204 Bulletin, Vanderbilt Marine Museum, Vol. TV 



Material examined : Four specimens, pelagic in the Mediterranean 

 Sea, 10 miles S. by E. of Monaco Harbor, April 19, 1927, collected by 

 the "Ara." Two specimens, St. Raphael, bearing S. S. E., 9 miles, S. 

 of France, 400 fms., March 23, 1927. 



Technical description: Consult M. Vayssiere's masterly report of 

 this species (Res. Campag. Sci. Monaco, Fasc. XL VII, p. 174, pi. XIII, 

 figs. 291-303; pi. XIV, figs. 304-322, 1915). The "Ara" specimens 

 conform in all essentials with the above-mentioned diagnosis. 

 References: Cymbulia peronii de Blainville, Diet. Sci. Nat., t. XII, 

 p. 333, pi. 69, fig. a, 1818.— Pelsener, Rept. Voy. "Challenger" 

 Zool., vol. XXIII, Heteropoda, part 2, p. 98, 1888. — Delle Chiaje, 

 Anim. sans Vert. Reg. di Napoli, atlas, pi. 32, fig. 1, 1823-29. — 

 Vatssiere, Encycl. Sci., Mollusques de France, t. I, p. 179, 1913 ; 

 Res. Campag. Sci. Monaco, Fasc. XLVII, Mollusques Euptero- 

 podes, p. 174, pi. XIII, figs. 291-303, pi. XIV, figs. 304-322, 1915 

 (complete diagnosis with snyonymy) ; ibid, Fasc. LXXI, Mol- 

 lusques Heteropodes et Eupteropodes, p. 20, 1927. 



TECTIBRANCHIATA. 



Family : TETH YMELIBIDAE Bergh. 



Genus: TETHYS Linne. 

 Tethys dactylomela (Bang.). 



Plate 128. 



Name : Sea-Hare or Sea-Cat. 



Type : Rang 's type came from Saint Yago de la Praya, Cape Verde 

 Islands, and was first deposited in the ''Cabinet d'Anatomique du 

 Jardin des Plantes, No. 12 " ; later placed in the Paris Museum. 



Distribution: This species, originally described from the tropical 

 eastern Atlantic has later been found abundantly in the West Indian 

 region. Verrill and Heilprin each record it from Bermuda. 



Material examined : One specimen, taken off American Shoal Light, 

 Florida, 5 fms., March 23, 1924. 



Color : In life this species is exquisite, having a rich velvety oliva- 

 ceous drab ground color, marked all over with circles and streaks of 

 velvety black and with the margins of the swimming lobes tinged with 

 violet. Its gracefulness of motion, effected by a gentle undulation of 

 the lateral swimming lobes, is indescribably lovely. 



