406 On a new Ilolothurian from Bermuda. 



shore), an iiidivitlual wliich was at once seen to be peculiar. 

 The Holothurian was about 25 cm. in lengtli, and of a deep 

 yellowisli-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 cnptiva and in 

 //. surinamensis (Crozier, 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 Actinopi/ga, 

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

 the Bahamas, Florida, Tortugas, Barbadoes, Jamaica, and 

 Hayti (Sluiter, IDIO). 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 has 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. 



Bkitton, N. L. 1912. "Botanical Exploration in Bermuda," Joum. 

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



Clabk, H. L. 1901. " Bermudan Ecliinoderms. — A Report on Obser- 

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

 vol. xxix. pp. 339-345. 



, 1907. " The Apodons Ilolothurians : a Monograph of tlie 



Synaptidae and Molpadidse," Smithsonian Oontrib. Kuowl. 

 vol. XXXV. 231 pp., 13 pi. 



Crozier, W. J. 1915. " The Sensory Reactions oiHolothuria snrinam- 

 ■ ensis, Ludwig-," Zool. Jahrb., Abt, Physiol. Bd. xxxv. pp. 233-297. 



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

 mudas," Ti'ans. 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. 



