GYMNOPATAGUS PULCHELLUS. 229 



pores indicates that they are sexually mature. That they are not the young 

 of pulchellus is clearly shown by the pedicellariae, as well as by the characters 

 given in the key above. 



Station 3749. Off Suno Saki, Honshu Island, Japan. Bott. temp.? 

 83-158 fms. Bk. s., sh. 



Station 3751. Off Suno Saki, Honshu Island, Japan. Bott. temp.? 

 140-148 fms. Gn. m., vol. s. 



Two specimens. 



Gymnopatagus pulchellus. 



A. Agaesiz and Clark, 1907. Bull. M. C. Z., 60, p. 254. 



Plate 159, figs 2-6. 



Length 90 mm.; width across front petals 67 mm.; just back of apical 

 system, 70 mm. ; across middle of posterior petals, 68 mm. ; across ends of pos- 

 terior petals 63 mm.; height just back of apical system, 33 mm. The 

 smaller specimens all show essentially the same proportions. The photo- 

 graphs given (PL 159) reveal the form of the test, the tuberculation, the char- 

 acter of the petals, the fascioles, the sternum, the broad ventral ambulacra and 

 the peristome better than any description can. The subanal plastron has five 

 ambulacral plates, with four large tube-feet entering into its composition on 

 each side. The labrum is exceedingly long and narrow, about 16 X 3 mm. and 

 reaches almost to the distal end of the third ambulacral plate on each side. 

 The peripetalous fasciole, so distinct in the holotype, is very narrow and is 

 incomplete in the smallest specimen, 57 mm. long (PL 159, figs. 5, 6). The peri- 

 proct is close to the upper margin of the nearly vertical posterior end of the test ; 

 in the holotype it is about 10 mm. high by 11 mm. broad. The large dorsal 

 primary spines are broken in every case, but judging from those most nearly 

 perfect, they must have been over 30 mm. in length. The four genital pores 

 are very near together and are of approximately equal size except in the smallest 

 specimen, where the anterior pair are obviously smaller than the posterior. 

 The smallest specimen is bright rose-color above and nearly pure white beneath, 

 though all the spines have a brownish cast. Larger specimens are less rosy 

 and more fawn-color. The test of the holotype is nearly uniform fawn-color, 

 with the long spines whitish. 



Pedicellariae are very abundant, but are not very distinctive. No globi- 



