NO. 2247. SPONGES FROM NORTHWESTERN PACIFIC— HOZAWA. 537 



thick at base. Paired rays nearly as long as but slightly narrower 

 than basal ray; curved in accommodation to the curvature of ex- 

 halant canal, about 80 ]x long and 6 [l thick at base. Apical ray (/') 

 slender, sharply pointed, angularly curved in the middle, 30 [x long 

 and 4 [i thick at base. 



Triradiates of oscular collar (g) strongly sagittal. Basal ray 

 much longer and thinner than paired raj^s, straight, finely pointed, 

 310 [jL long and 10 \k thick at base. Paired rays very strongly diverg- 

 ing, standing nearly at right angles to basal ray, obsoletely showing 

 double curvature, 160 [x long and 14 [jt, thick at base. 



Quadriradiates of oscular collar (A) like the triradiates of same, 

 except in the presence of apical ray. Apical ray much shorter than 

 facial rays, never attaining so great a length as in gastral quadri- 

 radiates. 



Oxea (^) slightly curved or nearly straight, sharply pointed at 

 both ends, 130-300 [x long and 12 \k thick in the thickest parts. 



Oxea of oscular collar (j) slightly curved and more or less irreg- 

 ular in outline, nearly uniformly thick for the most part of their 

 length but tapering toward the pointed ends. Close to one end, 

 provided with a feebly developed nodiform ring. They are 240-550ju. 

 long and l^-lQfx. thick in the middle. 



Linear spicules of oscular collar slender, hair-like, straight, sharply 

 pointed at both ends, the thickest part lying nearer one end than the 

 other, 160-280/x long and Sfi thick. 



Localities. — Off Nosaki, Notojima, Province Noto on the western 

 coast of Japan (Station 4822, 130 fathoms) ; off Cape Rollin, Simu- 

 shir Island, Kuriles (Station 4803, 229 fathoms). 



Bemarks. — The specimen from Station 4803 (Cat. No. 9172, 

 U.S.N.M.) measures only about 11 mm. in total length and 2| mm. 

 in maximum breadth, the wall being nearly 0.4 mm. thick. It differs 

 from the type-specimen in the smaller size of its spicules, in the less 

 number of the layers of tubar triradiates, and in the presence of 

 hair-like oxea projecting from the dermal surface. The most re- 

 markable feature of the present species consists in the excessive 

 prodongation of apical rays in gastral quadriradiates. 



6. GRANTIA BERINGIANA, new species. 



Plate 85, fig. 9. 



A single specimen in the collection has served as the type of this 

 new species (Cat. No. 9183, U.S.N.M.), Sponge (pi. 85, fig. 9), a soli- 

 tary individual, cylindrical, slightly latellay compressed, broadened, 

 and somewhat bent in the basal parts. The osculum at the upper 

 end has a thin margin. The dermal surface is fairly hispid, due to 

 projecting oxea. The gastral surface appears nearly smooth to the 

 naked eye, in spite of numerous fine apical rays of gastral quadri- 



