84 PROCEtbiNGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



the most interesting forms collected by the Blake in deep water were 

 not obtained by the Albatross, but, as the latter steamer is now (1885) 

 continuing her exi)lorations in the Gulf of Mexico, it is possible that 

 she will soon add largely to her former results. 



It is but just to add that the tine condition of the many specimens 

 brought in by the Albatross from this cruise is mainly due to the care 

 bestowed upon them by Mr. James E. Benedict, the naturalist in charge, 

 and Mr. Willard Nye, jr., who accompanied the steamer as a volunteer. 

 The shore collections were almost entirely made by these two naturalists. 



In the following notes the num_^bers inclosed in parentheses denote 

 the catalogue numbers of the United States National Museum under 

 which the specimens are registered. 



Cidaris tribuloides, Blainv. 



A large series of specimens of this species was obtained at Sabanilla 

 (8391, 8612), and several specimens were taken at the island of St. 

 Thomas (8390). Two young specimens were dredged at station 2138, 

 latitude 17o 44' 05" N., longitude 75° 39' W., 23 fathoms (7479); and 

 two of the same character at station 2146, latitude 9° 32' N., longitude 

 790 54' 30" W., 34 fathoms (7489). 



Dorocidaris Blakei, A. Agassiz. 



Bull. Mils. Conip. Zool., vol. v, p. 18.5, i»l. iv, 1878; Mem. Mus. Comp. Zool., 

 vol. X, No. 1, p. 10, pi. i, ii, 188;}. 



Numerous specimens of the genus Dorocidaris were collected by the 

 Albatross, but the majority w^ere of small size and difficult of identifi- 

 catiou without the means of comparison with a more complete series of 

 types than the Museum possesses. Only two species were recognized 

 among them — D. Blal-ei and D. painllata. The former was positively 

 determined from the three following stations: — 



Station 2128 5 latitude 19° 55' 46" N., longitude 75° 49' 23" W., 400 

 fathoms; one characteristic fan-shaped spine (7487). 



Station 2134 ; latitude 19° 56' 06" N., longitude 75° 47' 32" W., 254 

 fathoms; one large specimen (7483). 



Station 2162 ; latitude 23° 10' 30" N., longitude 82° 20' 25" W., 122 

 fathoms; one medium specimen (7486). 



Smaller specimens from the two following stations apparently belong 

 to the same species : — 



Station 2152; 2i miles northwest of Havana Light, Cuba, 387 fathoms 

 (7484). 



Station 2153 ; latitude 23° 10' 19" N., longitude 82° 23' 10" W., 283 

 fathoms (7481). 



Dorocidaris papillata, A. Agassiz. 



All of the specimens of this species obtained were considerably under 

 the medium size for the species, and the most of them were quite small. 

 The several localities at which they were dredged is as follows : 



