ACTINIARIA 



123 



branched pennons. If this specimen is the type, not those from Bergen, I am ahuost inchned to regard arctica 

 and Sars's duodecimcirrata as one and the same species (a closer examination of some other specimens from 

 Lofoten is, however, to be undertaken before deciding it with certainty) If this should be found to be the 

 case, the Halcampa-sj)ecies from South Norway, from Sweden and from the Baltic Sea may be named H. 

 variabilis. Sars has besides, at another time, evidently confounded an Edwardsia proper with a H. duode- 

 cimcirrata. In the museum of Christiania there are several now exsiccated specimens, labelled 0gsfiord, 

 Finmark Sars, and determined probably by himself as Edwardsia duodecimcirrata; in reahty these spec- 

 imens are Edwardsia proper, probably E. andresi, hke H. duodecimcirrata mostly provided with 12 tentacles. 



Halcampa ? vegae n. sp. 



PI. I. Fig. 2. 



Diagnosis: Apertures of the retractile physa? Scapus with a thin, easily deciduous periderm. Nema- 

 tocysts of the scapus, capitulum and tentacles about 13 X 1,5 //. Spirocysts of the capitulum and the ten- 

 tacles unto about 11 /z long. Tentacles probably 12. Perfect mesenteries 12, imperfect 12. lyongitudinal pen- 

 nons of the mesenteries very strong, their ramification almost like that of the pennons of H. arctica. Parietal 

 muscles strong, in transverse-sections not elongated, divided into very fine and numerous branches. Imper- 

 fect mesenteries very finely folded, elongated. 



Occurrence: Behring Sea 64°52' N. i72°3' W. 18 fms (Vega-Exp. N. 1056) i sp. 



Exterior aspect: The exterior of the very contracted and partly not well preserved animal (PI. i, 

 fig. 2) recalls that of other Halcampa-sptcies. On account of the strong contraction and involution of the 

 physa I have not been able to examine it more closely. The scapus is provided with 

 a thin, easily deciduous periderm. Round the papillae foreign bodies are fastened. 

 The tentacles were not well preserv^ed, liut are probably 12 in numbers. 



Anatomical description: The anatomy of this species much recalls that 

 of H.artica. I have indeed not been able to find the sphincter, because of the very 

 bad preservation of the uppermost part of the capitulum and of the tentacles. I do. 



Fig- 147 



Textfigs. 146 — 148. Halcampa? vegae. 

 Transverse section through parts of perfect mesenteries in the repro- 

 ductive region. — Fig. 146: through the pennon. — Fig. 147: through 

 the parietal muscle. — Fig, 148: Transverse section of a mesentery 

 46 of the second order. Fig 



