NATURAL SCIENCES OP PHILADELPHIA. 359 



Also a species of Echinocyamus; " taken in abundance in 5 f. sand. Kago- 

 sima Bay, Japan. Color waxen white." W. Stimpson.) 

 "Ousima." (W. Stimpson.) 



Echinocyamus australis Ag., Cat. Rai8. 



" Coral Sea of Australia, Groper Shoal." (W. Stimpson.) 



A species of Laganum from the Loo Choo Islands, too imperfect for ac- 

 curate description. 



Laganum Putnami Barn. MS. 



Resembles Lag. depressum, Ag., in its general outline, but has, like Lag. 

 Pero/ii, the genital opening far outside the rosette. The ambulacral rosettes 

 are very pointed and slender. Anus nearer the edge than in other species of 

 this genus ; lower surface deeply grooved by the straight ambulacral furrows ; 

 mouth not sunken as in Peroni. 



" Ousima." (W. Stimpson.) 



Rumphia Lesueuri A. Ag., Bull. Mus. Comp. Zool., 1863. 



" Color pale red above, with five curves of paler color near edge of inter- 

 ambulacral spaces. Below, pale yellowish green. Abundant in 6 10 f. 

 sandy mud among the Islands near Hong Kong, China." (W. Stimpson.) 



Echinarachnius asiaticus Mich , Rev. et Mag. Zool., 1859. 



" Covers the coarse, black, sandy floor of the sea off the coast of Kamt- 

 schatka, near Petropaulski. Found at various depths from 30 to 70 fathoms ; 

 color reddish brown when alive." (W. Stimpson.) 



SCAPHECHINUS Barn. MS. 

 This genns is closely allied to Echinarachnius. It has, however, remarkable 

 points of difference in the small number and great thickness of the walls join- 

 ing the two floors, as well as in the mode of branching of the grooves on the 

 lower surface, which is exactly that of the fossil genus Scutella. It has the 

 ambulacral rosette of Echinarachnius and the depression of the interambulac- 

 ral space on the upper surface of Arachnoidal. 



Scaphechinus mirabilis Barn. MS. 



Test depressed in interambulacral spaces ; outline somewhat scolloped ; 

 genital openings outside of the pentagon of the centre of the rosette. 



"Seined on sandy shores. The sandy bottom of Hakodadi Bay, (north 

 side,) from 1. w. m. to 1 2 f., is covered so closely with this species that no 

 space of a square foot can be found free of them. In some places a boat-hook 

 can not be thrust to the bottom without striking one. Color above deep 

 purplish crimson, below light olive. The deep crimson pigment comes off 

 easily and stains the hand. Hakodadi, Island of Jesso." (W. Stimpson.) 



Fragments of a new species of Mellita from the China Seas, in lat. 23. 



LOBOPHORA TEXTA A. Ag. 



Resembles in outline the L. trunca/a, and would readily be referred to 

 that genus from its general appearance. The position of the anus is also 

 somewhat more marginal than in L. bijissa, being placed about opposite the 

 middle of the lunule. On opening it we find that the lower floor is covered 

 with a delicate grooved work, as in Lobophora, the grooves being mainly ar- 

 ranged on both sides of the ambulacral tubes, forming a beautifully carved 

 elongated rosette round the mouth. We find nothing of this arrangement in 

 L. bijissa. Lunules small, entirely closed, placed some distance from the 

 margin. Teeth are much larger in proportion to the size of disk than in Lo- 

 bophora bifasa. 



" Dredged in 12 f. clean sand at Tancgasima, (Isl. south of Japan,) also 

 in 10 f. sand off the east coast of Ousima. Color dark red, darkest below." 

 (W. Stimpaon.) 



1863] 



