GLANDS 



chilidium, in most Palleiiidae, in nearly all Nymphonidae. Their 

 presence or absence is often iised as a generic character, helping 

 to separate, e.g., Pallene from Pseudopcdlene and Pallenopsis, 

 and Phoxichilidium from Anoplodactylus : nevertheless they may 

 often be detected in a rudimentary state when apparently absent. 

 The legs are smooth or hirsute as the body may happen 

 to be. 



FIG. yib.Boreanymphon robustum, Bell. Male with young, slightly enlarged. 

 Faeroe Channel. 



Glands. In some or all of the appendages of the Pycnogonida 

 may be found special glands with varying and sometimes obscure 

 functions. The glands of the chelophores (Fig. 280, p. 522) are 

 present in the larval stages only. They consist of a number of 

 Husk-shaped cells * lying within the basal joint of the appendage, 

 and generally opening at the extremity of a long, conspicuous, 

 often mobile, spine (e.g. Ammothea (Dohrn), Pallene, Tawjstylum 

 (Morgan), Nymplion Irevicollum and N. gracile (Hoek)). They 

 secrete a sticky thread, by means of which the larvae attach 



1 Meisenheimer (Zcitsch. iciss. Zool. Ixxii., 1902, p. 235) compares these with 

 certain glands described in Branchipus by Spangenberg and by Glaus. 



