221 



There is only one sort of anchors and anchor-plates present. 

 The anchors (Fig. 33. 1) measure ca. 220 fi In length and 120 fi 

 in width. They are rather beautiful, and regularly shaped. The 

 stock is finely dented and the long and slender arms are distinctly 

 serrate. The anchor-plates (Fig. 33. 2-3) measure ca. 180 [i in length 

 and 140 p in width. The seven large holes as well as the two anter- 

 ior side-holes are distinctly dented. In the posterior end there are 

 usually besides the two posterior side-holes, five small, rounded and 

 smooth holes. The shape of the bridges across the side-holes is 

 somewhat varying and they are often perforated. The posterior end 



Fig. 33. Calcareous deposits and ciliated funnels of Leptosynapta roxtona 

 1-3 X 200, 4 x 450, 5 X 100. 



of the plates is usually distinctly pointed. In the ambulacra there 

 are some few more or less bent rods (Fig. 33. 4). 



This species is distinctly characterized and easily recognized by 

 the shape of the calcareous deposits, and it is evidently not closely 

 related to any of the other known American species of the genus. 



Leptosynapta dolabrifera (Stimpson) Clark (1924). 



Synapta dolabrifera. Stimpson. 1856. Descriptions of some new 



marine Invertebrata. pag. 386. 

 Leptosynapta dolabrifera. Clark. 1908. The Apodous Holothurians.pag.89. 



Clark. 1924. The Synaptinae. pag. 484. 

 PI. 7 fig. 1—6. 



