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. 



Geogr. distr. The species has been taken 25 right south of the Ingolf locality between 38 

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



Remarks. Topsent says (1. c. 1904, 207) that still another species^belongs to Infiatella (=Joycuxia), 

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

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

 this is therefore erroneous. 



Infiatella sp. Vosmer (1885. Bijdr. tot. de Dierk. 12"- Afl. 3 die Gedeelt. 21, PI. I, fig. 8, PL V, figs. 

 1719) is a Vosmaeria. 



Cornulum Cart. 



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

 globular with a broad base. The consistency somewhat bladder-like. With or without fistula-. 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 strongyla, 

 the latter sometimes with the ends finely spinulous; the mcgasclera are either of one form and equal 

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

 microsclera: the characteristic microsclera are isochel<R palmatce either solely, or (textile) together 

 with toxa. 



i. C. textile Cart. 

 PI. II Figs. 1314, PI. V, Fig. i. 



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. om Gr0nland, XXIX, 443. 



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

 smooth. Oscula lying to one side in the upper, fiat plane, pores 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 of fibres which go upzvards from the base and bend out to the surface, 

 they are connected by transverse fibres. Spicula: Megasclera one form, strongyla with finely spinulous 

 ends, o'j.2 o'jj6 mm ; microsclera of two forms, chelce palmatce 0-014 o'oiy""", toxa, long and fine, 



O'2l O'JO mm . 



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- 



