166 Bulletin Vanderbilt Marine Mtiseum, Vol. VII 



— Studer, Th., Abh. d. k. Akad. d. Wiss. z. Berlin, 1882, p. 7 

 (et variety nigra). — Marktanner-Turneretscher, G., An- 

 nal. d. k. k. Naturg. Hofmus. Wien, 1887, Bd. II, p. 294.— 

 Duncan, M., Journ. Linn. Soc. Zool., 1887, vol. XXI, p. 86.— 

 Brock, J., Zeitsch. f. Wiss. Zool., Leipzig, 1888, Bd. XLVII, 

 p. 475.— Bell, J., Proc. Zool. Soc, London, 1888, p. 388.— 

 DODERLEIN, L., Zool. Jahrb., 1889, Bd. Ill, p. 831.— LoRlOL, 

 P. DE., Mem. Soc. Phys. et Hist. Nat. de Geneve, 1893, t. 

 XXXII, pt. I, No. 3, p. 10; Rev. Suisse Zool., 1. 1, 1893, p. 398. 

 — KOEHLER, R., Bull. Sci., France-Belg., 1898, t. XXXI, p. 66. 

 — LUDWIG, H., Abh. Senckenb. Naturf . Gesell., 1899, Bd. XXI, 

 heft 4, p. 544. — KoEHLER, R., Siboga-Expeditie, Monogr. 

 XLV-B, Ophiures Littorales, 1905, p. 16 ; Bull. Scient. France- 

 Belg., 1907, t. XLI, p. 287.— Clark, H. L., Bull. Mus. Comp. 

 Zool., 1908, vol. LI, p. 289 ; Mem. Mus. Comp. Zool., 1915, vol. 

 XXV, p. 342, entry 1365. — Matsumoto, H., Journ. Coll. Sci. 

 Imp. Japan, Tokio, 1917, vol. XXXVIII, p. 299. 

 Ophiolepis garretti, Lyman, Th., Proc. Boston Soc. Nat. Hist., 

 1862, vol. VIII, p. 77 ; Mem. Mus. Comp. Zool., 1865, vol. I, 

 p. 61, pi. 2, fig. 4. — Ljungman, a., op. cit., 1886, p. 306. 



Echinoidea 

 Order: CIDAROIDEA 

 Family: CIDARIDAE 



Group: Cidarina 



Genus: CIDARIS Leske 



Cidaris abyssicola (A. Agassiz) 



■f 



Plates 62 and 63 



Type: The type series of this species was dredged by the 

 United States Coast Survey Steamer "Blake" at several stations 

 in the West Indies, in depths ranging from 40 to 270 fathoms and 

 was deposited in the Museum of Comparative Zoology, Cambridge, 

 Massachusetts. 



Distribution : This species has been reliably reported from 

 numerous stations in deep water off the east coast of the United 

 States, from south of Martha's Vineyard to southern Florida and 



