278 THE VOYAGE OF H.M.S. CHALLENGER.- 



Hei'ojyhila, Steenstrup. 



Iridigorgia, VerriD. 



Chrysogorgia, Duch. and Mich., emend. Verrill. 



All the known species of these genera are from the West Indies. Herophila 

 regia, '^t.=Riisea paniculata, D. and M., is in the Copenhagen and Dublin Museums 

 from Jamaica. Iridigorgia pourtalesi, V., is from Dominica and Guadeloupe. Chryso- 

 gorgia deshonni, D. and M., has been found at the Antilles and Caribbean Sea, and off 

 Cuba. Chrysogorgia fewkesii, V. , was found off St Vincent. 



Dasygorgia, Verrill. 



The species of this genus would appear to be limited to the Atlantic and Pacific 

 Oceans. 



In the Atlantic Ocean, Dasygorgia agassizi, V., was found during the cruise of the 

 "Blake" as high north as lat. 41° 24' 45" N., Dasygorgia elcgans, V., and Dasygorgia 

 squamata, V. , occurs off the Barbados, Dasygorgia splendens, V. , off Santa Cruz, Dasygorgia 

 spiculosa, v., from lat. 25° 33' N., as far south as St. Vincent, and by the Challenger 

 it has been found at lat. 9° 10' S. The largest species of the genus, Dasygorgia 

 melanotrichos,^ was dredged in mid ocean off Ascension Island. 



In the Pacific Ocean eight species have been found, of which one, Dasygorgia flexilis, 

 occupies an isolated position, being found off the coast of Chiloe ; the others are found 

 scattered over the western shores of the Pacific in an area extending from lat. 35° 11' N. 

 to lat. 29° 55' S. The distribution extending 20 degrees more south on the western 

 shores of the Pacific Ocean than oh the eastern shores of the Atlantic Ocean. These 

 Pacific Ocean species may be thus grouped. Japan — Dasygorgia geniculata, Dasygorgia 

 japonica ; Philippines — Dasygorgia squarrosa, Dasygorgia genicidata, and Dasygorgia 

 axillaris ; Papua — Dasygorgia cupressa ; Kermadecs — Dasygorgia expansa, Dasygorgia 

 acanthella, and Dasygorgia axillaris. 



Family II. I s i d .-e. 



Ceratoisis, Perceval Wright. 



In the Atlantic Ocean the distribution is confined to its northern area ; Ceratoisis 

 grayi., Perc. Wright, was found off the Cape Verde Islands ; another species, Ceratoisis 

 palmse, occurs off" the Canary Islands ; VerriU describes as new Ceratoisis ornata from 

 off Nova Scotia, Ceratoisis (Lejndisis) caryophyllia, from Guadeloupe, Ceratoisis 

 (Lepidisis) longiflora, and Ceratoisis (Lepidisis) vitrea from the West Indies ; Studer 

 describes Ceratoisis siemensii from off Newfoundland. 



' Vide Appendix, p. 275. 



