130 bulletin: museum of compaeative zoology. 



Station 47S6. Between Medni and Bering, Komandorski Islands, 54 fathoms. 



" 4787. Between Medni and Bering, Komandorski Islands, 54-57 

 fathoms. 



" 4704. Off East Coast of Kamchatka, 58-69 fathoms. 



" 4795. Off East Coast of Kamchatka, 48-69 fathoms. 



" 4796. Off East Coast of Kamchatka, 48 fathoms. 

 Sixty specimens. 



PETALOSTICHA Haeckel. 

 CASSIDULIDAE Agassiz. 



NUCLEOLIDAE Agassiz. 

 Echinolampas sternopetala A. Ao. and Clark. 



This species may be at once recognized by its narrow apetaloid ambulacra, with 

 moderately long, straight, unequal poriferous zones. The color is bright yellowish- 

 green. Length, 47 mm.; width, 40 mm.; height, 21 mm. Unpaired ambulacrum 

 (poriferous portion), 12 mm. long, 2.5 mm. wide at open end, with 27 pairs of 

 pores in left zone and 30 in right; right anterior ambulacrum, 15 X 2.5 mm., 

 with 27 pairs of pores in left zone and 37 in right; right posterior ambulacrum, 

 15 X 2.5 mm., with 32 pairs of pores in left zone and only 25 in right. Anal sys- 

 tem covered mainly by three large plates. 



Station 4934. Off Kagoshima Gulf, Japan, 103-152 fathoms. 



One specimen. 



SPATANGIDAE Agassiz. 



POURTALESIAE A. Agassiz. 



Pourtalesia laguncula A. Ao. 

 Pourtalesia Jaguncula A. Agassiz, 1879. Proc. Amer. Acad., 14, p. 205. 



A good series of specimens, up to 30 mm. in length, is at hand. There is also 

 a posterior fragment of a much larger individual, in which the anal snout is dor- 

 sally flattened and 10 mm. wide. This individual was apparently over 50 mm. 

 long and possibly represents an undescribed species. 



Station 4766. Between Atka Island and Bowers Bank, Bering Sea, 1766 

 fathoms. 

 " 4906. Southwest of Koshika Islands, Eastern Sea, 369-406 fathoms. 

 " 4911. Southwest of Koshika Islands, Eastern Sea, 391 fathoms. 

 " 4912. Southwest of Koshika Islands, Eastern Sea, 391 fathoms. 

 " 4913. Southwest of Koshika Islands, Eastern Sea, 391 fathoms. 

 " 4914. Southwest of Koshika Islands, Eastern Sea, 427 fathoms. 

 " 4915. Southwest of Koshika Islands, Eastern Sea, 427 fathoms. 



