ORDER II. HYDRO IDE A. 089 



Hydroidea with persistent buds; polyps long-tubular, calicles pedi- 

 cellate ; in modes of reproduction near the Tubularidae. 



The structure of the Campanularise has been investigated with 

 great skill and minuteness by Van Beneden. He has ascertained 

 their close relation to the Tubularidse, and their identity with the 

 species of that family, in modes of reproduction, and is inclined to 

 associate the two groups in one. 



The family includes two genera, as follows : 



CAMPANULARIA. (Lamarck.) Polyps budding from an ascending 

 shoot or stolon, erect, or climbing. 



LAOMEDEA. (Lamouroux.) Polyps alternately arranged, and zoo- 

 phyte having its branches usually zigzag. 



LOMEDEA GRACILIS. (Pickering.} 



L. caulibus 6-8'" altis, et stolone filiformi surrectis, optime ziczac 

 flexuosis ; caulibus juxta axittas penduculisque annulatis ; caliculis 

 carnpanulatis ; vesiculis elongato-ovatis, infra suprhque attenuatis, et 

 apice tnmcatis collogue brevi terminatis. 



Sterns 6 to 8 lines high, and rising from a creeping stolon, regularly 

 zigzag in form ; the stem for a short distance above the axils, and 

 the pedicels, ringed ; calicles campanulate ; vesicles oblong-oval, 

 tapering above and below, and truncated at apex, with a short 

 neck. 



Plate 61, fig. 7, zoophyte, enlarged ; 7 a, natural size; 7 b, polyp, 

 partly expanded. 



Gulf-weed, Atlantic, lat. 34 39' N., long. 72 01' VJ.Exp. Exp. 



This species is near the geniculata; but the vesicle is not abruptly 

 enlarged immediately below the short neck which surrounds the 

 aperture. " The average length of the pedicels was about ^V of an 

 inch, and of the cells T'S of an inch ; the outer shell was diaphanous 

 and apparently entirely membranous; tentacles as many as twenty. 

 A distinct, rapid current of globules was perceived in the main axis of 

 one of the stems." C. Pickering. 



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