310 bulletin: museltm of comparative zoology. 



Ophiactis hirta. 



Lyman, 1879. Bull. M. C. Z., 6, p. 39. 1882. Challenger Oph., pi. 20, 

 fig. 4-6. 



The unique holotype of this species was taken in 400 fms., off 

 Sydney, New South Wales. The specimen from the north Atlantic, 

 taken by the Princesse-Alice and referred to this species by Koehler 

 had only six arms and the disk was only 3 mm. in diameter. It was 

 possibly a young 0. abyssicola but a reexamination of the upper arm- 

 plates would no doubt determine that. 



Ophiactis asperula. 



Ophiolepis asperula Philippi, 1858. Arch, f . naturg., 24, 1, p. 267. 



Ophiactis asperula Liitken, 1859. Add. ad hist. Oph., pt. 2, p. 130. H. L. 



Clark, 1915. Mem. M. C. Z., 25, pi. 10, fig. 11, 12. 

 Ophiactis magellanica Ljungman, 1866. Ofv. Kongl. vet.-akad. Forh., 23, 



p. 164. 



This species is characteristic of the southern coasts of South America 

 on both sides of the Strait of Magellan. 



Ophiactis hemiteles. 



H. L. Clark, 1915. Mem. M. C. Z., 25, p. 262, pi. 10, fig. 7, 8. 



The only known specimen of this species is from the Murray Islands 

 in Torres Strait. 



Ophiactis mulleri. 



Lutken, 1856. Vid. med., p. 12. H. L. Clark, 1915. Mem. M. C. Z., 26, 



pi. 11, fig. 5, 6. 

 Ophiactis Ijungmani Marktanner-Tumeretscher, 1887. Ann. K. k. naturh. 



Hofmus. Wien, 2, p. 297, pi. 12, fig. 9-11. 

 Ophiactis dispar VerriU, 1899. Bull. Univ. Iowa, new ser. 1, no. 6, p. 31, pi. 



8, fig. 3-3c. 

 Ophiactis longibrachia H. L. Clark, 1901. Bull. U. S. F. C, 2, p. 246, pi. 14, 



fig. 1-5. 



The exact range of this species is uncertain because young and half- 

 grown specimens are so easily confused with 0. savignyi, but it is 

 supposed to extend throughout the West Indian region from South 



