NO. 17 NEW SPONGES— DE LAUBENFELS 21 



toxas instead of sigmas. To this genus should be transferred Coelo- 

 sphaera toxifera Wilson (1925, p. 435) and Histodcrma vesiculata 

 Dendy (1905, p. 166). 



Genotype. — Coelospliaerella johnsoni, new species. 



COELOSPHAERELLA JOHNSONI, n. sp. 



Holotype.—V.S.^M. no. 22364; from station 81, latitude i8°29' 

 45" N., longitude 65°25'5o" W. to latitude i8°35'3o" N., longitude 

 65°23'54" W., February 26, 1933, 200 to 400 fathoms. 



This specimen is an almost perfect sphere, 14 mm in diameter. 

 Here and there from its surface protrude processes about 2 mm in 

 diameter and 3 mm high. About half of these are open at the end, 

 as if they were oscules, and about half are closed, as if they were 

 fistules. The color is pale, almost white, and the consistency mediocre. 

 The ectosome is readily detachable, because it overlies extensive sub- 

 dermal cavities. Many of the spicules in it are tangentially arranged. 

 Pores could not be made out, unless they are represented by the 

 fistular projections, and, as mentioned above, other surface structures 

 are perhaps to be interpreted as oscules. The endosomal structure is 

 rather cavernous, and contains relatively few spicules. The chief 

 rigidity of the sponge comes from the ectosome. The principal spic- 

 ules are strongyles, 9 /x, by 420 p., to which are added as microscleres 

 palmate isochelas 15 /t long and toxas of typical shape 70 jx to 140 ju, 

 long. 



The closest relative of this species seems to be C. toxifera, from the 

 Philippines, but that species had much larger megascleres and chelas ; 

 the former about 16, ju, by 360 /x, and the latter 20^. In many other 

 ways, however, the relationship is clearly very close. 



Named for Eldridge R. Johnson, sponsor of the expedition. 



INFLATELLA Schmidt 

 INFLATELLA BARTSCHI, n. sp. 



Holotypc. — U.S.N.M. no. 22391 ; from station 104, latitude i8°3o' 

 40" N., longitude 66°i3'2o"W. to latitude i8°3o'io" N., longitude 

 66°i3'5o" W., March 8, 1933, 80 to 120 fathoms. 



There are two specimens of this sponge, each consisting of a basal 

 mass 4 or 5 cm long, from which arise about a dozen fistules, 

 2 mm in diameter, with exceedingly thin walls, only about 80 /x thick. 

 The color is green as preserved in alcohol, and the texture is fragile. 

 The surface is even, glossy, smooth ; no pores or oscules other than 

 the above mentioned fistules could be made out. The internal struc- 

 ture is amorphous. The spicules are strongyles only 5 fx by 250 /a. 



