176 SEA-SHORE LIFE 



Crab, Horseshoe (Liinulus)— Arnold, A. F., Sea Beach at Ebb Tide, p. 295, PL 64. 

 Packard, A. S., Memoirs Boston Society of Nat. Hist., 1880. 



MOLLUSKS. 



Clam, Littleneck (Venus mercenaria) — Verrill & Smith, Invertebrate Animals of 

 Vineyard Sound, p. 65, PI. 26, Fig. 184, 1874. Kellogg, J. L., Bull. New 

 York State Museum, No. 71, Sept., 1903. 



Clam, Sandbar — (Siliqua costata) — Dall, W. H., Bull. U. S. National Museum, No. 

 37, PI. 53, Fig. 3, 1889 



Clam, Bloody (Argina pexata) — Davenport, C. B. and G. C, Introduction to Zoology, 

 p. 184. 



Ship Worm (Teredo) — Verrill and Smith, Invertebrate Animals of Vineyard Sound, 

 p. 90 (384), PI. 26, Fig. 183. Quatrefages, A. de, Annal Sci. Naturelles, 

 Tom XI, pp. 202-228, 1849. Hatschek, B., Arbeit Zoolog. Institut Univer- 

 sitat Wien, Bd. Ill, Heft 1, 1880. 



Scallop (Pecten in-adians) — Davenport, C. B., American Naturalist, Vol. XXXIV, 

 pp. 863-878, 1900. Also, Mark Anniversary Volume, 1903. 



Scallop, Arctic (Pecten islandicus) — Gould and Binney, Invertebrates of Mass., p. 

 198, Fig. 495. 



Snail, Sand-Collar (Limatia) — Verrill and Smith, Invertebrate Animals of Vineyard 

 Sound, p. 59 (353), PI. 23, Figs. 130, 133, 136. 



Snail, Salt Marsh (Melampusbidentatus) — Verrill and Smith, Invertebrate Animals 

 of Vineyard Sound, PI. 25, Figs. 169, 169a. 



Whelk (Fulgur)— Arnold, A. F., Sea 15e:ich at Ebb Tide, PI. I. 



Periwinkle (Littorina littorea) — Bum pus, H. C, Zoological Bulletin, Vol. I, 1898. 

 Bigelow and Rathbun, American Naturalist, March, 1903. 



Nautilus^Griffin, L, E , Memoirs of National Academy U. S., Vol. VIII, 1900. Dean, 

 Bashford, American Naturalist, Vol. XXXV, pp. 819-837. 



Giant Squid (Architeuthis princeps) — Verrill, A. E., Am. Journal of Science, 1874, 

 p. 158; 1875, pp. 123, 177, 213; 1876, p. 236; 1877, p. 425. Also, Transac- 

 tions of Connecticut Academy of Sciences, Vol. V, 1878-82. 



TUNICATES. 



Sea-Squirt (Ciona intestinalis) — Castle, W. E., Bidl. Mus. Compai-ative Zoologj', 

 Harvard, Vol. XXVII, 1896. Willey A., .Amphioxus and the Ancestry of the 

 Vertebrates, 1894. 



