18 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.15 



25-125 fms, collected by T. Burch (1) ; off La Jolla, California in 45 

 fms (1) ; dredged off southern California, reported as G. annulata, see 

 synonymy above (3). 



This is large, robust and dark (preserved), maculate over para- 

 podial lobes, cirri and at the sides of the body. Larger, presumably 

 older individuals are usually darker than smaller ones. The largest are 

 over 7 inches long (preserved) but most are only half as long or less, 

 with one (station 1387-41) only about 15 mm long. The parapodial 

 change is abrupt and occurs at segment 44 or 45. 



The prostomium is broader than that in most species of the genus; 

 it is depressed, truncate, clearly annulate with 8 to 10 rings. It ter- 

 minates in front in a broad, slightly spatulate end with 2 pairs of bi- 

 articulate antennae inserted at the anterolateral margins. A pair of 

 basal, deeply embedded eyes can usually be distinguished, or also distal 

 eyes (textfig. 1) or eyes are absent (pi. 1, fig. 1) in some individuals. 



The fully everted proboscis is comparatively short but cylindrical 

 (textfig. 1) ; it is only about as long as the first 23 segments (preserved). 

 Under low magnification it appears smooth on its proximal surface 

 but when enlarged it is seen to be closely covered with tiny, low pro- 

 boscidial organs that are appressed to the surface; they resemble low, 

 flat scales (pi. 1, fig. 4). The terminal papillae are low, small, widely 

 spaced and number 17 or 18; the ventralmost are the largest. The 

 chevrons are variable in number; they may consist of as many as 18 or 

 more on a side but are usually fewer and rarely vestigial. A larger 

 individual from station 1130-40 has 17 on a side, but a smaller one 

 from station 1132-40 has only 7 on a side. The smallest individual, 

 15 mm long, from station 1387-41 lacks chevrons on the left side and 

 has only 2 pieces on the right one. The other parts of the body, how- 

 ever, are in agreement with larger specimens. 



Macrognaths are dark and have 3, 4 or 5 teeth, the largest at the 

 superior end. In cases where there are only 3 teeth, one can usually 

 distinguish 2 or 3 minute ones at the ventral end. Micrognaths vary 

 in number, depending probably on size or age of the individual. In 

 smaller specimens the ventral arc may have only 3 larger pieces, but 

 this number varies through 5, 7 (pi. 4, fig. 1), 9 or even 12 pieces in 

 the largest individuals. The dorsal arc in smaller individuals may con- 

 sist of 4 widely spaced, inconspicuous, Y-shaped pieces, but larger 

 specimens may lack them altogether or the pieces may be embedded so 

 as to escape notice unless they are dissected out. One specimen from 

 station 1134-40 has 9 pieces in the ventral arc and 4 minute ones in 



