209 



Leptosynapta tenuis. Verrill. 1867. Notes on Radiata, pag. 325. 

 Synapta gracilis. 0stergren. 1898. Das System der Synaptiden. 

 — inhaerens. Clark. '1899. The Synaptas of the New England 

 coast. Pl. X fig. 3 and Pl. XI fig. 1, 3, 5, 7. 

 Leptosynapta inhaerens. Clark. 1908. The Apodous Holothurians, pag. 

 32 & 88. 



Leptosynapta inhaerens. Clark. 1908. The Synaptinae, pag. 483 PI. 

 VII fig. 12—16. 



New Haven. 5 specimens. 



Woods Hole. 1927. Several specimens. 



The specimens from Woods Hole measure up to 30 cm in 

 length by ca. 1 cm in diameter. The colour is pale yellow with 

 numerous white papillae. They have twelve pinnate tentacles, each 

 with 9 — 1 1 digits (4 — 5 on each side) of which the terminal one is the 

 longest. On the oral side of each of the tentacles there are 15 — 25 

 sensory cups. Eye-spots are wanting on the oral disk. The calcareous 

 ring (Fig. 28. 2) is well developed. The radiais are perforated for 

 the nerves and on the exterior side there are muscular impressions. 

 A cartilaginous ring is quite wanting. There are few, 1 — 3 polian 

 vesicles, and a single stone-canal. The gonads are long and branched 

 and the genital opening is seen on a little wart between the dorsal 

 tentacles close to their posterior side. The oesophagus is thin and 

 the stomach is different from the intestine which is lacking a loop. 

 The ciliated funnels are numerous and found in the usual three 

 interambulacra. The larger part of the funnels are small and "funnel- 

 shaped" (Fig. 28. 1), but in the posterior end of body there are 

 some very large ones of a quite different shape. The shape of 

 these large funnels is rather like that of the flowers in Lamium 

 (Fig. 28. 1), and they are arranged at regular intervals. They are 

 often wanting or nearly wanting in the dorsal interambulacrum. 



The common anchors in the posterior end of the specimens 

 (Fig. 28. 4) measure ca. 200 // in length by 110 /< in width. The 

 arms are slender and irregularly dented. Among these anchors 

 there are often found a few smaller ones (Fig. 28. 3), which measure 

 but ca. 140 // in length by 60 // in width. The arms are not so 

 slender as in the large anchors, but as these latter distinctly dented. 

 In the anterior end of the specimens the anchors are of a different 

 shape (Fig. 28. 5) and usually not toothed on the arms. They 

 measure here ca. 140 /i in length by 90 fi in width. The anchor- 



Vidensk. Medd. fra Dunsk naturh. Foren. Bd. 85. 14 



