240 



Phthinobranchii 



The species, few in number, known as sea-moths and sea- 

 dragons, rarely exceed four inches in length. They are found 



FIG 190. Sea-moth, Zahses umitengu Jordan & Snyder. Misaki, Japan. 

 (View from below.) 



in the East Indies and drift with the currents northward to 

 Japan. The genera are Pegasus, Parapegasus / and Zalises. 

 The best-known species are Zalises draconis and Pegasus voli- 

 tans. 



No fossil species of Pegasidce are known. 



