XVI. — Additions to the Echinodeems of the Bermudas. 

 By a. E. Verrill. 



ECHINODERMATA. 



A list of the species of echinoderms known from Bermuda has 

 recently been published by Mr. H. L. Clark.* In this list he enumer- 

 ated 28 species, but admitted that four or five of the holothurians 

 are doubtful ; an opinion in which I fully concur. Of Ophiuroidea 

 he listed seven species.f Our collection increases the number of 

 species in this group to 18. 



Most of these have already been recorded by me,J and some of 

 them had previously been recorded by Mr. Theod. Lyman (Rep. 

 Voy. Challenger, V.). 



We obtained nearly all the recorded echinoids and starfishes, 

 except Luidia clathratn, and apparently all the known holothurians, 

 but we did not add any species to the lists of these groups except in 

 the case of the holothurians. Our holothurians have not yet been 

 fully studied, but a small green Synapta was taken that has not 

 been recorded from Bermuda. This appears to be the Synapta 

 viridis Pourtales, described from the Florida coast in 1851, but 

 apparently not since rediscovered. 



Synapta vivipara was found common in a great variety of situa- 

 tions—under stones, in dead coral, buried in sand, etc. In life it is 

 browtiish red. 



The large black Stichopus, named S. diaboli by Heilprin, was 

 found very abundantly everywhere on the white shell-sand bottoms 

 down to at least 50 feet deep. It is exceedingly hard to preserve it 

 by any method tried by us, either in alcohol or formalin solutions. 

 Possibly ice-cold alcohol might have succeeded, if there had been 



* Notes on the Echinoderms of Bermuda, Annals New York Acad. Sci., xi, pp. 

 407-413, 1898. Based on the collection made by Prof. Bristol's party. 



f The species recorded by Mr. Clark are as follows : Ophiura appressa ; 

 Ophiactis Miilleri ; Ophiostigma isacanthum (two with 6 arms and 1 with five 

 arms were taken by us in 1898) ; Ophionereis reticulata, common ; Ophiocoma 

 echinata ( = crassispina Say), common ; O. pumila (both 6-rayed and 5-rayed 

 forms were found common by us, 1898) ; Ophiomyxa flaccida, common. All 

 these were also collected by the Yale party, 1898. All of these, except the first, 

 had also been recorded by Heilprin. 



X These Trans., vol. x, Faunal Catalogue, Ophiuroidea from the West Indian 

 Region, pp. 372-377, 1899. 



