BERMUDA ECHIJSTODERMS. 125 



two. The genital organs are present in only a single individual' 

 and consist of a small bunch of two or three dichotomously 

 branched tubules attached to the mesentery very near the mouth. 

 The anus is on the dorsal side or terminal close to the dorsal 

 surface. The calcareous ring is like Ludwig's ^ figure for H. 

 captiva but the calcareous tables and buttons resemble more 

 closely Heilprin's ^ figures for H. abbreviata. After comparing 

 the figures and description of the latter species with Ludwig's 

 description and figures of H. captiva and with the four speci- 

 mens before me, I am confident that the two species are iden- 

 tical. One of my specimens agrees in every detail except the 

 shade of color and the number of tentacles with the type of 

 abbreviata, yet cannot properly be separated from the other 

 three. Accordingly I have stricken H. abbreviata from the list 

 of Bermudan holothurians. 



The rest of the collection before me is made up of fourteen 

 synaptids, thirteen of which were in a single bottle labeled 

 "Synaptas." Of these Mr. Carpenter says: "Collected at 

 Cove, Coney Island, June 28, 1898. The cove, which opens 

 on the submerged reefs of the north shore by a narrow channel 

 through the rocks, is well protected from the waves. In the 

 sandy bottom of this cove less than eight inches below the sur- 

 face of the sand, the Synaptas were found. Bottom of cove 

 covered with water even at low tide. Synaptas cylindrical in 

 shape varying in length from half an inch to about five inches, 

 when found. Diameter never exceeded half an inch. Color of 

 body a light brown, modified by the color of the sand which 

 filled the intestine of each. We found the Synaptas in but one 

 place. However this was the only spot where we looked for 

 them carefully. We found them on an average I should say of 

 one to every three shovelfuls of sand sifted." The other syn- 

 apta was in a small bottle by itself and of this one Mr. Car- 

 penter says : " Collected at Cove, Coney Island, July 28, 

 1898. Found under a stone in a tideway through which 

 water constantly runs but never with great rapidity. Surround- 

 ings rocky. Specimen was of uniform cylindrical shape and 

 about one inch long and one-eighth inch in diameter. When 



