526 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



Station 4803. 46° 42' N. ; 151° 45' E. ; 

 9 miles southeast of Cape Rollin, Simu- 

 sliir Island, Kurile Islands; 229 fath- 

 oms 



Station 4788. 54° 50' 24" N. ; 167° 13' E. ; 8.8 miles southwest of north point of 



Copper Island, Comandorski Islands ; j Leucosolenia albatrossi, new species. 



57 fathoms ^Grantia bermgiana, new species. 



Station 4789. 54° 49' 45" N. ; 167° 12' 30" E. ; 9.1 miles southwest of north 



point of Copper Island, Coraandorslii Is- J Leucosolenia alhatrossi, new species. 



lands ; 56 fathoms [ Leucosolenia canariensis. 



Station 4790. 54° 38' 45" N. ; 167° 11' 45" E. ; 15 miles northwest of Cape 



Mouati, Bering Island, Comandorski Is- Leucandra splendens, new species. 



lands ; 64 fathoms Leucopsila stylifera. 



Station 4792.- 54° 36' 15" N. ; 166° 57' 15" E. ; 8.2 miles southeast of Cape 



Monati, Bering Island, Comandorski Is- J Leucandra splendens, new species. 



lands; 72 fathoms . \Leucopsila stylifera. 



Sycon simusMrensis, new species*' 

 Grantia nipponica, new species. 

 Acliramorpha diomediae, new species. 

 Leticandra, Jcurilensis, new species. 

 Leucopsila stylifera. 

 Station 4822. 37° 8' 10" N. ; 137° 8' E. ; 4.5 miles northeast of Nosaki, Notojlraa, 



Noto; 130 fathoms Grantia nipponica, new species. 



Station 4877. 34° 20' 30" N. ; 130° 11' E. ; 6.3 miles northeast of Okinoshima, 



Chikuzen, Kiushu ; 59 fathoms Leucandra tuba, new species. 



Station 4894. 32° 33' N. ; 128° 32' 10" E. ; 5 miles southwest of O-sesaki, Hizen, 



Kiushu ; 95 fathoms Leucandra foliata, new species. 



Station 5017. 46° 43' 30" N. ; 143° 45' E. ; 12.5 miles southeast of Cape Tonin, 



Saghalin ; 64 fathoms Heteropia medioarticulata, new species. 



Station 5024. 48° 43' 10" N. ; 144° 59' 30" E. ; northeast of Cape Patience, 



Saghalin ; 67 fathoms Heteropia medioarticulata, new species. 



DESCRIPTION OF THE SPECIES. 

 1. LEUCOSOLENIA ALBATROSSI, new species. 



Plate 84, fig. 1. 



This new species is represented in the collection by two specimens 

 obtained at two closely situated stations off Copper Island. Both are 

 nearly alike in appearance and structure, only differing in size. I 

 have selected the smaller specimen from Station 4788 as the type 

 (Cat. No. 9182 U.S.N.M.), of which a portion (about one-third of 

 the whole) is shown in natural size in plate 84, figure 1. 



/Structure. — The type-specimen forms an irregularly shaped colony 

 consisting of numerous proliferous lobes of varying size and shape. 

 The lobes are somewhat lamellar, irregularly ascending, and folded. 

 They are hollow, the pseudogaster extending into them in the form 

 of slitlike spaces. The pseudoscula, found in a few number on the 

 upper surface of the sponge, measure up to about 7 mm. in diameter. 

 They are each provided with an irregularly undulating membrane. 

 The wall of the pseudogaster, |-1 mm. thick, is made up of a close 

 reticulation of ascon tubes. It appears on the outer surface closely 

 and minutely punctate from the presence of very numerous pseudo- 

 pores, which lead into the interspaces between the ascon tubes. The 



