228 PKOfr. W. A. HASWELL '. 



The ventral pedal glands (PI. il7. fig. 30) are usually conspicuous in 

 S. Injstrix. In the female their secretion has, as in Exogone, the function of 

 effecting the attachment of the eggs to the ventral surface. 



In Grubea kerguelensis and G. quadrioculata the integumentary glands are 

 diffused and inconspicuous. 



" Capsules a batonnets " or rhabdite glands are not universal in the 

 Exogonece. Among the species dealt with in this paper they occur in 

 SpJuerosyllis hystrix, Grubea pusilloides, and G. kerguelensis. In Splicerosyllis 

 hjstrix each is an oval sac situated on the dorsal and posterior side of 

 the corresponding bundle of setae and opening on the surface on the 

 dorsal side of the parapodium : the slender rhabdites are often to be seen 

 protruding through the external aperture. In Grubea pusilloides, as already 

 described, there are two of these bodies in each of the remarkably modified 

 dorsal cirri (PI. 17. fig. 27). In G. kerguelensis they have almost exactly the 

 same position as in Splicerosyllis hystrix and are found in all the segments 

 from about the eighth backwards. 



There is little doubt that where they occur these rhabdite glands represent 

 a modification of the dorsal pedal glands of other members of the group. 



In the absence of direct observation it may be conjectured that the main 

 functions of the system of integumentary glands are protective : the viscid 

 matter which they secrete becoming strengthened by the inclusion of foreign 

 gritty particles may form a temporary investment as in Exogone, or may 

 become closely adherent to the integument as in SpJuerosyllis. With such a 

 protective function is doubtless associated the entangling of animals seized 

 upon as prey, permitting of their being effectively attacked by means of the 

 proboscis. 



The pedal glands, dorsal or ventral, as the case may be, assume in the 

 female the special function of secreting the viscid matter by the agency of 

 which the ova are caused to adhere firmly to the surface : since the same 

 glands are equally developed in the male, it seems probable that in the latter 

 sex they also have a special function — perhaps connected with fertilization. 



The rhabdite glands, which in part replace pedal glands in some cases, 

 doubtless have a specialised function in connection with the capture of prey 

 and the warding off of enemies. 



Alimentary Canal. 



The pharynx in Exogone fustifera has the usual single tooth and the circlet 

 of conical papillae, which are eight or ten in number. In the living speci- 

 mens in some cases droplets of clear liquid are to be detected exuding from 

 apertures at the ends of the papillae, and in connection with these are 

 traceable fine ducts which are the ducts of the glands of the papillae (pharyn- 

 geal glands). These (PI. 17. fig. 1, p.ff.) are about ten in number, in the 



