98 



JOHAN KIÆfi. 



[No. 9 



will be seen that the testical sacks occupy the lowest part o 

 the gland, separated from the ovary, wich forms the whole o 

 the upper arch by the cressent shaped oviduct in the sectior 

 The testicle sacks collect together in a vas defrens whic 

 runs under the oviduct. A garland of fine hair is found i 

 the sewer space, where that goes over into the sewe 

 siphon. 



Polycarpa libera, nov. sp. 

 (Fig. 26—30). 



Bod}' free, unattached. 



The exterior form of the body is somewhat different i 

 the various specimens that I have had for examination. 



In two specimens from Vadsø the length of the anim 

 is greater than the height (fig. 26), the hindmost end is rounde 

 and here fumished with fine fastening threads, by aid 

 which it is finely cover ed with sand. The testa is lig 

 greyish, parchment-like, the foremost very thin and smoot 

 the hindmost much thicker, and finely wrinkled. 



The length: 21 mm., height: 15 mm., and breadt 

 9 mm. 



Two specimens from Komagfjord and Øxfjord, are, 

 the contrary almost globular. The testa, over all its circu 

 ferance, is furnished with a close wool of fastening threai 

 to which a mass of sand is attached (fig. 27). Both openir 

 on the foremost part of the animal are closely situated. 

 the specimen from Vadsø there are rather long conical siphc i 

 (4 mm.) of which the mouth siphons are situated foremc, 

 and nearest the longitudinal axis of the animal. Li the otl S 

 two specimens, on the contrary, the openings are little visil , 

 they being drawn down into a fold of the testa. Probably t b i 

 as well as the globular form of these specimens, arises fr i 

 the animals being completely hemmed in, whereas the spe- 

 mens from Vadsø are conserved in an extended position. 



