3G0 PROCEEDINGS OP THE ACADEMY OF 



A young specimen? was dredged in the China Sea in lat. 23, in 20 f. sand. 



Rotula Rumphii Kl. 



A young specimen ? " Taken in 20 f. nullipore bottom, Porto Praya, Capa 

 de Verdes." (W. Stimpson.) 



A species of Eckinoneus, not sufficiently well preserved to admit of determi- 

 nation, was taken at the Loo Choo Islands. 



Fragments of a large Spalangus allied to Sp. purpureus, taken in 50 f. in 

 the Straits of Sangar, on the steamer Hancock, Capt. Stevens. 



Maretia alta A. Ag. 



Differs from the M. planulata Gray, by the great convexity of the abactinal 

 region. The large spines are more slender and much less numerous on the 

 abactinal portion of the test. The whole of this is covered with quite minute 

 silk like bristles, while in the M. planulata many of the bristles are stout and 

 nearly as long as the diameter of the test. The large tubercles are all limited 

 to the lower portion of the interambulacral space except one or two, while in 

 M. planulata the whole interambulacral space is covered with large tubercles. 



" Of a light buff color, above radiated with rows of flesh-colored patches. 

 Taken commonly in 5 f., black sand, in Kagosima Bay." (W. Stimpson.) 



Lovenia subcarinata Gray, Proc. Zool. Soc, Lond. , 1855. 



" In 10 f. mud off Tamtu Island, Coast of China, near Hong Kong. Small 

 ones common in 5 f. mud in the inner bays ; young of a pinkish and fawn 

 color ; adult clear dark brown." (W. Stimpson.) 



It seems to me very doubtful whether this species is a true Lovenia. It 

 has characters which place it close to Breynia, while the pouches at the base 

 cf the large spines are similar to those of Lovenia. The pouches are much 

 more limited in their position than in Lovenia hystrix. 



Lovenia triangularis A. Ag. 



This species is at once distinguished from either the hystrix or the Califor- 

 nia species of this same genus, by the great width of the anterior region s.nd 

 the position of the large tubercles crowded together close to the anterior am- 

 bulacra. The position of the mouth is more central than in other species of 

 this genus. 



" Dark reddish above, sometimes purplish; longer spines annulated with 

 white and red ; below, color much lighter. Dredged in 5 f., black sand, 

 Kagosima Bay." (W. Stimpson.) 



Lbskia mirabilis Gray. Cat. Brit. Mus. 



A single broken specimen of this interesting species. The posterior part, 

 containing the pentagonal pyramid covering the opening of the anus, quite 

 well preserved. 



" In 20 f., mud near Gr. Lema, off Coast of China, near Hong Kong. Dead 

 specimens show that it grows to a length of three inches. Of a pale straw 

 color; feet blood-red, palish." (W. Stimpson.) 



BUHINOCARDIUM STIMPSONII A. Ag. 



More elongated than E. cordatum, to which it is closely allied ; easily re- 

 cognized by the great slope of the anterior ambulacral region ; tubercles of 

 the oral surface distant, position of the genital openings nearer the centre 

 than in the E. cordatum Gray ; the posterior interambulacrum is not promi- 

 nent. 



"Taken in 10 f. sandy mud in Kagosima Bay, Japan. Color somewhat 

 yellowish, hay color." (W. Stimpson.) 



'Another species of this genus, resembling E. gibbosum, was brought from 

 the Cape of Good Hope ; the specimens were probably only young. 



[Dec. 



