Boone, Mollusca, Cruises of "Eagle" and "Ara," 1921-28 209 



Carinaria Lamarck, published in the Annales Museum d'Histoire Nat- 

 urelle Paris, volume XV, 1810. 



Distribution : Pelagic in the Mediterranean Sea. 



Material examined: One specimen caught in the dip-net, Monaco, 

 Mediterranean Sea, May 2, 1927, by the "Ara." Another specimen 

 from the same locality, May 14, 1927, broken. 



Color: Both shell and tissues are semitranslucent in life, showing 

 the internal organs. 



Remarks: C. mediterranea, swims upside down, that is, with the 

 ventral surface upward ; the foot takes the form of a fan-like fin. The 

 species is dioecious ; the female deposits a long chain of granular eggs 

 and has been known to deposit a string of a meter's length in a day. 



Technical description : Consult Vayssiere 's excellent presentation 

 of this species, in the Monaco Report, fascicule XXVI, p. 11, pi. 1, 

 figs. 1-10, pi. 2, fig. 17, 1904. The internal anatomy of mediterranea 

 has been very critically studied by several scientists, notably Cuvier, 

 Lesueur, Souleyet and Eydoux, Leukart and Gegenbaur. 



The single specimen taken by the "Ara" is quite large and con- 

 forms in every detail with M. Vayssiere 's description of the species. 



References: Carinaria mediterranea Peron and Lesuer, Ann. Mus. 

 Hist. Nat. Paris, vol. 15, p. 67, pi. 2, fig. 15, 1810.— Vayssiere, 

 Res. Campag. Sci. Monaco, Fasc. XXVI, p. 11, pi. 1, figs. 1-10, 

 pi. 2, fig. 17, 1904. — Gegenbaur, C, Untersuchungen uber Ptero- 

 poden und Heteropoden, Leipsig, p. 37, 1854. 



Pterotrachea lophira Delle Chiaje, Mem. Anim. Senza Vert., vol. Ill, 

 p. 161, in atlas as P. lophyra, pis. 14, 15, 41, 1823-29. 



Carinaria vitrea O. G. Costa, Ann. Sci. Nat. Paris, t. XVI, ser. I, p. 

 107, pi. 1, 1829. 



Carinaria cymoium Lamarck, Anim. sans Vert. Mollusques, ed. II, 

 vol. XI, p. 381, 1840. — Cuvier, G., Regne Anim., Mollusques par 

 Deshayes et H. Milne Edwards, Paris, t. I, p. 101, atlas II, pi. 38, 

 1840-1855. 



