g 2 NATURAL HISTORY BULLETIN. 



vated rows corresponding to the lateral spines; part of the 

 granules of the latter bear relatively large, claw-shaped hooks 

 with a terminal, strongly incurved claw and two or three 

 swollen secondary denticles on its inner edge. The lateral 

 spines are mostly three, small, short, rough or thorny at the 

 tip. Mouth-papilla' four or five, small, rough, mostly acute, 

 the outer one larger and obtuse. 



Astrogomphus rudis Verrill, sp. nov. 



Plate VII; Fifures i, \a. 



This species differs from A. vallatus in having the radial 

 ribs wider and less raised, and the disk-spinules more numer- 

 ous, shorter, and much more thorny, and not forming a defi- 

 nite marginal row; in having smaller, though similar, spin- 

 ules on the whole under surface of the disk, up to the mouth- 

 slits, not forming definite interradial groups, but having small 

 granules between them; in having more numerous and small- 

 er mouth-papilla? and tooth-papillae; in having wider, closer, 

 and more even, raised, granulated bands on the arms, with 

 much narrower sunken intervals; and in having shorter, 

 stouter, and much more thorny tentacle-scales or spines, usu- 

 ally five in a group. The minute hooks on the bands of the 

 arms are very numerous. 



Station 56. Pourtales' Plateau, 200 fathoms, one example; 

 station 28, off Sand Key, in 116 fathoms, one example. 



ASTROPORPA ANNULATA (Erst. & Lli/kcil. 



Astroporpa annulata (Erst. & Lutken, Vid. Meddel., p. 17, 1856; Add. 

 ad. Hist. Oph., Pt. 11, p. 152, pi. V, fig. 4. Verrill, Notes on Radi- 

 ata, Trans. Conn. Acad., I, p. 341, 1868. Lyman, Report Voy. Chal- 

 lenger, Zool., Ophiuroidea, V, p. 270, 1882; Bull. Mus. Comp. Zool., 

 X, p. 279, 1883. Verrill, Rep. U. S. Fish Comni., for 1883, p. 552, 

 579, 1885. 



Astroporpa dasycladia Duj. & Hupe, Hist. Nat. Zooph. Echin., p. 

 298, 1862. 



Sigsbeia, sp., Nutting, Narrative, p. 79. 

 Station 2. off Havana, no fathoms. 



