486 ANNELIDA. 



Sub-fam. 2. Polycirrinae. "Without branchiae. The prestomium forms 

 a large upper lip, and gives origin to many long tentacles. Polycirrus Gr. 

 (including Leucariste Mlmg. ; Ereutho Mling.); P. aurantiacus, bright 

 red, with orange tentacles. 



Malmgren distinguishes 3 other sub-families, Artamaceae, TrichobrancMdae, 

 Canephoridae (Terebellides, Sars.). 



Fam. 3. Ampharetidae. Body formed of two regions, of which the anterior 

 is broad and bears simple setae and hooks, while the posterior part is narrow 

 and has only hooks. Numerous filiform tentacles spring from the prestomium. 

 The peristomium forms a kind of lower lip. Four filiform branchiae are placed 

 on each side of the anterior segment!, and in front of them are some strong 

 setae. Inhabit tubes in mud. Ampharete Mlmg. ; Amphicteis Gr. (Lysippe, 

 Sosane Mlmg. ) ; Sabellides Gr. ; Melinna Mlmg. ; Melinnopsis, Mclnt. ; Phyllo- 

 comus Gr. ; Grubianella Mclnt. ; Samythopsis Mclnt. ; Eusamytha Mclnt. 



Fam. 4. Amphictenidae. Distinguished from Terebellidae mainly by the 

 presence of tentacles disposed in two bundles on the buccal ring, of two pairs 

 of tentacular cirri and of pectinated branchiae on the second and third 

 segments. The anterior end bears two rows of golden setae, which act as an 

 operculum to the tube. The tubes are straight or slightly curved, and composed 

 of small grains of sand. Pectinaria Lam. ; Amphictene Sav. ; Petta Mlmg. 



Sub-order 4. CAPITELLIFORMIA. 



Blood-red worms, with a conical prestomium. Without prestomial 

 processes, but with a pair of large retractile ciliated organs. The 

 segment next the prestomium is without setae or cirri. The parapodia 

 do not project ; the setae are unjointed, and are hair-like in the 

 anterior segments, and hooked posteriorly. This external division 

 of the body does not correspond with internal differences. There are 

 no cirri, though special, sometimes retractile, gills are frequently 

 present. The buccal region is eversible ; there is no armed pharynx. 

 A pair of prominences with sensory hairs, placed one on each side, 

 in most segments. The nephridia are small, and sometimes more 

 than one pair in a segment ; special genital funnels exist in more or 

 fewer of the anterior segments of the hind body. There are no 

 blood-vessels; the coelomic corpuscles are red. The larvae are 

 telotrochous, and are ciliated on the ventral surface. They are 

 burrowers. 



Fam. Capitellidae,* with characters of sub-order. Capitella Blainv. ; C. 

 capitata v. Ben., North Sea, etc. ; Notomastus Sars ; Dasybranchus Grube ; 

 Mastobranchus Eisig ; Capitomastus Eisig. 



* H. Eisig, "Die Capitelliden," Fauna and Flora d. G. v. Neapel, xvi., 1887. 



