190 CUBOIDES VITREUS. 



from the Indian Ocean represented an Indian, distinct from the Atlantic, species, 

 the capture, by Bedot ('96), by the "Siboga" (Lens and Van Riemsdijk, :08), 

 and by the "Albatross" of Indo-Pacific specimens indistinguishable from material 

 from the Tropical Atlantic, shows Chun's view to be ill founded. Chun, '92, 

 p. 112, though expressly stating that C. vitreus is the Eudoxid of his Halopyramis 

 adamantina, calls "Die freien Eudoxiengruppen" Cuboides adamantina. But 

 this is contrary to usage. 



Cuboides vitreus Quot and Gaimard. 



Cuboides vitreus Qdoy and Gaimard, '27, p. 19, pi. 2E, figs. 1-3. Eudoxid. 



Cymba cuboides Eschscholtz, '29, p. 135. 



Abyla vogtii Huxley, '59, p. 46, pi. 2, fig. 3. 



Cuboides vitreus Huxley, '59, p. 63, pi. 4, fig. 5. Eudoxid. 



Halopyramis adamantina Chun, '88, p. 1155; '92, p. Ill, taf. 10, fig. 10, taf. 12; Bedot, '96, p. 369; 



Lens and Van Riemsdijk, :08, p. 7. 

 Cuboides adamantina Chun, '88, p. 11.56; '92, p. 112; Bedot, '96, p. 369; Lens and Van Riemsdijk, 



:08, p. 8. Eudoxid. 

 Cuboides crystallus Haeckel, '88a, p. 53; '88b, p. Ill, pi. 42. Eudoxid. 

 Cuboides vogtii Haeckel, '88b, p. 111. 

 Cymba vogtii Haeckel, '88a, p. 34; '88b, p. 138. 

 Cymba crystallus Haeckel, '88a, p. 34; '88b, p. 138, pi. 41, 42. 

 Enneagonum hyalinum Schneider, '98, p. 91 (non Quoy and Gaimard, '27). 



The following names may perhaps belong to this species; they are all 

 founded on the description of Enneagonum bj^ Quoy and Gaimard: 



? Enneagonum hyalina Quoy and Gaimard, '27, p. 18, pi. 2D, fig. 1-6; Blainville, '34, p. 133, pi. 4, fig. 



5b; Lesson, '43, p. 455. 

 ? Diphyes enneagonum Quoy and Gaimard, '34, p. 100, pi. 5, fig. 1-6. 

 ? Cymba enneagonum Eschscholtz, '29, p. 134. 



The polygastric generation was taken at Stations 4613, 4617, 4619, 4634, 

 4646, 4652, 4663, 4667, 4669, 4673, both on the surface and in hauls from 300 

 fathoms to surface. The series consists of thirty-four well-preserved specimens 

 ranging in height from 3-10 mm. 



The Eudoxid was taken at Stations 4661, 4663, 4667, 4669, 4673, 4676, 

 4699, 4743, both in surface and in 300 fathom hauls. There are fifty-six well- 

 preserved specimens, from 3-5 mm. high. 



This species has been figured and described in such detail by Chun ('92) 

 that no account is necessary here. The present series is indistinguishable from 

 his specimens from the Canary Islands, and from West Indian examples which 

 I have studied. The largest example of the polygastric stage, measuring 10 mm. 

 in height by 8 mm. in breadth, is rather larger than the "Siboga" specimens 

 (7x5 mm.), and approaches the specimens recorded by Chun (10 mm.). It 

 is evident, then, that there is no distinction in size between Cuboides from the 



