NO. 4 HARTMAN : POLYCHAETOUS ANNELIDS 419 



character may have only specific significance or even be at least partly 

 dependent on the age of the individual. 



Key to Species 



1. Abdominal neuropodia enlarged, branchial; the first setigerous 

 segment complete with notopodia and neuropodia. . 

 N. (C.) lineatus 



1. Abdominal neuropodia not so enlarged; first setigerous segment 

 vrith notopodia but not neuropodia 2 



2. Prostomium with eyes 3 



2. Prostomium without eyes (pi. 49, fig. 2) . .N. (C.) luridus 



3. Prostomial eyes consist of oval patches of 15 to 20 each (pi. 47, 

 fig. 4) posterior notopodia somewhat prolonged (pi. 47, fig. 5) 

 N. (C.) tenuis 



3. Prostomial eyes consist of a single pair of small spots (pi. 48, fig. 

 3) ; posterior notopodia not so prolonged (pi. 48, fig, 2) . 

 N. (C.) hemipodus 



Notomastus (Glistomastus) lineatus (Claparede) 

 Plate 46, Figs. 1, 2 

 Notomastus lineatus Fauvel, 1927, pp. 145-146, fig. 51; Berkeley, 1932, 

 pp. 674-675. 



Collection. — 1457-42 (2 anterior ends). 



Two small, short anterior fragments are referred to this species. 

 They consist of the thorax and 5 abdominal segments and measure only 

 14 mm long. The thorax is much inflated at the fourth to sixth setigerous 

 segments. Its surface is strongly areolated through the first 6 segments. 

 Notopodial and neuropodial setal fascicles are well developed through the 

 second to twelfth thoracic segments. Nephridial pores are visible 

 between the eighth/ninth, ninth/tenth, and tenth /eleventh thoracic 

 setigerous segments ; they number only 3 pairs. 



In the abdomen the thoracic uncinigerous tori are short and approach 

 each other mid-dorsally. The superior edge of the neuropodium is in- 

 flated and branchial. Neuropodial tori are long and largely ventral in 

 position ; the two of a segment approach each other midventrally. Lateral 

 organs are visible on all segments ; they are in the usual position between 

 notopodia and neuropodia. The prostomium is conical and has a short 

 palpode. There are 2 elongate patches or pigmented eyespots at the 

 dorsolateral posterior margin and in front of the nuchal slits. 



