lANTIlELLA, 23 



lanthella flabelliformis, Gray. 



Alcyonium irregulare &c., Albert Sebte, Locuplefcissiiui rerura naturaliiim 



thesauri accurata descriptio et iconibus artificiosissimis expressio, 173-4- 



1760, vol. iii. p. 183, nos. 2-4, partiin (1734-1760). 

 Flabellum aniense &c., Georg. Everard llumphius, Amboynsche Kariteyt- 



kamei", vol. vi. (1741). 

 lantJiella JlabeUiformis, W . I'leming, " Ueber lanthella, Gray," Wiii-zburger 



Verhandlungen, Neue Folge, Band ii. (1871). 

 lanthella flaheUiformis, J. E. Gray, " Note on lanthella^ a new Genua of 



Keratose Sponges," Proceedings of the Zoological Society London, 1869, 



p. 50 (1869). 

 lanthella Jtabelliformis, N. de Pole'jaeff, E-eport on the Scientific Results of the 



Voyage of H.M.S. ' Challenger,' Zoology, 1884, vol. xi. part 24, p. 37. 

 lanthella JlabelUformis, F. E. Schulze, " Untersuchungen iiber den 13au uud 



die Entwicklung der Spongieu. — IV. Mittheilung. Die Eamilie der Aplysi- 



nidae," Zeitschrift fiir vvissenschaftliche Zoologie, Band xxx. Seite 385 



(1878). 

 Kcratojihyton majus &c., Hermann Boei'haave, Index alter plantarum horti 



Lugduno-Batavi, Leyden, p. 6, panim (1720). 

 Spongia JiahelUformls, E. J. C. Esper, Die Pflanzeuthiere, vol. ii. p. 213 (1791- 



1830). 

 Spongia JlabelUformis, J. de Lamarck, Histoire Naturelle des Animaux sans 



Vertcbres, Deuxicme Edition par de Blainville, vol. ii. p. 550, partim 



(1832). 

 Sjjongia JlabelUformis, C. von Liune, Hortus Cliffortianus, p. 480, partim (1737). 

 Sjpongia JlabelUforiiiis, C. von Linne, Sy sterna Naturae, 12 Editio, p. 1290, pai'tim 



(1767). 

 Spongia JlabelUformis, P. S. Pallas, Elenchus Zoophytorum, p. 380 (1706). 

 Spongia JlubcUiformis &c., Royen, Prodromus, p. 522, no. 6, partim. 

 Verongia JlabelUformis, E. Ehlers, Die Esper'schen Spongien, p. 11 (1870) 



This sponge is more or less fan-shaped. It consists of a large lamella, 

 which is expanded in a plane or folded longitudinally. This lamella is 

 attached by a short peduncle ; it may be simple or (and this is particularly 

 the case in large specimens) several fronds may grow out from one and tbe 

 same stem. Sometimes the lamella appears branched, inasmuch as secondary 

 lamellae grow out from the first. The sponge attains a height of 500-lOUO 

 millim. and a similar width. The lamelke of large specimens are on an average 

 10 millim. thick, whilst those of small specimens rarely exceed 5 millim. in 

 thickness. The whole of the sux'face is covered with conuli, which are on an 

 average 4 millim. apai't and 1 millim. thick at the rounded distal end. The 

 height of the conuli varies greatly from 1-7 millim. The conuli are connected 



