1913.] Clark, Echinoderms from Lower California. 



"in sea-weed, in 3| ft." near shore on the east side of Cedros Island, west 

 coast of Lower California, March 12, 1911. As the specimens have many 

 fragments of eel-grass attached to them, it is evident that the "sea-weed" 

 referred to is probably eel-grass. Such bottoms are favorite resorts of 

 Stichopus in the West Indian region. 



Holothuria lubrica. 



Selenka, 1867. Zeits. f. w. Zool., Vol. 17, p. 329. 



It is unfortunate that there is no clue to the locality where these speci- 

 mens were taken, for that might throw some light on the northern limit of 

 this Panamic species. It has not previously been reported from north of 

 Mazatlan. These specimens are all adult and in good condition. Eight 

 specimens. 



Holothuria impatiens 



Fi&tularia impatiens FORSKAL, 1775. Desc. Anim., p. 121. 

 Holothuria impatiens GMELIN, 1788. Linne's Sys. Nat. ed. 13, p. 3142. 



With the eight specimens of lubrica was a single, small, poorly preserved 

 holothurian which I refer to this species, not because I believe it to be 

 impatiens but because it is one of those specimens, with papilhe all over the 

 body and with tables and buttons in the skin, which have hitherto been 

 referred to that East Indian species regardless of whether they came from 

 the east or west side of Mexico and Central America. Were there more 

 specimens and from a definite locality, they would probably serve as the 

 basis for a new species, but as the specimen is poor and the locality unknown, 

 no further comments on it are necessary. 



