REPORT 03" THE PTEROPODA. 
105 
Cymbulia rachata (Quoy and Gaimard, 1 from Amboina). Figure 33 represents a 
somewhat advanced stage. Gegenbaur and Adams have recognised it as a Gleba. 
Cymbulia cirroptera, Gegenbaur, 2 from Messina. Lastly, Tiedemannia scyllee, 
Troschel, 3 and Tiedemannia charybdis, Troschel, 4 are also certainly young stages of 
Gleba, as indeed Troschel himself suspected. But in regard to all these young stages, 
observations are as yet too insufficient to enable one to determine with certainty the 
adult forms to which they belong. 
SUMMARY. 
As the result of the preceding survey of the system of the Thecosomata, forty-two 
species may be recognised, and these are distributed in the following manner : — 
Genera. 
Species. 
Limacina, .......... 
10 
Peraclis, ........... 
2 
Clio, subgenus Creseis, ........ 
4 
„ Hyalocylix , ....... 
1 
„ Styliola, ........ 
1 
„ Clio, s. str., ....... 
8 
Cuvierina, .......... 
1 
Cavolinia, .......... 
8 
Cymbulia, .......... 
2 
Cymbuliopsis, .......... 
2 
Gleba, 
3 
8 
42 
Of these forty- two species, there are only five which I have not been able to study 
myself, and only nine which have not been collected by the Challenger. 
1 Voyage de decouvertes de 1’ Astrolabe, Zoologie, t. ii. p. 375, pi. xxvii. figs. 33, 34. 
* Untersuchungen fiber Pteropoden und Heteropoden, p. 53, pi. iii. fig. 21. 
3 Beitrage zur Kenntniss der Pteropoden, Archivf. Naturgcsch., 1854, Bd. i. p. 219, pi. ix. figs. 12, 13. 
* Ibid., p. 220, pi. ix. figs. 14, 15. 
(bool, chall. EXP. PART LXV. 1887.) 
Ttt 14 
