302 bulletin: museum of comparative zoology. 



notable, extending from the vicinity of the Azores Islands in 361-508 

 fms. to the southeastern coast of the United States, and the Gulf of 

 Mexico in 26-225 fms., and from the Gulf of Panama westward to 

 the Indian Ocean. Specimens are known from near the Kermadec 

 Islands in 600 fms., from southeastern Japan, 120-720 fms. and from 

 near Ceylon, 719 fms. In the Panamic region, this species was taken 

 in 899 fms. while in the East Indies, the Siboga took one specimen in 

 1,048 fms. The specimens recorded from less than 100 fms. are all 

 young and the possibility of erroneous identifications is great. Indeed, 

 the specimen recorded in Mem. M. C. Z., 25, p. 264, from Bermuda, 

 proves to be 0. lymani. 



Ophiactis macrolepidota. 



Marktanner-Turneretscher, 1887. Ann. K. k. naturh. Hofmus. Wien, 2, 

 p. 298, pi. 12, fig. 12-13. 



This species is as yet known only from the type-specimen in Vienna. 

 It came from " Sidney," presumably Sydney, New South Wales. 



Ophiactis luteomaculata. 

 H. L. Clark, 1915. Mem. M. C. Z., 25, p. 263, pi. 11, fig. 7, 8. 



It is possible that this species is identical with the preceding, but 

 until more and better material is available, their relation cannot be 

 determined. The type of 0. hdcomandata is from the Murray Islands, 

 Torres Strait, but other specimens are known from the coast of New 

 South Wales, in 27-29 fms. 



Ophiactis brachyura. 

 Dfiderlein, 1898. Jena, denkschr., 8, p. 485, pi. 37, fig. 2, 2a. 



This species is based on an obviously very young specimen from 

 Amboina, but the exceedingly short arms and relatively large number 

 of arm-spines are distinctive features. 



Ophiactis nam a. 



Lyman, 1879. Bull. M. C. Z., 6, p. 38. 1882. Challenger Oph., pi. 20, 

 fig. 16-18. 



This species is known only from the Kermadec and Fiji Islands, 

 210-610 fms. 



