274 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



armed with a few apical teeth. Mean diameter of disks about 90/* 

 (63-126//) ; height of spire 40-50/x. Tables in the introvert are some- 

 what irregtdar in form but similar in size, with a disk pierced by 

 numerous large holes. Five anal teeth present. Pedicels supported 

 by modified tables with elongated disk and two-pillared spire; length 

 of disks 110-120//, height of spire 40-60/*. End plate well developed, 

 measuring 140-185/x in diameter. Supporting rods of tentacles irregu- 

 larly branched and perforated. Calcareous ring resembles that of 

 Ps. africanus (Semper), but lacks the posterior prolongations. Re- 

 tractors inserted to body wall at about two-fifths the body length from 

 the anterior end. Polian vesicle and stone-canal single, the latter 

 ending in a fungiform madreporite. Respiratory trees 2, with a few 

 simple branches. Genital tubes branched twice dichotomously, in 2 

 tufts. 



The present species resembles Ps. bicolwnnatus Dendy and Hindle 

 in the form of its tables and calcareous ring, but differs from it in 

 having tentacles of 3 different sizes, in the lesser crowding of the pedi- 

 cels, and in the presence of an X-shaped spanning bar on the under- 

 side of the table disks. I take great pleasure in naming this new 

 species for Prof. Shozaburo Watase, of Tokyo Imperial University. 



Habitat. — Suruga Bay. 



Type.— Cat. No. 34176, U.S.KM. 



77. PSEUDOCUCUMIS SAGAMIENSIS, new species. 



Plate 10, figs. 26a, 6. 



Station 5088. One specimen. 

 Body spindle-like, with both extremities tapering and turning 

 dorsad. Length, as measured along the ventral median line, 27 

 mm.; along the dorsal, 16 mm.; diameter, 6 mm. Color dirty 

 brown all over; integument thin and stiff, rough to the touch. Only 

 14 tentacles are present, the small midventral one probably lost by 

 accident. Ten of them are large and are situated interradially in 

 pairs; the others are small and are radial in position. Pedicels 

 nonretractile, arranged in two rows along each ambulacrum. In- 

 terambulacra naked, the middorsal interambulacrum being twice 

 as broad as the others. General perisome thickly beset with tables 

 (pi. 10, figs. 26a, b). Disk almost round, 115-250/1 in diameter, 

 average 190/i, perforated with small holes, usually 13 in number, 

 but varying from 7 to 22. Spire about 100 /i high, consisting of two 

 pillars united twice and ending with a few obtuse teeth. Tables in 

 the introvert sparsely scattered, 90-140/* in diameter, averaging 

 110 p, with holes 5-15 in number, averaging 8; height of spire 50/*. 

 Pedicels supported by modified, elongated tables, about 85/* long. 

 End plate not well developed. Supporting rods of tentacles fusi- 

 form, with 4 large holes in the middle and small ones irregularly 



