208 "TERRA NOVA" EXPEDITION. 



IV.-DESCRIPTIONS OF SPECIES. 



EUPTEROPODA. 

 FAMILY CAVOLINIIDAE. 



GENUS CAVOLINIA, Gioeni, 17M Abildgaard, 17!U. 



I. <_ 1 m\>linia lonyirostris (Lesueur). Figs. 1-2. 



ii luiiginixtrls, Lesueur (after Blainville), 1S21. 

 liwbtttii, d'Orb, 1836. 

 Cavoli-nia longirostris, Gray, 1850. 

 Hijalava longirostris, Lesueur (in Souleyet, 1852). 

 niiijuldtn, Souleyefc, 1852. 

 ,, fissirostris, Benson, 1861. 



,, ubtiisn, Sow. 1877 (in Reeve, Conchol. Icon, tome xx, fig. 8). 



Cavolinin longirostris, P. Pelseneer, 1888; Tesch. 1904; J. Meisenheimer, 1906; A. Vayssiere, 

 1913, 1915. 



New Zealand (off North end of). 



Station 92, two. Station 110, ten. 



,, 101 , one. ' 111, one. 



,, 106, three. ,, 118, one. 



,, 107, one. ,, 125, twelve. 



,, 108, one. ,, 126, forty-eight. 



., 109, fourteen. 129, four. 



Station 130, two. 

 ,, 131, nineteen. 

 ,, 137, three. 



138, two. 



141, two. 



The above hauls were all made at or near the surface. 



This seems to lie an almost cosmopolitan species, occurring in all seas between 40 N., 

 and 40 S. It has been observed exceptionally as far as 47 N. M. Vayssiere (1915, 

 p. 44) was unable to indicate the position of the caecum, having only had two examples 

 for examination. On dissecting the liver away the caecum was found at the 

 commencement of the intestine (Fig. l), The gonad (Fig. 2, B), accessory glands 

 (Fig. 2, A) and copula tory organ (Fig. 2, C) are also shown here. 



2. < 'iinif/u/ii <jtl>lxiftn, -Hang, 1836 (according to d'Orb.). 



Hyalaea flava, d'Orb., 1836. 

 Cavolinift. yilibosa, Gray, 1850. 

 Hi/alaen gibbosa, Souleyet, 1852. 



,, gegenbauri, Pfeffer, 1880. 



yibbosa, Boas, 1886. 



Cav. gibbosa, Tiberi, 1879 ; Locard, 1886 ; J. Tesch, 1904 ; J. Meisenlieimer, 1905 and 1906 ; 

 K. Bonnevie, 1913; A. Vayssiere, 1913 and 1915. 



Station 126, off North end of New Zealand, one. 



This is a warm water species avoiding the immediate neighbourhood of the equator 

 (Boas 1886, 'iVsrli. 11)04. .Meisenheimer, 1905). 



