19 Median antenna much longer than laterals E. dispar 



19' Median and lateral antennae all equally short E. verugera 



20 Dorsal cirri on all setigers including second. No internal 



capsules above parapodia [S.fortintu) No N.C. record 



20' No dorsal cirrus on setiger 2. No internal capsules above 



parapodia S. pirifera 



21 Dorsum with six rows of large globular papillae across each 



segment; antennae also globular (Enrysj/Ilis) E. tiiberculata 



21' Dorsum without rows of globular papillae; [embryos carried 



on backs of females (Brania)] 22 



22 Dorsal cirri abruptly ti-uncate and containing fibrillar struc- 



tures. Setae with unidentate blades B. pusilla 



22' Dorsal cirri normally tapered and lacking fibrillar structures. 



Setae with bidentate blades B. ciavata 



23 Superior simple setae with shafts as stout as those of com- 



pound setae. Segments without ciliated bands. Reproduc- 

 tion by anterior scissiparity (Proceraea) 24 



23' Superior simple setae with shafts more slender than those of 

 compound setae. Segments with ciliated bands. Reproduc- 

 tion by posterior scissiparity, gemmiparity or epigamy (Aiito- 

 hjtu><) 25 



24 Body colorless or with a pair of faint dorsolateral bands when 



fresh. Nuchal epaulettes rudimentary. [Trepan with 18 



teeth] P. coniuta 



24' Body with reddish bars on alternate segments when fresh. 



Nuchal epaulettes reach setiger 1 P.fasciata 



25 Nuchal epaulettes reach setiger 3-4. [Trepan with 30 teeth 



including large laterals and small teeth in the dorsal and 

 ventral arcs. Body colorless or segments faintly banded 



when fresh] A. dottalius 



25' Nuchal epaulettes not reaching setiger 3 26 



26 A chain of 2-8 sexual buds when mature. No color pattern. 



Trepan with 24-36 subequal teeth A. prolifer 



26' Sexual buds formed singly. Anterior segments with four red 



-spots when fresh. Trepan with 30-40 subequal teeth A. mbropiDictatus 



TrypanosyHis zebra ((Jrube, 1860) stomium broader than long, with large palps 



well separated basally and two pairs of eyes. 

 TrypuiiosylliH zebra. - Fauvel, 1923: 269, Fig. Two pairs of tentacular cirri. Antennae and 



101 a-e. - Day, 1967: 256, Fig. 12.6. a, b. dorsal cirri stout, with numerous (over 30) well- 

 marked joints. Margin of pharynx (trepan) with 

 DeNCriptiou. — Body markedly flattened, up to 10 equal teeth and a small dorsal tooth as well. 



60 mm long, with two narrow purple lines across Setae all compound with bidentate blades, the 



anterior segments and purple dorsal cirri. Pro- two teeth being subequal and close together 



28 



