252 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. iS. 



me those smooth, spindle-shaped bodies are never present in general 

 perisome. 



Habitat. — From the Gulf of Panama to the Gulf of California 

 (Ludwig, 1894; Clark, 1913); Flores and Banda Seas (Sluiter, 1901); 

 Suruga Bay. 



46. MOLPADIA ANTARCTICA (TMel). 



Trochostoma antarcticum Theel, Challenger Holothurioidea, -pt. 2, 1886, p. 44, 

 pi. 2, figs. 7a-e; Blake Holothurioidea, 1886, pp. 16, 17. — Augustin, Japan- 

 ische Seewalzen, 1907, pp. 35-36, text-figs. 22a-c. 



Molpadia antarctica Clark, The Apodous Holothurians, 1907, pp. 32, 168. 



Station 5074. One specimen. 



The specimen, which is 33 mm. in length inclusive of a very short 

 tail, agrees very well with Theel's specimens. Phosphatic corpuscles 

 are entirely absent, while tablelike deposits are undergoing change 

 of color, as Theel found in the Blake specimens. Number of holes 

 in disk usually 6, but may vary from 3 to 10. Diameter of disk 

 120-250//, with a mean of 185/z, height of spire 150/*. There is found 

 another kind of deposits, which are minute and have a solid spire 

 ending in three hooks. Tables of caudal appendage are smaller, with 

 a disk of 40-110/* in diameter, and a very robust and spinose spire 

 consisting of 3-5 pillars. 



Habitat— Chile (Theel, 1886; Clark, 1907); between Florida and 

 Cuba (Theel, 1886); off Alexander Land, Antarctic (Herouard, 

 1901) ; Okinose, Sagami Sea (Augustin, 1908) ; Suruga Bay. 



47. MOLPADIA DIOMEDL® (Mitsukuri). 



Ankyroderma diomedise Mitsukuri, Actinopodous Holothurioidea, 1912, pp. 265- 

 267, pi. 8, fig. 77, text-fig. 54. 



Station 5073. One specimen. 



Of the whole collection this was the only specimen which Professor 

 Mitsukuri was able to examine and describe. I may here make some 

 additional statements. 



Color yellowish-brown all over. Deposits are abundant and well 

 developed, so that the integument is quite rough to the touch. Racket- 

 shaped bodies are 550-780/* long with a straight, smooth handle. 

 Usually 7 or 8 of them together form a rosette, but the number may 

 vary from 6 to 10. Anchors measure 400-460/* in length and are in 

 most cases broken off. Each of the arms bears 4 teeth on the outer 

 side. Base of the anchor is 70-90/* in diameter and is perforated 

 with 4 primary, 4 larger, and several minute peripheral holes. Table- 

 like bodies are very robust with a disk expanded in 2, 3, or 4, direc- 

 tions and perforated with numerous holes. Spire is tall, about 350/*, 

 consisting of 4, but rarely 3 or 5, pillars with more than 10 crossbeams 

 and fine dentition along the outer side. Including the larger central 



