113 



Synapta maculata (Chamisso & Eysenhardt). 



Holothuria maculata. Chamisso & Eysenhardt. 1821. De ani- 



malibus . . . pag. 325 Pl. XXV. 

 Synapta maculata. Eschscholtz. 1829. Zoologischer Atlas II pag. 12. 

 „ astrolabi. Held. 1857. Ueber die Kalkkörper in der Haut der 

 Synapten. 



„ agassizii. Selenka. 1867. Beiträge zur Anatomie und Syste- 

 matik der Holothurien pag. 361 Pl. XX fig. 122. 



„ maculata. Clark. 1908. The Apodous Holothurians pag. 78. 



(part.) Clark. 1924. The Synaptinae pag. 471. 



St. Crux Island, Zamboanga. II. 1914. Among corals. 8 specimens. 

 Amboina. 12. II. 1922. 1 — 2 m. Among corals. 1 specimen. 



The longest specimen from St. Crux Island measures, though 

 the posterior end is wanting, 138 cm in length by ca. 3 cm in 

 diameter. The colour is olive-green with five olive-brown stripes 

 and numerous white spots. The tentacles are of the same colour 

 as the body, but instead of the white spots there are some fine, 

 white stripes. There are 15 tentacles, and each of them has 30 — 40 

 pairs of digits, not united by a membrane. On the oral disk there 

 are no eye-spots, but on the oral side of the tentacle-base there is 

 a large pigment-spot, which may prove to be an eye. The weak 

 calcareous ring (Fig. 2. 10) is almost quite buried in the voluminous 

 cartilaginous ring. The radial pieces are perforated for the nerves. 

 The numerous polian vesicles are exceedingly long and situated all 

 around the circular canal. The bushy-branched, madreporic canal 

 is mostly single, but sometimes there may be two of them. In 

 one of the specimens from St. Crux Island there are beside the 

 dorsal madreporic canal, numerous small unbranched ones placed 

 all around the circular canal. This however must be regarded as 

 an abnormity, and thus of no clasificatory value, for the specimen 

 mentioned does not in other respects differ from the others. The 

 empty gonads are very long and rather like polian vesicles. They 

 are branched and with no distinct main branch. The anterior end 

 of the intestine is thick and glandular and distinctly different from 

 the rest which has a large loop. The ciliated funnels are all of one 

 sort, and as far as seen of the same size and shape as the funnels 

 in Opheodesoma (Fig. 5. 10). They are found on the reticulated 

 basal part of the mesenteries, but on account of the preservation of 

 the specimens the real shape of the funnels cannot be exactly seen. 



Vidensk.Med d. fra Dansk naturh. Foren. Bd. 85. 8 



