224 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



From S. senigma Ludwig this species differs only in having a visible 

 calcareous ring. S. crucifera Perrier, S. horridus Kcehler and Yaney, 

 S. robertsoni Yaney, and BatTiyplotes monoculus Skater are allied to 

 the present species, but in none of them have the fungiform papillae 

 been described, nor is the arrangement of the pedicels of the odd 

 ambulacrum similar to that in this species. The species is named 

 for Prof. Charles H. Gilbert of Stanford University. 



Habitat. — South of Totomi, Honshu. 



Type.— Cat. No. 34144, U.S.N.M. 



Genus BATHYPLOTES Ostergren. 



6. BATHYPLOTES MOSELEYI (Theel). 



Stichopus moseleyi Theel, Challenger Holothurioidea, pt. 2, 1886, pp. 165-167, 



pi. 10, figs. 19, 20. 

 Bathyplotes moseleyi Ostergrex. Zur Kenntnis der Synallactinse, 1896, p. 355. — 



Mitsukuri. Actinopodous Holothurioidea, 1912, pp. 31-35, text-fig. 7. 

 Synallactes moseleyi Perrier, Holothuries antarctiques, 1905, pp. 6-11, text-fig. A. 

 Synallactes f, sp. ? Augustix. Japanische Seewalzen, 190S, p. 20. 



Station 5029. One specimen. 



Station 5072. One specimen. 



Station 5091. Fifty-five specimens. 



Station 5092. Eighteen specimens. 



Station 5093. Two specimens. 



Station 5094. One specimen. 

 I can not find any generic difference between this species and 

 others of the genus. Indeed, the presence of numerous pedicels 

 along the odd ambulacrum is peculiar to the species, and Perrier 

 referred it to Synallactes on that account, while Mitsukuri proposed 

 to ereot a genus Ostergrenia. But I prefer to follow Ostergren's 

 original diagnosis of the genus, which covers the present species as 

 well as B. faUax Ostergren. The specimen reported by Augustin 

 from Misaki seems to me to be a macerated one of this species. 



Habitat. — West coast of Patagonia (Theel, 1886) ; between Xavarin 

 Island and Hoste Island (Perrier, 1905); various stations in Sagami 

 Sea and Uraga Channel (Augustin, 1908; Mitsukuri, 1912); Suruga 

 Bay; off Cape Terpyeniya, Sakhalin. 



7. BATHYPLOTES TIZARDI (Theel). 



Stichopus tizardi Theel, Knight Errant Holothurioidea, 1882, p. 696. 

 Bathyplotes tizardi Ostergren, Zur Kenntnis der Synallactinae, 1896, p. 354, 



pi. 13, figs. 36-43. — MrrsuKtJRi, Actinopodous Holothurioidea, 1912, pp. 35-39, 



text-fig. 8. 

 Herpysidia tizardi Perrier, Compt. rend. Acad. Sci., Paris, vol. 126, No. 23, 1898, 



p. 1665. 



Station 4959. One specimen. 



Station 4966. Two specimens. 

 There is no need to add further details to what is known about this 

 species. I may only mention a fact which seems to have some sig- 

 nificance in connection with the breeding habit of the animal. In 



