THF, SYSTEM OF PHYLLOFHORIN^E. 



75 



madreporite which is i — 1.5 mm. in diameter. 



Digestive tube. — Variable in calibre as well as in length. About 

 15 mm. behind the calcareous ring, the tube enlarges itself to form a 

 stomach of about 2 mm. diameter. The third limb of the intestine 

 is suspended by a mesentery attached to the left of midventral radial 

 muscle. The entire digestive tube is 72 mm. long in a specimen of 

 51 mm. length; while in a contracted individual 48 mm. long, it 

 measured as much as 190 mm. in length. 



Respiratory trees. — Two in number, each running along dorsal 

 lateral interradius ; their length may reach to three-fourths that of 

 extended body. 



Genital tubes. — In two tufts, the tubes branching once or twice 

 near base. Genital papilla could not be made out. 



Remarks. — As regards the size and color of this species BEUL 

 hns given no statement. The identification of the above described 

 specimens with the species of BELL seems to be justified by the 

 following facts : 1) the presence of twenty-five tentacles is a feature 

 unique in the Cucumariida: ; 2) the localities of both Bell's and 

 AugUSTIN's specimens cither agree with those of mine or stand with 

 these under the influence of the same current ; 3) " the complete 

 absence of rods or spicules from the walls of body or tube-feet " in 

 my specimens excepting the youngest individual observed by me ; 4) 

 the presence of " terminal plates of the tube-feet, and the delicate 

 and elegant bars which are found in the tentacles " ; and 5) the 

 weak development of calcareous ring, of which BELL found no sign 

 but was supposed by LUDWIG [26, P- 83] to be present in an im- 

 perfect condition. 



As to the two retractors approaching and uniting with each 

 other as given by BELL, I should say with LUDWIG [24, p. 1239] 

 that such an occurrence may be met with in individual cases but 

 does not seem to constitute a constant character of diagnostic value. 

 Besides from v. MarenzELLEr's observation [31, p. 135], I can give 



