41 



From this collection I mention a single shell (Stat. 102) which exhibits some variations 

 (PI. II, figs. 34 — 35). It is much more flattened than any other specimen-, the transverse grooves 

 on the ventral side are less distinct, and the terminal point is almost straight. 



6. Cavolinia globitlosa (Rang). 



1850. Cavolina globiilosa Rang, in: Grav, Catalogue of the Mollusca in the collection of the 



British Museum, prt. II, Pteropoda, p. 8. 

 1850. Cavolina pisiun Mprch, Catalogus conchyliorum quae reliquit KjERULF, p. 32, pi. I, fig. 7. 

 1852. Hyalaea globulosa Rang, in: SoULEYET, Voyage de la Bonite, vol. II, p. 142, pi. IV, 



figs. 20 — 24. 

 1 888. Cavolinia globulosa Pelseneer, Chall. Rep., LXV, p. 81. 



Living animals: 



Stat. 96. Pearl-bank, Sulu Archipelago, i spec. 



Stat. 143. 1° 4'. 5 S., 1 27° 52'. 6 E. I spec. 



Stat. 144. Damar Island. i spec. 



Stat. 177'. 2° 30' S., 1 29° 28' E. I spec. 



Empty shells: 



9° 3'.4 S., ii9°56'.7E. 4 spec. 



10° 22'. 7 S., i23°i6'.5E. I spec. 



7° o' S., 120° 34'. 5 E. I spec. 



o°34'.6N., 119° 8'.5 E. 12 spec. 



5°43'.5N., ii9°4o' E. i spec. 



6° 4'. iN., 1 20° 44' E. 7 spec. 



o°23'.8N., 1 27° 29' E. I spec. 



o°ii' ' S., 127° 25' E. 3 spec. 



1° o'.4 S., i27°25'.3E. I spec. 



o°i2'.6S., 1 29° 48' E. 2 spec. 



2° 40' S., I28°37'.5E. 10 spec. 



6° 24' S., 1 24° 39' E. 5 spec. 



5° 54' S., I32°56'.7E. I spec. 



This species too has been recorded from many stations. The brown colour on the front 

 part of the ventral side has quite disappeared in some specimens, which in other respects do 

 not exhibit any difference with the other shells. From the literature on this species it may be 

 inferred, that this species does not occur in the Atlantic. After Boas and Pelseneer, it has 

 been stated by Peck ^) and Smith "'). Pfeffer ^), Munthe *) and Locard °), however, have noted 

 definite localities. It seems extremely rare in this ocean. 



7. Cavolinia longirostris (Lesueur). 



1821. Hyalaea longirostris Lesueur, in: DE Blainville, Diet. d. Sc. nat., vol. XXII, p. 81. 

 182 1. Hyalaea ecaudata Lesueur, Ibid., p. 82. 



l) Proc. U. S. Nat. Mus., vol. XVI, p. 452. 

 2; Proc. Zool. See. 1890, p. 254. 



3) Abh. Natuiw. Vev. Hamb., p. 84. 



4) Pterop. i Ups. Un. Zool. Mus., Bih. till K. Sv. Vet-akad. Handl., Bd. 13, afd. IV, n" 2, p. 25. 



5) Exped. Sc. Travailleur et Talisman, MoUusques testaces, t. I, p. 10. 

 SIBOGA-EXPEDITIE LII. 



