336 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



says that tlie color is " in life, variegated above with purple and brown," but else- 

 where (1S71, p. 577) he says, "the dry specimens in best condition are light 

 straw color beneath; the poriferous zones are bright orange; tlie rows of large 

 plates on the back and sides olive-green ; niadreporic plate, large, dark olive-green." 



Ophidiaster ludwigi. 



P. de Loriol, 1900. Revue Suisse Zool., 8, p. 78. 



Tliis species is based upon a single specimen in de Loriol's collection, labeled 

 simply " Perou." R, = 40 mm., r = 9 mm. Rays, 11 mm. broad and 8 mm. 

 high at base. Color brownish violet; papular areas lighter; ventral side, pale 

 yellowish. While at least one species of Ophidiaster may occur in the warmer 

 coastal waters of Peru, it should be remembered that many animals, described in 

 Europe as from Peru, were really from the island of Peru in the Gilbert group, 

 and it is quite possible therefore that de Loriol's Ophidiaster is not fi'om South 

 America. 



Mithrodia bradleyi. 



A. E. Verrill, 1867. Trans. Conn. Acad., 1, p, 288. 



Plate 6, figure 1. 



Although this species was not met with by Dr. Coker and has never been re- 

 corded from South America, I include it for two reasons, neither of which alone 

 would warrant such a course. In the first place, it is a Panamic species with the 

 same general distribution as Pliaria, Phataria, and others, and therefore will prob- 

 ably be found near Zorritos. In the second place, there is a single dry specimen 

 in the M. C. Z. collection, received in 1862 from the Academy of Natun^l Sciences 

 of Philadelphia, labeled simply " Arica, Peru." This specimen is of interest 

 because, while it is quite unlike specimens of bradleyi from the Gulf of Cali- 

 fornia, it resembles very closely in its general appearance, though not in pro- 

 portions, the " peculiar specimen " from the Hawaiian Islands, described and 

 figured by Fisher (1906, p. 1096, pi. 37, figs. 2-3). In the Peruvian specimen, 

 E. = 135 mm., r = 15 mm., 11 = 9r and the color is light brown; other dry 

 specimens are nearly black. Fisher (1906) says the rays are usually unequal, and 

 in his largest Hawaiian specimen, R varied from 198 to 230 mm. In life, the 

 color is more or less vermilion red, light or dark or both. 



Henricia hyadesi. 



Cribrella hyadesi E. Perrier, 1891. Miss. Sci. Cap Horn : Zoul. 3, p. KIOO. 



Plate 2, fiRuie 5. 



This is a species of the far south, which is admitted here on the strength of Meiss- 

 ner's (1896) identification of a number of specimens from Iquique, which is very 

 near the Chile-Peruvian line. It is a small species; in the largest known speci- 



