2l6 SMITH : ON THE GENUS ASTARTE. 



1843. Astarte quadrans, id. Journ. Bost. Soc. Nat. Hist, 



vol. iv., pp. 320 and 345, pi. xvi., f. 2. 

 1843. A. quadrans Migh. Bost. Jour. Nat. Hist., vol. iv., p. 319. 

 1851. A. quadrans Stim[;son. Shells of New England, p. 18. 

 1851. A. portlandica, id., I.e., p. 18. 

 1854. A. quadrans Sowerby. Thes. Con., vol. ii., p. 782^ 



pl. clxvii., f. 5. 

 1870, A. quadrans Gould. Invert. Mass., ed. 2, p. 123, f. 434. 

 1870. A. portlandica, id., I.e., p. 127, f. 441. 

 1872. A. quadrans Verrill. Amer.Jour.Sci. and Arts, vol, iii., 



p. 287. 

 1874. A. quadrans Sowerb)'. Con. Icon., vol. xix., f. 8. 



Habitat. — Various localities on the east coast of the United 

 States. 



I am unable to distinguish the A. portlandica of Mighels, 

 from this species. Of the two characters especially referred to 

 by that author, namely, its extraordinary obliquity and the livid 

 color of the interior, the former is unquestionably possessed by 

 some examples of this species. The latter peculiarity seems to 

 me possibly or rather probably due to discoloration produced by 

 retention in the stomach of a haddock from whence the single 

 shell described was extracted. 



Jeffreys (Annals Nat. Hist., Oct., 1872, p. 239), erroneously 

 I think, considers this a variety (tiafia) of A. castanea. Although 

 I have not been able to compare it with young specimens of that 

 species, still on placing it side by side with the umbonal portion 

 of half grown specimens it appears to me different in form, being 

 shorter from the beak to the opposite or ventral margin. 



II.— ASTARTE BOREALIS (Chem.) Schumacher. 

 1776. Tellina atra Pallas (not described). Middendorff, Mai. 

 Rossica, vol. iii., p. 47. 



J.C, iii., Tuly, 1881 



