144 AET. IT. — A. IZÜKA ! 



bordered bristles. Upper jaw-holder long ; all the 4 pairs of 

 jaws similar ; the first pair toothed in the middle and provided 

 with a terminal fang ; the second small and toothed ; the third 

 and fourth falcate. I^ower jaw shorter than the upper ; the 

 two halves thick, rounded on the anterior margin and tapering 

 to the posterior end. 



Larrnida rohiista Moore. 



1903. Laranda robusta, Moore. Proe. Acad. Nat. H(\ Pliilad., Vol. LV, 

 p. 454, PI. XXVI, figs. 64, 65. 



Since I have not been able to examine this species myself, 

 I will give the following extract from Mooee's description. His 

 incomplete type specimen, consisting of the prostomium and 

 anterior 202 segments, measured 6,5 mm. in breadth and 165 mm. 

 in length. 



Prostomium has a peculiar flattened form, curved and hol- 

 lowed below like the bowl of a spoon ; it has a distinct dorsal 

 longitudinal sulcus and is slightly dove-tailed into peristomium. 

 No eyes visible. 



Body nearly circular in section. 



Parapodia uniform in character throughout ; in the middle 

 of body, where they reach largest size, they about equal the 

 length of the segment, and are stout, obliquely truncate, not 

 tapering, with a single blunt, conical postsetal process which 

 arises from the ventre -lateral angle and is directed outward and 

 shghtly caudad. 



Bristles in anterior parapodia arranged in two groups. 

 All are pale brown, long, slender, simple, sharp-pointed and 

 wingless, with a gentle sigmoid curve. After about the 



