238 



plates and miliary granules, in tentacles rather large rods. Shape 

 of anchors from posterior end of body rather peculiar (Fig. 42. 1 & 5) 

 and typical of the genus. Anchors from anterior end of body always 

 different from those more posterior, and always much shorter, with 

 short and thick arms. Shape of anchor-plates is as that of anchors 

 very characteristic of the genus, those in the anterior end being 

 usually much larger and never smaller than those posteriorly situ- 

 ated. Anterior end of the anchor-plates from the anterior end of 

 body perforated by a varying number of holes, the larger of 

 which are often somewhat dented. A bridge is wanting and the 

 articulation with the anchors often very faint or quite wanting. 

 The anchor-plates from posterior end of body cannot be divided 

 into an anterior part and a distinct articular end. All articulation 

 with the anchors may be wanting, and the plates may be highly 

 reduced. 



This genus is in several characters closely related to Lepto- 

 synapta, but the peculiar shape of the anchors and anchor-plates 

 separates it distinctly from that genus. For the present we do not 

 know more than two species which may be referred to Patinapta. 

 Clark assumes that Bedford's variety laevis is not different from 

 v. Marenzell er's species, but the specimens at hand show that 

 laevis is specifically different from it, und must be regarded as a 

 valid species. Both these species are from the Indo-Pacific ocean. 

 The specimens of a "Synapta" found by Voeltzkow at Zanzibar 

 may ultimately prove to be a separate species of this genus, and 

 the same species as Lampert has described as Synapta ooplax 

 (cfr. Lampert. Ostafrikanische Holothurien. pag. 66). 



Patinapta ooplax (v. Marenzeller). 



Synapta ooplax. v. Marenzeller. 1881. Neue Holothurien von Japan 

 und China, pag. 122. Pl. IV fig. 1 a— d. 

 „ „ Lampert. 1885. Die Seewalzen, pag. 222. 



„ „ Britten. 1906. Holothurien aus dem Japanischen und 



Ochotskischen Meere, pag. 150. 

 Leptosynapta ooplax. Clark. 1608. The Apodous Holothurians. pag. 24 

 & 90. 



„ „ O h s h i m a. 1 9 1 3. Synaptiden von Misaki. pag. 254. 



Pl. VI fig. 5. 



„ „ Ohshima. 1914. The Synaptidae of Japan, pag. 464. 



