18 PROCEEDINGS OF THE NATIONAL MUSEUM vol.81 



Genus ACANTHASCUS Schulze 



ACANTHASCUS PLATEI Schulze 



Acantluiscus platei F. E. Schulze, 1899, p, 45. 



Holotype.—JJ.S.^M. No. 7502. 



Type locality. — Albatross Station 2927, west from San Diego, 

 Calif., depth 572 meters, mud bottom. 



Genus STAUROCALYPTUS Ijima 



STAUROCALYPTUS DOWLINGI (Lambe) 



Rhabdocahjptu'^ doifliniji Lambe, 1893, p. 37. 

 Staurocali/ptus doxclmgi Ijima, 1897, vol. 1, p. 53. 



Holotype. — In the Museum of the Geological Survey, Ottawa, 

 Canada ; described from the west coast of Canada. 



Other records. — Schulze (1899, p. 47) described Calif ornian speci- 

 mens from Albatross Station 2955, depth 221 meters. This station 

 is just south of Santa Rosa Island, The specimen he figures is 

 U.S.N.M. No. 7578. He also had a specimen from Alaska. 



STAUROCALYPTUS SOLmUS Schulze 



Staurocalyptus solidus F. E. SciitrLZE, 1899, p. 51. 



Holotype.— U.S.N.M. No. 7581. 



Type locality. — Albatr^oss Station 2948, near Santa Cruz Island, 

 depth 486 meters. 



Other specimens recorded by Schulze are from : 



Albatross Station 3071, "Washington, deptli 1,253 meters. 

 Albatross Station 3202, Monterey Bay, depth 699 meters. 



Three other specimens from Monterey Bay are in the collection 

 of Stanford University. The species is also represented in the Brit- 

 ish Museum (No. 29.8.22.26). 



Description (based on the Stanford University specimens). — 

 Shape, vasif orm ; a hollow cylinder. Size, up to 15 cm in diameter, 

 24 cm high. Consistency, fragile. Color in life and when pre- 

 served, drab. Oscules, on cloacal surface only ; round, 1 to 4 mm in 

 diameter. Pores, on outer surface only; round, 0.2 to 0.4 mm in 

 diameter. Surface covered with a forest of projecting spicules. 



Parenchyma, about 23 mm thick. Prostalia marginalia, none as 

 distinct from pleuralia. Prostalia pleuralia, abundant diacts 40 to 

 60 mm long. Prostalia basalia, none. Dermalia autodermal, diacts 

 up to 20 mm long. Dermalia hypodermal, conspicuous pentacts, 

 rhabcls about 20 mm long, clads about 4 mm above the surface and 

 each arm about 3 to 5 mm long. There are here also small pentacts, 

 each arm spined and about 12/u, by 150/x. Gastralia autodermal. 



