or pale orange, with a tinge of fleshcolour : 

 mantle slightly grooved lengthwise at the edges, which are 

 thickened and plain ; there are a few smaU white tubercles at 

 the posterior side : foot tongue-shaped, pale yellow : gills deli- 

 cately pectinated. 



Typical. N. of Hebr., 170-550 f. (C. and T.). P. Norway 

 (Sars and others); Antwerp Crag (Nyst) ; Messina (Seguenza) ! 

 E. Loffoden I., 300 f. (Sars) ; Hveen, Denmark ((Ersted) ; 

 Cherbourg (Recluz). Var. Scotica. P. Norway (Sars). E. 

 Loffoden L, 250 f. (Sars) ; Brittany (Eecluz); Toulon (Sou- 

 leyet). Var. elliptica. P. Scandinavia, Canada, and U. S. 

 E. Labrador (Packard). A form intermediate between this 

 variety and the type has been found in a fossil state at Belfast 

 by Mr. A. Bell, and living in the Paroe Isles by Sysselman 

 Miiller. Var. incrassata. P. N.W. Germany (Philippi); Italy 

 (Brocchi and others). 



P. 315. A. COMPRESSA. 



Body yellowish or pale orange : mantle slightly lineated to- 

 wards the edges, which are thickened, of a darker hue, and 

 minutely tuberculated on the posterior side: foot tongue- 

 shaped, yeUowish-brown. 



E. Vancouver's I. (P. Carpenter, as A. compacta). Var. 

 glohosa. N. of Hebr., 530 f. (C. and T.). P., with var. striata, 

 Siberia, Labrador, Canada, and U. S. This species is Venus 

 Montagui, Dillwyn. 



P. 318. — A. TRIANGULARIS. P. Antwerp Crag (Nyst, as A, 

 minuta) ; N.W. Germany (Philippi, as A. Icevigata) ; Monte 

 Mario (Conti, as Cyclina undata) ! E. Brittany (Recluz) ; 

 Loire- Inferieure (Cailliaud) ! 



P. 319. — A. crebricostata. N. of Hebr., 550 f., in "cold ^-rea" 

 (C. and T.). P. Gardiner, Maine co. (Lyell). A. WarJiami, 

 Hancock. 



P. 320. — A. horealis. P. Greenland, Scandina\'ia, and N.E. 

 America. 



P. 322. — Circe minima. P. Antwerp Crag (Nyst, as Cy- 

 thereatrigona); Italy (Calcara and others). E. Bergen (Sars) ; 



