302 



thurians" that the genus Chiridota is hermaphroditic; which may 

 indicate that his two species hawaiiensis and uniserialis are herma- 

 phroditic, but, as far as I can see without sections, the specimens 

 at hand of hawaiiensis are of separate sexes. The genital duct opens 

 on a little papilla close behind the dorsal tentacles. 



The rods in the body-wall (Fig. 62. 12) are very varying in 

 size and shape. They are usually curved and faintly swollen on 

 the middle. The ends are often irregularly branched or spiny. In 

 the longitudinal muscles there are numerous oblong bodies (Fig. 

 63. 3), but neither in the polian vesicles nor in the gonads there 

 are found any calcareous deposits. The rods in the tentacles (Fig. 

 63. 1) are irregularly shaped and of very varying size. 



Chiridota hawaiiensis may be regarded as a valid species, dis- 

 tinctly different from rigida. On the other hand it is not quite 

 certain whether it may not ultimately prove to be synonymous with 

 SI u iter's liberata. Still, as this species is so unsatisfactorily and partly 

 erroneously described, there is in my mind no reason for referring 

 the easily recognizeable and as well described specimens from Hawaii 

 to that species. 



In the body-cavity of one of the specimens at hand there are found 

 some interesting parasites. There are seemingly two sorts. The 

 one, of which there are two specimens, is a gregarinian-like organism 

 (Fig. 63. 5-6) which is fastened to the side of the intestine. It 

 consists of two to three large cells of somewhat varying shape. 

 The other sort are small cells with a single, rather short cilium (Fig. 

 63. 4). They are united into small lumps, being free-swimming in 

 in the body-fluid. Whether it is two different stages of the same 

 species, or two different sorts of Protozoans, cannot be ascertained 

 on the specimens at hand. 



? Chiridota stuhlmanni Lampert. 

 Chiridota stuhlmanni Lampert. 1868. Ostatrikanische Holothurien. p. 67. 



„ Clark. 1908. The Apodous Holothurians. p. 115. 

 Fiji. 1 specimen. 



The single specimen at hand measures ca. 5 cm in length by 

 ca. 0,75 cm in diameter. The colour is in alcohol reddish-brown 

 with numerous white wheel-papillae in the interambulacra. These 



