REPORT ON THE ALCYONARIA. 281 



Stenella, Gray. 



The species of this genus appear to be widely scattered. Stenella imhricata (Y. Johns.), 

 the first species described, was taken off Madeira ; Stenella johnsoni was dredged off 

 Ascension ; Stenella acanthina occurs off the Rio de la Plata ; Stenella spinosa was found 

 off Prince Edward Island ; Stenella gigantea was found at Kandavu, in the Pacific Ocean, 

 while Stenella doederleini was dredged off Yokohama, Japan. 



Thouarella, Gray. 



The distribution of the species of this genus in the Atlantic Ocean is limited to the 

 Falkland Islands, where the type specimen of Thouarella antarctica (Val.) was found by 

 du Petit Thouars and Capt. J. Clark ; to the coast of Patagonia, where Thouarella 

 kollikeri was dredged ; and to Tristan da Cunha, where Thouarella affinis was found. 

 Thouarella antarctica (Val.), Thouarella variabilis and vars., Tliouarella affinis, var., 

 have been taken at Prince Edward Island and Heard Island in the Antarctic Ocean. In 

 the Pacific Ocean two species occur, Tliouarella moseleyi off the Kermadecs, and 

 Thouarella hilgendorji (Std.), which has been met with both south of Papua and at 

 Japan. 



Amphilaphis, Wright and Studer. 

 The only species of this genus [Amphilaphis regularis) was taken at Tristan da Cunha. 



Plumarella, Gray. 



Of the three species described, one, Plumarella pourtalesi, Ver., has been found off the 

 coast of Florida, a second, Phimarella delicatissima, off Port Grappler, Patagonia, and the 

 third, Plumarella penna (Lamk.), is referred by Milne-Edwards to Australia. 



Caligorgia, Gray. 



The distribution of the species of this genus is rather peculiar ; in the Atlantic Ocean 

 Caligorgia verticillata (Pall.) is found off the north-west coast of Africa, and extending 

 into the Mediterranean, while Caligorgia gracilis (M.-Edw.) is found in the West 

 Indies. In the Indian Ocean, on the authority of a specimen in the Bern Museum, 

 Caligorgia flahellum (Ehrb.) occurs at the Mauritius. In the Pacific Ocean Caligorgia 

 ventilabrum, Std., is found off the north of New Zealand, Caligorgia sertosa south of 

 Papua, Caligorgia flahellum (Ehrb. ) occurs at Japan and at Formosa, while Caligorgia 

 compressa (Ver.) occurs at the Aleutian Islands. 



(ZOOL. CHALL. EXP. — PART LXIV. 1889.) SsS 36 



