CAMPANULINA ACUMINATA. 187 



1. C. ACUMINATA, Alder. 



CAMPANTJLINA TEXUIS, Van Bencden, Un mot sin- le mode cle Reproduct. dcs 

 An. infer., Bullet, de 1'Acad. Roy. de Belgique, xiv. no. 5, 

 fig. 6; Faune Litt. de Belg. Polypes, 174, pi. xiii. 



LAOMEDEA ACUJIIXATA, Alder, North. & Durh. Cat. in Trans. Tynes. F. C. iii. 

 124, pi. v. figs. 5-8 ; T. Sfrefhill Wright, Edin. N. Phil. 

 Journ. for Jan. 1858, 108, pis. i. and ii. 



WIUGHTIA ACUMINATA, Affassi^, N. II. U. S. iv. 354. 



Plate XXXVII. 



STEM slender, more or less branched, annulated, the annu- 

 lations strongest at the base and becoming fainter or 

 disappearing towards the calycle ; branches given off a 

 little below the calycles, and copies of the primary shoot ; 

 HYDROTHECJE thin, membranous, finely striated longitu- 

 dinally, elongate pod-shaped, squared below and tapering 

 to a fine point above; GONOTHEC.E very large, cylin- 

 drical, smooth, supported on long peduncles, developed 

 on the steins, generally near the base, or on the stolon ; 

 POLYPITES very extensile, with about 20 muricated ten- 

 tacles, united for about ^ of their length by a mem- 

 branous web. 



GONOZOOIDS pale-emerald green*; UMBRELLA subhemi- 

 sphericai, becoming mitrate during contraction, covered 

 with large thread-cells, more especially about the middle 

 and upper parts ; MANUBRIUM quadrangular ; TENTA- 

 CULAR BULBS ringed with deep-blue, destitute of ocelli. 



VAN BENEDEN was the first to examine and figure this 

 interesting form, so long ago as 1847. He named it Cam- 

 panulina tenuis, constituting a new genus for its reception, 

 and taking the web which unites the basal portion of the 

 tentacles as the principal distinctive character. He gives, 

 however, no detailed description, and his figure does not 

 enable us to recognize the species which he had in view. 

 Mr. Alder has determined its identity with his OAvn Lao- 

 medea acuminata from an examination of specimens trans- 



* "Aussi belles de couleur quelcs plus belles emeraudi's." - Vu 



