1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. G31 



Off Havana, Cuba: 



Station 2321, 230 fathoms, fne. gy. S., one specimen (12353). 



Station 2326, 194 fathoms, Cr., one specimen (12346). 



Station 2327, 182 fathoms, fno. S., one specimen (12351). 



Station 2337, 199 fathoms, Cr., three specimens (12350). 



Station 2345, 184 fathoms, gy. wh. Cr., one specimen (12347). 

 South of Cuba: 



Latitude 19° 56' 04'' N., longitude 75° 48' 55" W., 274 fathoms, bn. M. fne. S.; 

 station 2129, one specimen (7109). 



Pentacrinus decorus Wyville Thomson. 

 P. H. Carpenter, loc. eit., -p. 330. 



The number of specimens of Pentacrinus decorus obtained was not far 

 from 500, and all were taken off Havana, Cuba, in depths of 67 to 279 

 fathoms. The series is an exceedingly fine one, presenting all stages of 

 growth from the smallest to the largest described by Dr. Carpenter, 

 but very young specimens are comparatively rare. A hasty examina- 

 tion of the collection furnishes no important facts to add to Carpenter's 

 very full description. From 28 to 30 arms were noticed in a number of 

 specimens, and one specimen has 38 arms. In the last the branching is 

 regular on some rays and irregular on others ; the several rays bear 

 from 5 to 10 arms each, as follows : 5, 10, 8, 8, 7. The ray bearing 10 

 arms is divided as follows : The 2 primaries have 2 distichals each. The 

 primary on the right divides into two secondaries, the outer one with 

 3 palmars, terminating in 2 fiee arms, the inner with 4 palmars, fol- 

 lowed by a free arm on the right, and a tertiary (if so we may call it) 

 on the left, the latter having 6 joints and ending in 2 free arms. The 

 inner secondary of the left primary has 5 palmars and 2 free arms ; the 

 outer secondary, 1 palmar, a free arm on the right, and a tertiary of 3 

 joints on the left, followed by 2 free arms. The height from the basals 

 to the tips of the arms is about 100™™, but, excepting for the greater 

 fullness of the cluster of arms, the specimen appears to be i)erfectly 

 normal. 



The youngest specimen is of about the same relative size as the small- 

 est described and figured by Dr. Carpenter {loc. cit., j). 21, pi. xxxv, 

 fig. 1). 



RECORD OF SPECIMEXS. 



Off Havana, Cuba: 



Stations 2156 to 2169, 78 to 278 fathoms, 1884, 125 + specimens (12355). 

 Stations 2319 to 2350, 67 to 279 fathoms, 1885, 300 -j- specimens (12356). 



(Young specimens.) 

 Off Havana, Cuba : 



Stations 2156-2169 (12571); station 2161, 146 fathoms (12568) ; station 2167, 

 201 fathoms (12569); station 2169, 78 fathoms (12570); stations 2319-2350 

 (12567) ; station 2335, 204 fathoms (12361) ; station 2346, 200 fathoms (12359, 

 12.566) ; station 2347, 216 fathoms (12362) ; station 2348, 211 fathoms ( 12360) ; 

 station 2349, 182 fiithoras (12565). 



