the above-quoted paper from a solitary female specimen found in the branchial 

 cavity of a Phallnsia obtained off the coast of Spitsbergen. It was regarded 

 by that author as the type of a particular family, for which he proposed the 

 name Shizoproctidce, not being aware of the close relationship of this form 

 to the genus Botryllophilus of Hesse. 



Occurrence. Some few specimens of this form were obtained, many years 

 ago, from the branchial cavity of Phallusia obliqna taken at Vadso, eastern 

 Finmark, from a depth of about 60 fathoms. Aurivillius also records a single 

 female specimen from the Finmark coast. 



Distribution. Spitsbergen (Aurivillius). 



Fam. 6, Enterocolidae. 



General Characters. Body of female more or less vermiform in shape and 

 nearly motionless, with thin and soft integuments and the segments only 

 faintly indicated; that of male (according to Canu) cyclopoid in shape and 

 provided with well developed locornotory appendages. Tail, as a rule, poorly 

 developed, terminating in 2 small and simple blad-like caudal rami. Anterior 

 antennae very small. Posterior antennas biarticulate and not prehensile (in 

 female). Only 2 pairs of oral appendages present, the mandibles and the 

 anterior maxillipeds being wholly absent 1 ). The 4 anterior pairs of legs (in 

 female) very imperfectly developed, with the rami more or less rudimentary. 

 5th pair of legs, when present, forming 2 short lateral lappets issuing from 

 the end of the anterior division of the body. Two free ov ; sacs present in 

 female appended to the base of the tail and generally very long, cylindrical 

 in form. 



Remarks. The type of this family is the genus Enterocola of v. Beneden 

 which in many respects differs considerably from the other Notodelphyoida, 

 and in the general appearance of the body (in female) bears a strong resem- 

 blance to some of the Lernasoida (Condracanthidae). This is perhaps still more 

 the case with some of the other forms belonging to the present family. Yet, 

 some well marked points of agreement with the family Botryllophilidce are 



l ) True, in some of the forms (Enteropsis, Aplostoma) mandibles have been described; but in 

 my opinion the appendages so named are in reality not mandibles but more properly the maxillae. 



