ON SOME JAPANESE CALCAEEOUS SPONGES. 33 



syconoid type of its canal system, in which respect it differs from 

 all other members of the genus. It is evidently a species closely 

 related to Heferopia glomerosa}^ 



Localities. — Koajiro and Aburatsbo, near the Misaki Marino 

 Biological Station. 



Genus Amphiute Hanitsch. 



7. AmpJiiute ijiinai, u. sp. 



(PI. I., fig. 9 ; PL n., fig. 17 ; testfig. 7). 



This new species is represented in the collection by three 

 specimens, aU obtained at Döketsba, Sagami Sea, from a depth 

 of 215-257 m. 



The first specimen (Sei. Coll. Spec. No. 18), which I make the 

 type of the species, is a single person of a somewhat curved and 

 laterally compressed, elongate cylindrical form, broadest at a part 

 a little above the middle. The total length is about 60 mm. 

 and the greatest breadth 12 mm. The osculum is in part 

 damaged, besides being in a collapsed state. It shows neither 

 an oscular fringe nor a collar. The gastral cavity is deep 

 and extends throughout the entire length of the sponge. The 

 lower part of the sponge is drawn out in a stalk-like manner, 

 the body in this region being narrowed to a breadth of 5 mm. 

 The dermal surface of the sponge, except in the lower parts, is 

 smooth and shows fine longitudinal striation due to the presence 

 of large oxea in dermal cortex. Thickness of the wall, as meas- 

 ured in the broadest part of the sponge, is about 1 mm. The 



1) Leuronia (jlomerosa Boweebank, Proc. Zool. Soc. London, 1873, pp. 17-19, PI. IV, Figs. 

 1-G; IMeroim. glomerom, Dendy, 1î)15 (4), pp. 83-86, PI. I, Figs. 3, 3a, 3b; PI. H, Figs. 8a-8g. 



