237 



wall, but ca. one third of the tentacle-length out on the tentacle- 

 stem, and is indifferently found on the tentacle at the right or the 

 left side of the mid-dorsal interambulacrum. The ciliated funnels 

 (Fig. 40. 21) are, as described by Clark, of two different sorts, 

 the larger being labiate. 



The anchors from the posterior end of body measure ca. 150 in 

 in length and 70 fi in width. They are rather slender (Fig. 40. 12), 

 their arms being serrate. The anchors from the anterior end of 

 body (Fig. 40. 13) measure ca. 120 // in length and 70 fv in width. 

 Their arms are rather short and thick and usually smooth or nearly 

 smooth. The anchor-plates (Fig. 40. 14-18) measure ca. 110 jti in 

 length and 80 fi in width. They are not much different in the two 

 ends of body, but in the posterior end there are some smaller ones 

 (Fig. 40.17), which do not measure more than ca. 70 /u in length. 

 The miliary granules (Fig. 40. 22) are either C-shaped rods or 

 small rings, and they are not different in the two ends of body. 

 The rods in the digits (Fig. 40. 20) are not different from those 

 in the tentacle-stem. They are rather large and usually slightly bent. 

 Their outline is often undulating and -their ends are faintly enlarged 

 and perforated. 



The specimens here described are in several characters slightly 

 different from those described by Clark in 1899. Clark does not 

 say from where his specimens came, but they were probably found 

 at Woods Hole. Possibly future investigations will show that the 

 specimens from Woods Hole are specifically different from those 

 from Bermuda, but for the present we do not know more than 

 one species of Epitomapta from the Atlantic coast of America, though 

 we may distinguish between the typically red form and the white 

 variety. 



Patinapta n. g. 



Genotype: Synapta ooplax v. Marenzeller. 



Diagnosis: Tentacles pinnate, usually twelve. Sense organs 

 never in the form of pigment-eyes, but occur as sensory cups on 

 the oral side of the tentacles. Radial pieces of calcareous ring 

 perforated for the nerves. Cartilaginous ring wanting. Polian ve- 

 sicles few, 1 — 8. Stone-canal single, unbranched. Shape of ciliated 

 funnels varying. Ciliated funnels being only found on the inner side 

 of body-wall. Calcareous deposits in body-wall: anchors, anchor- 



