22 PORIFERA. III. 



without spicules, these have surely only been overlooked. Topsent's specimen had lost the upper 

 part, and oscula and pores therefore were unknown to him, and consequently it is incorrect, when he 

 says, that pores pierce the dermal layer singly. 



Locality: Station 92, 64° 44' Lat. N., 32 52' Long. W., depth 976 fathoms; about five more or less 

 damaged specimens. 



Gcogr. distr. The species has been taken 25 right south of the Iugolf locality between 38 

 and 39 Lat. N., at the Azores in depths of 241 and 391 fathoms (Topseut 1. a). 



Remarks. Topsent says (I.e. 1904, 207) that still another species'belongs to Inflatella (=Joyeuxia), 

 viz. ascidioides Fristedt; this species, however, is identical with Histoderma physa, as mentioned above 

 under this species. When Topsent says in his generic diagnosis, that chelae may occur in the genus, 

 this is therefore erroneous. 



Inflatella sp. Vosmer (1885. Bijdr, tot. de Dierk. i2 u Afl. 3^' Gedeelt. 21, PI. I, fig. 8, PI. V, figs. 

 17—19) is a Vosmaeria. 



Cornulum Cart. 



The shape somewhat various, the sponges being erect and obconical or more roundish or semi- 

 globular wit// a broad base. The consistency somewhat bladder-like. Wit// or without fistuloe. Outermost 

 a solid dermal layer with close-lying spicules. The skeleton somewhat solid, consisting of rather thick 

 fibres, dendritical or reticulated. Spongin present. Spicula: Megasclera diactinal, oxea or strougyla, 

 the latter sometimes with the ends finely spinulous: the megasclera are either of one form and equal 

 through the whole sponge, or of two forms, oxea in the skeleton and strougyla in the dermal layer; 

 microsclera : the characteristic microsclera are isochelcr palmatce either solely, or (textile) together 

 with toxa. 



1. C. textile Cart. 

 PI. II Figs. 13—14, PI. V, Fig. 1. 



1876. Cornulum textile Carter, Ann. Mag. Nat. Hist. 4, XVIII, 309, PI. XII, fig. 9, PI. XV, figs. 28 a— b. 

 1887. — , Fristedt, Vega Exp. vetensk. Jakttag. IV, 446. 



1909. — — , Lundbeck, Meddel. 0111 Gronland, XXIX, 443. 



Erect, obconical, with a flat upper surface. Outermost a thin but solid dermal layer. Surface 

 smooth. Oscula lying to one side in the upper, flat plane, fores occupying the rest of the plane. The 

 dermal skeleton formed of rather close-lying spicules in one layer. The inner skeleton strongly developed, 

 regularly dendritical, consisting 0/ fibres which go upwards from the base and bend out to the surface, 

 they arc connected by transverse fibres. Spicula: Megasclera one form, strougyla with finely spinulous 

 ends, o-jj—u-jjd""": microsclera of two forms, cliche palmatce 0-014 — iro //""". toxa, long and fine, 

 o-2i — o-jo""". 



This curious and interesting species has on the whole a shape as described by Carter 1. c. It 

 is erect and has been attached with its lower, quite slightly dilated or swollen base to some object 

 on the bottom; all the specimens in my material are, however, torn off, but the flat attachment is 

 distinct. Carter also says: "attached to hard objects". From the base it rises upwards with a stalk- 



