28 



The embryonic shell of this species is caducous ; it has been figured, however, by Fol ') 

 and by Pelseneer "). Like the latter I have seen it on an adult specimen, but as may be seen 

 from the figure (PI. I, fig. 17), I remarked two constrictions behind the partition, vvhich 

 separates the embryonic portion from the rest of the shell. 



Troschel (see the list of synonyms) has described and figured two "species", which to 

 my opinion must be referred to Clio striata. Both these forms are young stages. Troschel 

 noted in " Creseis phaeostonia' the anus on the right side, but from his description it may be 

 inferred, that he has mistaken the genital duet (if this really exists already in such young 

 forms) for an intestine. 



Subgenus Styliola Lesueur. 

 1825. Styliola Lesueur, in: DE Blalwille, Manuel de Malacologie, p. 655. 



4. Clio (Styliola) subuia (Qoy and Gaimard). 



1825. Styliola recta Lesueur, in: DE Blainville, Manuel de Malacologie, p. 655 (name only). 



1827. Cleodora subiila Qoy et Gaimard, Observations Zoologiques faites a bord de l'Astrolabe, 



etc, Ann. d. Sc. Nat., sér. i, vol. X, p. 233, pi. VIII Z?, figs. i — 3. 



1828. Creseis spuiifera Rang, Notice sur quelques Mollusques nouveaux, etc, Ann. d. Sc. 



Nat-, sér. i, vol. XIII, p. 313, pi. XVII, fig. i. 



1828. Creseis subuia Rang, Ibid., pi. XVIII, fig. i. 



1836. Hyalaea subuia d'Orbigny, Voyage dans l'Amérique meridionale, vol. V, p. 119, 



pi. VIII, figs. 15 — 19. 

 1850. Styliola subuia Gray, Catalogue of the MoUusca in the collection of the British Museum, 



prt. II, Pteropoda, p. 17. 

 1852. Cleodora subulata Souleyet, Voyage de la Bonite, Zoölogie, vol. II, p. 192, pi. VIII, figs. 5 — 9. 

 1852. Styliola subulata Fischer, Manuel de Conchyliologie, p. 437. 



1888. Clio (Styliola) subuia Pelseneer, Chall. Rep. LXV, p. 57. 



1889. Cleodora (Styliola) subulata Dall, in Buil. U. S. Nat. Mus., vol. XXXVII, p. 80. 



Living animals: 



Stat. iio. 4° 34' N., 122° o' E. 12 spec. 



Stat. 128. 4° 27' N., I25°25'.7E. i spec. 



Stat. 148. 0° iy'.6 S., 129° i4'.5 E. i spec. 



Stat. I77''. 2° 30' S., 129° 28' E. 3 spec 



Stat. 185. 3° 20' S., I27°22'.9E. I spec. 



Cho subiila has been recorded by the Siboga Expedition only from the Celebes Sea and 

 the Ceram Sea. It does not seem to be very abundant. 



Subgenus Clio Linné. 



1767. Clio Linné, Systema Naturae, i2'li ed., p. 1094. 



18 10. Cleodora Péron et Lesueur, Histoire de la Familie des Mollusques Ptéropodes, Ann. 

 Mus. Hist. Nat. Paris, vol. XV, p. 66. 



1829. Balantinin Anonymous, Journ. Roy. Inst., vol. XV, p. 220. 



1) Sur Ie développeraent des Ptéropodes, Arch. d. Zool. Exp., sér. i, vol. IV. 



2) Challenger Rep. LXV, p. 55, pi. 11, fig. 3. 



