166 BULLETIN 75, UNITED STATES NATIONAL MUSEUM. 



second papillae. Genital slits moderate. First under arm plate, 

 minute; succeeding plates tetragonal, with rounded angles, longer 

 than wide, broadly in contact. Side arm plates fairly large, barely 

 meeting above, but scarcely below. Each plate carries five slender, 

 sharp spines, of which the lowest is a little the longest and slightly 

 exceeds the joint. Tentacle pores large, each with a single, small 

 tentacle scale. Color (dried from alcohol), disk, gray; interbrachial 

 spaces below light brown to nearly black; arms dull grayish to 

 nearly white; radial shields sometimes (in large specimens) with a 

 reddish tinge. 



Localities. Albatross station 3739, off Ose Zaki, Honshu Island, 

 Japan, 55 to 65 fathoms, volcanic sand, shells, rocks, 4 specimens; 

 station 4972, off eastern Japan, lat. 33 25' 45" N.; long. 135 33' E., 

 440 fathoms, brown-green mud, foraminifera, bottom temperature 

 39.8, 1 specimen; station 5085, Sagami Bay, lat. 35 6' 45" N.; 

 long. 139 19' 45" E., 622 fathoms, green mud, fine black sand, 

 bottom temperature 37.8, 4 specimens; station 5086, Sagami Bay, 

 lat. 35 8' 15" N.; long. 139 20' E., 292 fathoms, green mud, coarse 

 black sand, bottom temperature 43.7, 1 specimen; station 5088, 

 Sagami Bay, lat. 35 11' 25" N.; long. 139 28' 20" E., 369 to 405 

 fathoms, green mud, bottom temperature 41.8, 1 specimen. Bathy- 

 metrical range, 55 to 622 fathoms. Temperature range, 43.7 to 

 37.8. Eleven specimens. 



Type.C&t. No. 25544, U.S.N.M., from station 5085. 



This species is not likely to be mistaken for any other species of 

 Amphiodia, and the mouth parts alone will distinguish it from any 

 Amphiura having the interbrachial spaces below naked. The speci- 

 mens before me range in disk diameter from 4 to 10 mm. and show 

 comparatively little diversity. 



AMPHIPHOLIS PUGETANA. 



Amphiura pugetana LYMAN, Proc. Boston Soc. Nat. Hist., vol. 7, 1868, p. 193. 

 Amphipholis pugetana VERRILL, Trans. Conn. Acad., vol. 10, 1899, p. 312. 



Localities. Albatross station 2850, off Alaska, lat. 54 52' N.; 

 long. 159 46' W., 21 fathoms, broken shells, bottom temperature 

 48.2, 5 specimens; station 2856, off Alaska, lat. 58 7' N.; long. 

 151 36' W., 68 fathoms, gray sand, black specks, bottom tempera- 

 ture 44, 1 specimen; station 2876, off Washington, lat. 48 33' N.; 

 long. 124 53' W., 59 fathoms, black sand, mud, bottom tempera- 

 ture 45.5, 3 specimens; station 3052, off Oregon, lat. 44 N. ; long. 

 124 57' W., 48 fathoms, coral, broken shells, rocky, bottom tem- 

 perature 49, 1 specimen; station 3466, off Washington, lat. 48 18' 

 30" N.; long. 123 22' W., 56 fathoms, gray sand, shells, rocky, 

 bottom temperature 48.5, 1 specimen; station 4230, off Indian 

 Point, Alaska, 10S to 240 fathoms, rocky, bottom temperature 42.4, 



