226 RECENT OPHIURANS. 



and arm-spines are more important. In view of the fact that angularis is an 

 Antarctic species from the vicinity of Heard Island, it is important not to affirm 

 its occurrence in the West Indies until we have better evidence than these two 

 Blake specimens afford. 



473. A. GRANDISQUAMA Lyman, 1869. Bull. M. C. Z., 1, p. 334. Koehler, 1898. Hirondelle 



Ech. et Oph., pi. 9, f. 45, 46 (as A. longispina). 



22 specimens, including the holotype. Off Georgia, 229-262 fms. Florida: 

 OFF Tennessee Reef, 174 fms. ; off Sombrero Key, 240 fms. ; off Sand Key, 125- 

 134 fms. ; off the Tortugas, 262 fms. Gulf of Mexico, 152 fms. 



474. A. GYMNOGASTRA Lutken and Mortensen, 1899. Mem. M. C. Z., 23, p. 145, pi. 9, f. 6-8. 



2 coTYPES. Gulf of Panama, 1270 fms. 



475. A. GYMNOPORA Ldtken and Mortensen, 1899. Mem. M. C. Z., 23, p. 150, pi. 11, f. 7-9. 



6 COTYPES. Gulf of Panama, 182 fms. 



476. A. INCANA Lyman, 1879. Bull. M. C. Z., 6, p. 20, pi. 11, f. 285-287. 



4 COTYPES. Cape Colony: Simon's Bay, 10-20 fms. 



477. A. IRIS Lyman, 1879. Bull. M. C. Z., 6, p. 23, pi. 11, f. 302-304. 



1 specimen. Dutch East Indies: near Lucipara Islands, 887 fms. 



478. A. LEPTOPHOLIDA, sp. nov. (XeTrro^iXiSos, having fine scales). Plate 4, f. 11, 12. 



Disk 6 mm. in diameter; arms 20-25 mm. long. Disk covered with a coat 

 of rather small, overlapping scales (hence the name) among which the primary 

 plates are not distinguishable; from center to interradial margin, 15-17 series 

 of scales may be counted and across each interradial areal (i. e. from proximal 

 end of a radial shield to the proximal end of the nearer shield of the adjoining 

 pair) 13-15 series. Radial shields small; length about one third of disk-radius 

 and width about one third of length; proximally separate but distal ends in 

 contact. Just distal to radial shields is a minute spinelet or Uttle stumpy hook, 

 borne on the distal end of the genital scale. Upper arm-plates broadly oval 

 with distal margin nearly straight and proximal much curved; they are all more 

 or less in contact. Interbrachial spaces below completely covered by crowded 

 minute scales. Oral shields ovate, widest distal to middle, but with distal end 

 narrower than proximal. Adoral plates almost triangular, the inner ends being 

 very narrow and only slightly in contact. Subdental oral papillae rather small, 

 ovate. At the distal end of the mouth-angles each adoral plate carries two oral 



