TWO NEW SPECIES OF ONYCHOPHOEA. 49^ 



arranged spots mentioned in describing the external cha- 

 racters. Even in the adult they are not as degenerate as 

 usually represented in other genera. In section they are 

 seen to consist of a group of long cells with oval nuclei 

 situated near their internal end. In a median section the 

 cells seem to be arranged fan-wise round what appears to be 

 a cavity which apparently communicates with the exterior. 

 If this is not the case, the cuticle covering the skin clearly 

 dips dowa into the space situated inside the group of cells 

 constituting the ventral organ. 



(c) The Salivary Grlands :— The salivary glands present 

 the same general arrangement as in the other genera of the 

 Peripatida;. 



Their coclouiic end-sacs are of enormous size, and spread 

 themselves, chiefly in a dorso-ventral direction, under the 

 lateral longitudinal muscles. Their Wiills are thick, and 

 consist of cells which present no definite cell outlines, and 

 which are supplied with large nuclei and highly vacuolated 

 cytoplasui. 



From the postero-dorsal corner of the coelomic end-sacs 

 a short duct passes and opens into the tubular part of the 

 slime-gland on its dorsal aspect, on a level with the first pair 

 of legs. The tubular pnrts of the glands lie in the lateral 

 body-cavity immediately above the nerve-cords. Towards 

 their posterior end they are circular in transverse section, 

 but anteriorly they are triangular, the apex of the triangle 

 being wedged in the upper angle of the lateral body-cavity. As 

 a rule their lining cells are tall and columnar, but in places 

 they are short, especially on the loAver side of the triangular 

 section and towards the anterior end of the glands. They 

 open into the anterior outer corner of two rather large sacs 

 which are situated, one under each of the nerve-cords. 

 These sacs have not been seen in any other genus. They 

 certainly do not exist in P. capensis, or else Balfour and 

 Sedgwick would have seen them in sections, for in Eoperi- 

 patus they are the most prominent feature of a section 

 passing through that region. From the inner anterior corner 



