184 DEICHMANN 



to make a thorough comparison between that form and T. briareus. 

 It is not impossible that the latter species then will be transferred to the 

 genus Athyone, thus relieving the genus Tliyone s. sir. of a species which 

 definitely does not belong in it. The presence in the Pacific form of a 

 peacrab closely related to a West Indian species may be another point in 

 favor of considering glasselli and briareus congeneric. 



I wish to thank Mr. Gil Bane for giving me this opportunity to add 

 some additional information to our knowledge of a not too well known 

 species, and for his generosity in depositing one of the specimens in the 

 Museum of Comparative Zoology, 



LITERATURE CITED 



Deichmann, Elisabeth 



1936. A new species of Thyone from the west coast of Mexico. Proc. New 

 England Zool. Club. 15:63-66, text-figs. 



1937. Holothurians from the Gulf of California, the West Coast of Lower 

 California and Clarion Island. The Terapleton Crocker Expedition, 9. 

 Zoologica [N. Y.] 22:161-176, text-figs. 1-3. 



1941. The Holothurioidea collected by the Velero III during the years 1932 

 to 1938. Pt. 1. Dendrochirota. Allan Hancock Pac. Exped. 8:61-195, 6 

 text-figs., pis. 10-30. 



1952. The rediscovery of the Holothurian Holothuria peruviana Lesson. 

 Amer. Mus. Novitates. 1553:1-7, text-figs. 1-15. 



Selenka, E. 



1867. Beitrage zur Anatomic und Systematik der Holothurien. Zeitschr. Wiss. 

 Zool. 17:291-374, pis. 17-20. 



1868. Nachtrag. Ibid. 18:109-119, pi. 8. 



Troschel, F. H. 



1846. Neue Holothurien-Gattungen. Arch. f. Naturgesch. 12(1) :60-66. 



