Introduction to Animal Morphology. 221 



double, with acicula, and no hair-like bristles ; they may be all 

 similar . or some of the dorsal cirri feather-like (Den- 



dronereis, &:c.) 11. Nephthyidoe body long, many-jointed; 

 lateral feelers Miiail : peristome with no cirri, but with para- 

 podia and papilla; in place of teeth. Nephthys, the " hairy 

 bait" of fishermen, has one anal cirrus. 12. Glyccridx 

 many ring -nts : proboscis club-shaped, protrusible ; 



bristles with acicula ; gills short, or none ; chylaqueous 

 fluid colored in some by red corpuscles ; vascular system 

 none. The proboscis may have four hooked teeth with no 

 points (Glycera), or rows of pointed teeth (Glycinde). 

 13. Phyllodocidx long, many jointed; head lobes small; 

 S 4-5 : <yes 2-4 ; cpipharynx with papillae ; ventral cirri 

 leaf-like ; larva? monotrochal ; the cirri leaf-like, covering 

 the back (Phyllodoce), or leaving it mostly uncovered 

 (Eulalia). These genera have four pair of prostomial cirri. 

 Eteone has two, and the leaf-like cirri do not at all cover the 

 back. Alciope has two large, Lopadorhynchus two small, 

 14. Hi-sionida? few-jointed, with broad head-lobes 

 and long peristornial tentacles ; protrusible unarmed epi- 

 pharynx, with no gills ; oars one- (Hesione, Oxydromus) or 

 Ophidromus), or with an upper tubercular 

 branch and two delk. ; (Castalia). 15. Syllidae 



elong .-I with tentacles, often with eyes ; peristome 



with 2-4 cirri, often united to the prostomium ; pharynx not 

 protrusible, sometimes toothed, or with a chitinous tube which 

 a boring spine ; oars one-branched, with two aciculate 

 ntral cirri short, or none ; blood colorless, 

 but with colored corpuscles in Dujardinia; circulatory 01 

 r rudimental ; the sexes are dimorphic ; r 

 [ten by budding; there may be a mrtagrnrtic con- 

 .!)pmrnt of an rgg multiplying by 

 !f remain -; (Autolvtus). Oophylax 



until they develop. 

 Sehmardia and < . 



ridae 



-mall : pmstoniiimi with 



.ind two litl *!i t\\o ! 



or LriMl 



