720 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



Chondrodvea kefersteini Ostergren, Das system dei Synapteden, Ofversigt, etc., 

 1898, no. 2, p. 114. 



Tentacles 25 to 26, with 30 to 62 (or even 80 according to Semper) 

 digits along either side in a crowded zigzag series, or even two series. 

 Cartilaginous ring 7 mm. wide, with 17 small perforations on pos- 

 terior border. Polian vesicles 23 in the single specimen available. 

 Single madreporic canal in dorsal mesentery; madreporic body rather 

 elongate. Anchor arms smooth, the stock on handle without proc- 

 esses but very minutely roughened along the edge. Anchor plates 

 symmetrical, with six larger dentate holes, a smaller partially dentate 

 one, together with two large and three or four small smooth ones at 

 the handle. Miliary granules, small irregular rods or incomplete 

 rosettes. Color in life, brownish green; in alcohol, reddish ])rown. 



Localities. — Station 4031, Penguin Bank, south coast of Oahu Island, 

 27 fathoms, fine coral sand, foraminifera, coral; Station 3876, Auau 

 Channel, between Maui and Lanai islands, 28 to 13 fathoms, sand and 

 gravel; 5 fragments. 



The specimen from 4031 consists of a fragment about 2.50 mm. long 

 (in life) of the anterior portion of an animal, while those from 3876 

 are fragments of the posterior part of two or three smaller individ- 

 uals. The former has lost the calcareous deposits through dissolution, 

 but in the latter specimens they are in good condition. The deposits 

 agree fairh^ well with Selenka's figure. In the handle of the anchor 

 plates, which are 0.24 to 0.25 mm. long, are three small smooth holes 

 and two large. The third large hole, which is smooth in Selenka's 

 figure, is toothed around the posterior border. This hole is consid- 

 erably smaller than the other two in the handle and i;5 median in posi- 

 tion. Of the three small holes the median is the largest. The rod 

 which forms an arch across handle is toothed on posterior border and 

 has one or two teeth on outer border. The teeth in the six serrate 

 holes are very conspicuous. The stock or transverse handle at the 

 end of the shaft of the anchor is without any processes, but it is 

 minutely roughened. There are a few granuliform protuberances on 

 the central portion at the base where the two flukes join each other. 

 Miliary granules are similar to Semper's figures, namely, small irreg- 

 ular rods about 0.01 to 0.0135 mm. long, often expanded into plate- 

 like forms. (Plate LXXX, fig. 2.) 



Three fragments of a snmll individual mifuis the anterior end were 

 also taken at 3876. The deposits are essentially as in the adult, but 

 the handle of the anchor plates may have as many as five or six small 

 holes. The handle or stock is more frequently absent from the anchor 

 shafts, and the miliary granules are simpler than in the above-described 

 specimen, almost exactly like Semper's figures. Ludwig has noted 

 that the seventh hole in the anchor plate is toothed" and Bedford* 

 in a specimen from Rotuma found toothed and smooth holes. 



aZool. Jahrb. Syst., Ill, 1888, p. 818. /> Proc. Zool. Soc, 1898, p. 847. 



