70 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



Distribution. — G. robusta is Known from Washington, south to 

 southern California, shore to 52 fms, in gravelly sand. An incomplete 

 individual from Lemon Bay, Florida, is questionably referred to this 

 species. 



Glycera dibranchiata Ehlers 

 Plate 10, figs. 9, 10 



Hartman, 1940, p. 246 (synonymy); Rioja, 1941, pp. 708-709, pi. 

 1, fig. 7; Fauvel, 1943, pp. 16-17; Hartman, 1944b, p. 18; 

 Hartman, 1945, p. 23. 



Collections. — 1030-40 (fragment) ; El Mogote near La Paz and 

 San Lucas Cove, Lower California, shore, collected by E. F. Ricketts 

 (2); Newport, Rhode Island, shore (3); Woods Hole and Vineyard 

 Sound, Massachusetts, shore (2); Beaufort, North Carolina (16); 

 Moss Beach, San Mateo County, California, shore ( 1 ) . 



This is chiefly characterized in its enlarged branchial lobes at dorsal 

 and ventral ends of parapodia. The proboscidial organs most nearly 

 resemble those of G. robusta (see above) but the transverse ridges 

 number only 5 or 6, instead of 7 to 9. Those of a pair meet medially 

 and there is no distinct midrib (fig. 10). As in G. robusta Ehlers, 

 the pore is subapical and on the side directed toward the mouth. The 

 distal end is slightly curved (fig. 9). 



Distribution. — G. dibranchiata Ehlers is reported from eastern shores 

 of the United States from Massachusetts to North Carolina, also the 

 West Indies and Caribbean Sea (Hartman, 1944b, p. 18). On the 

 Pacific side its range extends from Mazatlan, Mexico (Rioja, 1941) 

 northward at least to San Mateo County, California. It is intertidal to 

 depths of 31 fms. 



Glycera oxycephala Ehlers 

 Plate 10, figs. 3, 4, textfig. 3 



Ehlers, 1887, p. 121 ; Hartman, 1940, pp. 248-249. 

 ?G. verdescens Chamberlin, 1919b, p. 14. 



Collections.— 1205-40 (6); 1219-40 (1); 1232-41 (1); 1296-41 

 (2); 1330-41 (1); 1338-41 (1); 1340-41 (2); 1341-41 (1); 1342-41 

 (1); 1483-42 (3). 



The body is usually long, slender and rather rigid except for a 

 posterior coiled portion. Total length seldom attains 70 mm. A striking 

 feature is the greatly attenuated and prolonged prostomium with its 

 unequally long antennae. The bluntly rounded presetal lobes are also 



