NORTH PACIFIC OPHIURANS IN NATIONAL MUSEUM CLARK. <)5 



narrow within but much expanded distally; oral plates long and 

 narrow. Oral papillae small, those along side of jaw more or less 

 completely fused into a low but very wide plate; at apex of jaw are 

 four or five longer and more pointed papilla?. On adoral plates and 

 tip of oral shield are a number of granules like those on interbrachial 

 spaces. Genital slits short and genital scales inconspicuous, with 

 no trace of an arm comb. First under arm plate pentagonal, as long 

 as wide; second plate pentagonal, longer than wide; third plate simi- 

 lar but much wider distally than it is long, and with convex distal 

 margin; succeeding plates similar but continually becoming smaller 

 and yet relatively wider. Side arm plates very large, meeting 

 broadly above and below, much swollen distally; each plate carries 

 two short, pointed arm spines, half as long as joint, close together, 

 low down on arm; second joint (the first one visible from above) 

 bears in addition two much longer spines on upper part of plate; 

 uppermost spine, which lies near midline of upper surface of arm, 

 is nearly equal to three arm joints, while second little exceeds one. 

 Oral tentacle pore with one very large, long oral scale; tentacle 

 pores of arm, each with a single small round scale. Color (dried 

 from alcohol), disk, grayish; arms, yellowish. 



Locality. Albatross station 5084, off Sagami Bay, Japan, hit. 34 N. ; 

 long. 137 49' 40" W., 918 fathoms, green mud, fine sand, globigerina, 

 bottom temperature 36.8, 1 specimen. 



Type Cat. No. 25538, U.S.N.M., from station 5084. 



Although this species is near panniculus, the only species of the 

 genus hitherto known, it may be distinguished by the very long 

 spines on the upper side of the basal arm joints, and by the coarser 

 and more ornamental scaling of the disk; the radial shields are also 



very much longer and narrower. 



i 



OPHIERNUS ADSPERSUS. 



Ophiernus adspcrsus LYMAN, Bull. Mus. Comp. Zool., vol. 10, 1883, p. 236. 

 Ophiernus annectens LUTKEN and MORTENSEN, Mem. Mus. Comp. Zool., vol. 23, 

 1899, p. 107. 



Localities. Albatross station 4919, Eastern Sea, lat. 30 34' X.: 

 long. 129 19' 30" E., 440 fathoms, globigerina ooze, bottom tem- 

 perature 31.8, 1 specimen; station 4928, Colnett Strait, lat. 29 51' N. ; 

 long. 131 2' 30" E., 1,008 fathoms, gray sand, globigerina, bottom 

 temperature 36.8, 1 specimen; station 4960, off southern Japan, lat. 

 32 34' N.; long. 132 21' 45" E., 578 fathoms, green-brown mud, 

 fine gray sand, foraminifera, bottom temperature 38.7, 2 specimens; 

 station 4966, off Japan, lat. 33 25' 20" N.; long. 135 36' 20 - " E., 

 244 to 290 fathoms, brown mud, sand, foraminifera, bottom tempera- 



