med Bowerbanks Halicnemia, som Marenzeller gjør, gaar 

 derimod ikke an, hvis jeg skal dømme efter et Præparat 

 af Spiklerne af Halicnemia patera, som jeg har faaet af 

 Revd. a. M. Normann. 



Findested. 



Station 29. 260, 323. 



Rinalda uberrima. 0. Schmidt. 



Af denne Form er der fanget en Masse Exemplarer 

 af meget forskjellig Størrelse, som det kan sees af Tab. VI. 

 Fig. 19. Jeg henfører til denne Form en Svamp, som er 

 afbildet Tab. VI. Fig. 10. skjønt den ikke besidder saa 

 store Papiller som de øvrige Exemplarer, men dens Byg- 

 ning forresten er ganske den samme som hos Rinalda, idet 

 den hai- en tynd, 1 — 2""" tyk Skorpe af lysere Farve end 

 Resten af Svampen, og som dannes af tætstaaende korte og 

 tynde trac Naale (se Tab. I. Fig. 1). 



Naalene ere for Størstedelen trac. ikke 1r°ac som 

 hos de øvrige Exemplarer af Rinalda ; men der tindes dog 

 Overgangsformer til lr"ac. som det kan sees af Tab. I, 

 Fig. 1. ligesom der hos Rinalda tindes trac Naale og 

 lignende Overgangsformer, som det kan sees af Tab. II. Fig. 8. 



Findested. 



Station 286. 



Thecophora semisuberites. 0. Schmidt. 



Thecophora elongata, Marenz. 



ibla. AV. Thomson. 



Af denne Form er der ogsaa fanget en stor Mængde, 

 og der tindes alle Overgange mellem den al Marenzeller 

 som Th. elongata opførte Form og den sædvanlige Tli. 

 semisuberites. I de mindste Exemplarer, der ere konisk 

 tilspidsede. rindes kun en Antydning til en Pudedannelse, 

 idet der oppe i Spidsen tindes en Del smaa Naale. der dog 

 ikke danne noget sammenhængende Lag, men ligge spredt 

 inde mellem de spidse Ender af de lange Naale. I lidt 

 større Exemplarer findes allerede et tydeligt Lag af smaa 

 Naale for Enden af Svampen. 



W. Thomsons Tit. ibla skiller sig fra Th. semisuberites 



kun derved, at de smaa Naale. der danne Puden. staar 



with the American specimen, whilst, the others are much 

 larger. To identify Radiella sol with Bowerbank's Halic- 

 nemia as Maranzeller has done, is however, not possible, if 

 I may judge from a preparation of the spicules of Halic* 



nemia patera which I have obtained from the Re 

 Norman. 



Habitat. 



Stations No. 29. 260. 323. 



A. M. 



Rinalda uberrima, 0. Schmidt. 



Of this form, there has been obtained a large number 

 of specimens, of very various size, as may be seen from 

 PI. VI. Fig. 19. To this form I. also, assign a sponge 

 which is illustrated PI. VI. fig. 10. although it does not 

 possess such large papillæ as the other specimens, but 

 its structure, otherwise, is the same as in Rinalda. in so 

 far, that it lias a thin 1 — 2 mm thick crust of lighter colour 

 than the rest of the sponge, formed of closely-set. short, 

 thin spicules of the trac formula (vide PL I. fig. ]). 



Most of the spicules are trac, and not tr°ac as in 

 the rest of the specimens of Rinalda; but there are, also, 

 found transition-forms towards the tr°ac formula, as may 

 bo seen in PI. I, fig. 1; whilst, also, in Rinalda, there are 

 found trac spicules and similar transition-forms, as may lie 

 seen in Pl. II. fis. 8. 



Habitat. 



Station No. 286. 



Thecophora semisuberites, O. Schmidt. 



Thecophora elongata, Marenz. 

 ibla, W. Thomson. 



Of this form, a large number lias also been obtained, 

 and there are found, all transition-forms between the 

 form Th. elongata, established by Marenzeller, and the usual 

 form of Th. semisuberites. In the smallest specimens, which 

 also, arc conically acuminated, there is found, only an indi- 

 cation of a terminal cortical layer, in as much as. that up at 

 the point, there is found a number of small spicules, which 

 do not, however, form a continuous layer, but are found 

 situated, dispersed between the acuate extremities of the 

 long spicules. In the larger specimens, there is already found, 

 a distinct layer of small spicules at the extremity of the 

 sponge. 



W. Thomson^ Th. ibla differs from Th. semisuberites. 

 only, in this. viz. that the small spicules which form the 



