HALICHONDKIA. 107 



ssepius bitariam et plana evadit. Substantia minus S. officinali 

 tenax." It is true most of the Linnean synonymes are erro- 

 neous, and of this number is the quotation of the Sp. folias- 

 CENS of Pallas, — a species undoubtedly distinct. Neither has 

 H. infundibuliformis any relation with the Spongia Pocil- 

 LUM of Muller, (which is a species of Grantia) though con- 

 founded with it by Lamouroux, — an error in which he has been 

 followed by the editors of the last edition of Lamarck. 



11. H. VE'sriL.ABRXJM, fan or Ju7i7iel-shaped, ivith reti- 

 culated woody fibres, covered loith a villous coat of hair-like 

 spines, and large spongy pores. 



Plate VII. 



Sea-fan Sponge, Ellis in Phil. Trans, abridg. xii. 261, pi. 7, Fig. 

 H. 



Spongia ventilabrum, Lin. Syst. 1296. Mull. Zool. Dan. prod. 

 255. Ellis and Soland. Zooph. 188. Turt. Gmel. iv. 656. Ja- 

 meson in Wern. Mem. i. 561. Montagu in Ibid. ii. 105. Stew- 

 Elem. ii. 433- Bosc, Vers, iii. 167. Stark, Elem. ii. 424. 

 Grant in Edin. New Phil. Journ. i, 349 ; and ii. 122, pi. 2, fig. 5. 

 copied in Blainv. Atlas, pi. 94, fig. 5. 



Spongia zetlandica, Jameson in Wern. Mem. i. 561. 



Sp. ventilabriformis. Gray, Brit. PI. i. 359. 



Halichondria ventilabra, Flem. Brit. An. 523. Thompson in Ann. 

 Nat. Hist. V. 254. Bellamy's South Devon, 268. 



Halispongia ventilabra, Blainv. Actin. 533. 



Spongia xerampelina, Grant m Edin. Phil. Journ. xiv. 116. 



Var. ». ScYPUA, " rigid hut not woody, originating from a corhy base, 

 and spreading into a cup ; slightly cut and indented at the margin : 

 ■pores fine." 



Spongia Scypha, Montagu in Wern. Mem. ii. 107. pi. 15, fig. i. 



Sp. foliascens. Gray, Brit. PI. i- 359. 



Hnb. In the islands of Unst and Fulah, Jameson. In deep 

 water on the Scottish coast ; in Zetland termed Liuff-Hoods, 



