482 



ANNELIDA. 



1875, p. 496, and A. Collin, " Bemerk. iib. d. essbaren Palolowurm," in 

 Appendix to Kramer's work on the Coral-reefs of Samoa, Kiel and Leipzig, 1897, 

 Lipsius and Fischer). 



Fam. 15. Glyceridae. Body elongated, with numerous segments. Pre- 

 stomium is long, conical, annulated, and carries at its apex four small tentacles, 

 at its base two palps. The pharynx can be protruded to a great length, and is 

 provided with four, or several, strong teeth. Parapodia of first two segments 



FIG. 392. Parapoclium of Nereis (after Quatre- 

 fages). DP notopodium ; VP neuropodium, 

 witty bundles of setae ; Ac aciculum ; Re dorsal 

 cirrus ; Be ventral cirrus. 



FIG. 393. Pharyngeal apparatus of 

 Eunice in a retracted condition. 

 g brain; vd oesophagus; pli 

 pharynx ; pht pharyngeal pocket ; 

 k jaws ; mh buccal cavity ; m 

 mouth ; r dorsal, 6 ventral surface. 

 (After Lang.) 



incomplete, without tentacular cirri, uni- or biramous. Two anal cirri. Special 

 retractile gills are present. The corpuscles of the coelomic fluid are coloured 

 red with haemoglobin, and there are said to be no blood-vessels. Glyccra Sav., 

 parapodia all alike ; G. gigantca Qfg., and G. capitata Oerst. , under stones and 

 in sand, English Channel ; Hemipodus Qfg. ; Goniada And. and Edw., anterior 

 and posterior parapodia not alike. 



FIG. 394. Glycera Meckclii Aud. and Edw. (Regue Animal), with everted pharynx. 



Fam. 16. Ariciidae. Numerous segments. Prestomium without tentacles, 

 or with small tentacles, or with tentacular cirri. Peristomium with setigerous 

 tubercles. Pharynx short, unarmed, slightly or non-retractile. Parapodia 

 short, biramous. In all but the first few segments the parapodia are somewhat 

 dorsally placed. Burrow in sand. Aricia Sav. ; Thcodisca F. Miill. ; Scoloplos 

 Blainv. : Sc. armiger Mill!., is common on our coast, length one inch, red gills ; 

 Aricidea Webs. 



Fam. 17. Typhloscolecidae.* Pelagic forms of uncertain affinities. Typhlo- 

 scolex Busch ; Sagitdla Wag. ; Travisiopsis Lev. 



* Reibisch, Phyllodociden u. TypJiloscokcidcn d. Plankton Expedition, 1895. 



