54 PROCEEDINGS OF THE ACADEMY OF [Feb., 



granules, of which there are about five in 1 mm. on the dorsal surface 

 of the arm bases. The granules become much finer outwards, and 

 almost disappear near extremity of arm. Vertebrae visible through 

 skin, but surface of arm practically smooth and without distinct 

 demarcation of joints, except of first three or four, which are marked 

 off by shallow constrictions. Ventral surface of arms entirely 

 naked, and lateral and ventral arm plates clearly visible through 

 skin. First tentacle pore unprotected; next four or five pores 

 provided with a single arm spine, and the rest with two. Abradial 

 spine very small, cylindrical, enclosed in skin, more or less rough 

 at free end. Adradial one clavate, enclosed in skin, very rough at 

 free end. Arm spines largest at middle of arm, the adradial one 

 being one and a half times as long as, and the abradial one a little 

 shorter than, the corresponding arm joint. They are transformed 

 into compound hooks, with three to six booklets, towards the very 

 extremity of the arm. Oral tentacle pore and first three or four 

 tentacle pores provided with tubes. Color in alcohol: grayish brown. 



One specimen; Sagami Sea. 



Like A. intedum layman and A. migrator Koehler, this species 

 appears to be an intermediate form between the sections Asteroschema, 

 s. str., and Ophiocreas. 

 Astrocharis ijimai Matsumoto. 



1911, Dobuts. Z. Tokyo, 23, p. 617 (in Japanese). 



Diameter of disk 4.5 mm. Length of arms 50 mm. Width of 

 arms at base 2.5 mm. Disk five-lobed, with deeply indented inter- 

 brachial borders, with lobes emarginate towards arms, flat, sunken 

 at the central region, raised at the lobes, covered with very fine, 

 smooth, irregular scales, which are very close-set and partly imbri- 

 cated. Radial shields naked, very small, triangular, with apex 

 turned within, tuberculous when examined under a microscope. 

 Ventral interbrachial areas with very deep notches, exceedingly 

 narrowed by the very wide arm bases. Two genital slits small, 

 parallel, nearly vertical. On either side of each lobe of the disk, 

 lies the naked genital plate, which is large, oval, and tuberculous 

 under a microscope. 



Oral angles puffed laterally, almost filling up the oral slits. Teeth 

 small, triangular, arranged in a single vertical row. No oral or 

 dental papillae. 



Arms very wide at base, keeping the same width for a distance of 

 about 4 or 5 mm., then rather rapidly narrowed, becoming slender 

 and cyhndrical, with a width of about 1 mm.; covered with fine 



