154 



in the other characters it differs so much from both these species 

 that it cannot be referred to any of them. 



Synaptula 0rsted. 



Synaptula. 0rsted. 1849. Videnskabelige Meddelelser fra dansk natur- 



historisk Forening, pag. VII. 

 Heterosynapta. Verrill. 1867. On the geographical distribution of the 



Echinoderms of the west-coast of America, pag. 346. 

 Chondro cloea. 0stergren. 1898. Das System der Synaptiden, pag. 1 13. 

 Synaptula. Fisher. 1907. Hawaiian Holothurians, pag. 117. 



Clark. 1908. The Apodous Holothurians, pag. 80. 



This genus was established by A. S. 0rsted for some viviparous 

 West-Indian specimens, which he named Synaptula vivipara. The 

 reexamination of the type-specimens of vivipara as well as 0rsted's 

 beautiful, but hitherto unpublished, figures of them show that 

 Fisher and Clark are doing right in regarding Synaptula vivipara 

 0rsted as synonymous with Holothuria hydriformis Lesueur, which 

 species for that reason must be regarded as the genotype. 



In "The Apodous Holothurians", pag. 80, Clark writes that the 



genus Synaptula "contains an unusually large number of poorly 



described or imperfectly known species". In regarding the four 



species: _ , 0 , . 



reciprocans (Forskal) [nigra] 



striata (Sluiter) [recta] 



aspera (Sluiter) [virgata] 



var. maculata (Sluiter) [reticulata] 



as synonymous with the species in [], he refers only the following 

 eight species to the genus: 



nigra (Semper) 

 hydriformis (Lesueur) 

 psara (Sluiter) 

 indivisa (Semper) 

 recta (Semper) 

 virgata (Sluiter) 

 lactea (Sluiter) 

 reticulata (Semper) 



These twelve species are all except nigra and indivisa, represented 

 in the collection at hand, and the specimens at hand shows that 



