406 On a new Holotliurian jrom Bermuda. 



shore), an individual which was at once seen to be peculiar. 

 The Holotliurian was about 25 cm. in length, and of a deep 

 yellowish-brown colour, unmarked by spots of any other 

 hue. Anal teeth were particularly prominent, and the pedi- 

 ciles and ventral surface were tinged with greenish pigment, 

 such as one is accustomed to see in Holothuria captiva and in 

 H. surinqmensis (Orozier, 1915, p. 274). Stichopus has no 

 anal teeth, and totally lacks this green pigment. The speci- 

 men was unfortunately lost before detailed examination could 

 be given it. Attempts to discover an additional example 

 have thus far been fruitless. 



The single specimen observed has, however, considerable 

 zoo-geographical interest. It seems probable, from the 

 external characters above mentioned, that it is an Actinopyga, 

 presumably A. agassizii (Selenka) *, which, is known from 

 tin- Bahamas, Florida, Tortugas, Barbadoes, Jamaica, and 

 Hayti (Sluiter, lillO). The inference seems fair that it 

 represents a recent arrival in Bermudan waters, since previous 

 extensive and detailed collecting has failed to reveal its 

 presence, and since only a single specimen lias been found. 

 Concerning the method whereby, on this assumption, it came 

 to Bermuda, one can only speculate. It may have been 

 transported either (as a larva) by ocean currents or (as an 

 adult) upon the bottom of a vessel. The latter seems the 

 less probable. 



References. 



BRITTOX, N. L. 1912. "Botanical Exploration in Bermuda,'' Journ. 

 X.Y. Bot, Gard. vol, xiii. pp. 189-194, 5 pi. 



< 'LARK, II. L. 1901. " Bermudau Echinoderms. A Report on Obser- 

 vations and Collections made in 1899," Proc. Best. Soc. Nat. Hist. 

 vol. xxix. pp. 339-845. 



. 1907. "The Apodous Holothurians : a Monograph of the 

 Synaptidre and Molpadidae," Smithsonian Coutrib. Knowl. 

 vol. xxxv. 231 pp., 13 pi. 



CROZIER, W. J. 1915. " The Sensory Reactions of llolothuria sttrmam- 

 ensis. Ludwig," Zool. Jahrb., Abt. Physiol. Bd. xxxv. pp. 2:33-297. 



PILSBRY, H. A. 1900. "The Air-breathing Mollusks of the Ber- 

 mudas," Trans. Conn. Acad. Arts & Sci. vol. x. pp. 491-509 

 pi. 62. 



SLUITER, C. P. 1910. " Westindisclie Holothurien." Zool. Jahrb., 

 Suppl. 11, pp. 331-342. 



' I am indebted to Dr. H. L. Clark for a suggestion regarding the 

 probable identity of the specimen. 



