312 HAWAIIAN AND OTHER PACIFIC ECHINI. 



Primary spines very dark (almost black) at base, not banded; poriferous area narrow, 



pore-pairs small in a vertical series close to margin of ambulacrum Hardwickii. 



Primary spines not very dark at base; poriferous area not very narrow; pore-pairs 

 medium or large, in an interrupted vertical series, not close to margin of ambu- 

 lacrum, one or more miliary tubercles being present between some pore-pairs 

 and the margin. 



Primary spines, at least actinally, banded; all ocular plates excluded from periproct toreumaticiis. 

 Primary spines light colored, not banded; in adults (over 20 mm. h. d.) ocular 

 I is usually insert Reevesii. 



Temnopleurus Hardwickii A. Ag. 



Toreumatica Hardwickii Gray, 1855. Proc. Zool. Soc. London, p. 39. 

 Temnopleurus Hardwickii A. Agassiz, 1872. Rev. Ech., pt. 1, p. 166. 



The specimens taken by the "Albatross" range in diameter from 13 to 31 mm., 

 but show very httle diversity in coloration. There are some differences in the 

 size, depth, and form of the pits but they do not seem to be very remarkable. 

 It is a little odd that the "Albatross" did not meet with this species during her 

 extended third visit to Japan, but only on her second voyage and then only at 

 the following adjoining stations: — 



Station 3723. Off Yokkaichi Light, Honshu Island, Japan. 13-16 fathoms. 

 M., s., p., sh. 



Station 3725. Off Noma Saki, Honshu Island, Japan. 13 fathoms. S., 

 sh., g. 



Nine specimens. 



Temnopleurus toreumaticus Agassiz. 



Cidaris toreumatica Leske, 1778. Add. ad Klein, p. 155. 

 Temnopleurus toreumaticus L. .Vgassiz, 1841. Int. Mon. Scut., p. 7. 



A single specimen, 42 mm. in diameter, is the only representative of this 

 well-known si)ecies in the "Albatross" collections. It is dark colored and the 

 banding of the primaries is only noticeable actinally. This is in striking contrast 

 to the color of a fine series of specimens from the Persian Gulf, which the M. C. Z. 

 received from Capt. F. W. Townsend in 1895. In these the ground color is very 

 light, usually a pale croam-color, in some specimens with a more or less marked 

 olive-green cast, and the primary spines are very conspicuously banded with 

 brownish or j)urplish rod. These specimens appear to be identical with those 

 from the Ued Sea (Arabian coast) described by Kcehler (1900. Bull. Paris Mus., 

 XI, p. 4()()) as a new species, T. Pcrczi. Kcrhler fails to mention a single charac- 

 t(>r by which Pcrczi is to be distinguished from toreumaticus, except perhaps 



