358 PROCEEDINGS OF THE ACADEMY OP 



Toreumatica concava Gray, Proc. Zool. Soc. Lond. 1855. 



" Common ; found covering the bottom in some spots off the Coast of China, 

 near Hong Kong, in 15 20 f., mud. Also found sparingly in the inner bays 

 in 4 to 6 f." 



"Cream colored, with five broad rays of purplish above." (W. Stimpson.) 



Tbmnopleurus Rebvesii A. Ag., Bull. Mus. Comp. Zool.. 1863. 



" In 8 f., shelly ground, channel of Hong Kong harbor, China. Color pale 

 yellowish or greenish yellow ; spines annulated with dark violet." (W. 

 Stimpson.) 



ANTHECHINUS A. Ag. 



Small pentagonal sea-urchins, with prominent abactinal system and open- 

 ings at angles of plates. The ambulacra convex, projecting beyond the level 

 of interambulacral space, which is quite depressed. Median ambulacral and 

 interambulacral space free from spines. The bare space follows the line of 

 plates and is not sunken, as in Microcyphus and Tcmnopleurus, but slopes gradu- 

 ally to the edge of the plate. Tubercles very minute, somewhat larger round 

 the mouth, where they are arranged in diverging rows, extending about half 

 way to the abactinal area, while they are scattered irregularly on the portion 

 of the plates, which they cover partially. Pores arranged in single pairs in 

 a vertical row. 



Anthechinds roseos A. Ag. 



Genital plates perfectly smooth, with a large opening, like a notch, in the 

 edge of the plate. Anal plates numerous, covered with minute spines. The 

 bare space is violet in dry specimens and the spines are greenish. The spines 

 are exceedingly slender and sharp, resembling those of Salmacis, though much 

 smaller in proportion to the size of the sea-urchin. Polar diameter, as great as 

 the transverse. "Japan." (W. Stimpson.) 



TEMNOTREMA A. Ag. 



Small sea-urchin, almost globular, with marked grooves at the sutures of 

 the plates, as in Salmacis. Two principal vertical rows of tubercles ; smaller 

 tubercles crowded irregularly over the rest of the plate. Abactinal system 

 pentagonal, with prominent angles, the anal system consisting of four plates 

 a3 in Eehinocidaris. Spines like those of Salmacis, though finer in proportion 

 and more deeply grooved. Pairs of pores arranged in a single vertical row. 



Temnotrema sculpta A. Ag. 



Test, mottled with white, violet and patche of brown, has a greenish tinge ; 

 spines of lower surface, near the mouth, much larger than those of the abac- 

 tinal part of the test. Actinal system smooth, with the exception often large 

 plates round the opening of the mouth ; spines ringed with white and violet. 



"Kagosima Bay, Japan." (W. Stimpson.) 



Hipponoe violacea A. Ag., Bull. Mus. Comp. Zool., 1863. 



, " Taken by the natives by diving at Hilo, Hawaii." (W. Stimpson.) 



Found under stones on gravelly bottom below 1. w. m., especially among 

 sea-weeds. 



" Katawaisima Straits, Island of Ousima. Body purplish red ; spinee 

 white." (W. Stimpson.) 



"Loo Choo Islands." (W. Stimpson.) Fragments only. 



Mespilia globulus Ag., Cat. Rais. 

 "Ousima, Japan." (W. Stimpson.) 



Two species of Fibularia, one from Kagosima and the other from the China 

 Seas, too imperfect for description. 



Echinocyamus tarentinus Ag., Cat. Rais. 



"Taken in 15 f. sand. Funchal Bay, Madeira." (W. Stimpson.) 



[Dec. 



