286 NEW STARFISHES AND OPHIUBANS—VEBBILL. vol.xvii. 



ou some of the jaws there is a similar spine on the middle of each lateral 

 margin, but these are more frequently absent. Some of the jaws also 

 vary in the same specimen by having only two small spines on the 

 inner edge; others have three. 



All the jaw-spines are covered with loose membrane, which bears 

 clusters of numerous pedicellariie, those on the longer actiual spines 

 being very minute, while those on the oral spines are much larger, with 

 slender, strongly curved jaws. 



All the arms are broken off in our type specimen, only the three basal 

 segments remaining on auy of them; on these segments each adambu- 

 lacral plate bears a slender, transverse furrow-spine on the prominent 

 distal angle of the margin, and a rather long, slender, acute, fluted 

 spine on its actinal surface; the latter are covered with minute pedi- 

 cellarine, while the transverse furrow- spines carry clusters of large 

 pedicellarige like those of the oral spines. 



The dorsal plates of the bases of the arms, so far as preserved, are 

 similar to those of the disk, but rather smaller, and carry similar, but 

 smaller, spines in small groups. 



Taken in 1883 at station 2097, off' Chesapeake Bay, in 1,917 fathoms 

 (Ko. 6301, IT. S. ]S\ M.). 



This species resembles the coarser spined variety of Brismga multi- 

 costata in the spinulation of the disk, but the jaws are much broader 

 and their spines quite different. 



FEEYELLA MICROSPINA, new species. 



Rays in the type specimen, thirteen, slender, and of moderate length, 

 evenly rounded and a little swollen on the genital region, angular and 

 slender beyond. Eadii, about as 1 to 10. Dorsal surface of the disk is 

 thickly covered with small, rounded plates, each of which bears a cluster 

 of numerous very minute spinulesin more or less stellate groups, mostly 

 of six to twelve. Interradial plates indistinct or showing but little of 

 the surface. Jaws very short and broad, the breadth about equal to 

 the length; the oral end usually bears six small divergent spines, three 

 on each half, but sometimes only four or live are developed ; of these 

 the two outermost, situated on the angles, are directed nearly trans- 

 versely and are usually blunt or bilobed at the end; the other four, 

 which are directed orally, are smaller, the two central ones very small 

 and papilliform. The actinal surface of the jaw usually bears a pair of 

 rather short, robust si)ines sitaated on the somewhat prominent outer 

 angles; these spines are more or less clavate and often flattened at the 

 end, which is usually divided into two to four short prongs or papillte, 

 and in some cases it is deeply fissured; they agree nearly in size and 

 structure with the succeeding spines on several of the basal adambu- 

 lacral plates. 



The genital region of the ray occupies rather more than one-fourth 

 the total length, and is considerably swollen on the upper side, so that 



I 



