68 BULLETIN OF THE 



Astroschema ,tumidum sp. nov. 



Plate XVII. Figs. 450 - 453. 



Special Marks. — Disk and arms covered by regularly spaced, pointed, coni- 

 cal grains. The bases of the arras for two or three joints are strongly swollen. 



Description of an Individual (Station 192). — Diameter of disk 8 mm. 

 Length of arm 135 mm. Greatest width of arm, close to disk, 3.7 mm. 

 Width, beyond the swelling, 2.3 mm. Height of arm, at same point, 1.8 mm. 

 Seven or eight short, flat teeth, with a curved cutting edge ; the lowest one 

 smallest. The general granulation of the disk is continued in a somewhat 

 coarser form over the mouth-angles, and up their sides ; but there are no true 

 mouth-papillae. Arms well rounded, without any flattened surface, strongly 

 swollen and ribbed, for the first two or three joints, but even and tapering be- 

 yond ; set with pointed conical grains which are regularly spaced, about 5 in 

 the length of 1 mm., and which rarely touch each other. Disk strongly con- 

 tracted in interbrachial spaces, and occupied chiefly by the high, wide radial 

 shields (or ribs) which run quite to the centre ; granulation somewhat more 

 sparse than on arms. On first arm-pore there is no tentacle ; the next has one, 

 cylindrical, tapering and blunt, with sometimes a second rudimentary one ; the 

 j)ores beyond have two, whereof the upper one is, as usual, much the smaller. 

 One third out on the arm, the larger scale attains a length of 2 mm., and is rough 

 at the end and slightly clubbed. Color in alcohol, pale yellowish brown, with 

 interbrachial spaces of disk gray. 



Station 192, 129 fathoms, 1 specimen. 



This species presents the same swelled base of the arm found in Ophiocreas 

 cedipus, and doubtless for the same purpose, an egg-pouch. The genera As- 

 troschema and Ophiocreas though differing widely in their remote members, are, 

 in their proximate species, only distinguished by surface granulation in the 

 former. 



Astroschema rubrum sp. nov. 



Plate XVII. Figs. 454 -457. 



Special Marks. — Arms, at bases, not cleanly arched, but somewhat angular. 

 Mouth-angles puffed so as to nearly close the slits. Granulation fine, smooth, 

 and close-set, 6 or 7 in 1 mm. long. Tentacle scales short and scarcely club- 

 ended. 



Description of an Individual (Station 310). — Diameter of disk 12 mm. 

 Length of arm 160 mm. Width of arm near disk, 3.5 mm. Height of arm 

 3.5 mm. Mouth-angles so swollen as nearly to close the slits, and covered by 

 a smooth granulation much obscured by skin ; at the apex are small w'ide 

 teeth. Arms near base as high as wide and not cleanly rounded, but inclined to be 

 angular, and showing distinctly the outlines of arm-joints ; tapering uniformly ; 

 near their ends higher than wide ; covered by a close-set, smooth, fine granula- 

 tion, which, at bases of arms and on disk, has 6 or 7 grains in the length 



