254 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



Glycera americana Leidy 



G. rugosa Johnson, 1901, pp. 409-411, pi. 10, figs. 101, 102. 

 Hartman, 1940, p. 246. 



This is common in sandy mud flats of Tomales Bay. Length is 100 

 to 200 mm. 



Glycera tenuis, new species 

 Plate 21, Figs. 23, 24 



Hartman, in preparation, AHF. 



Several individuals come from Dillon Beach, in fairly clean sandy 

 beach. In size and general appearance this approaches Hemipodus bore- 

 alis (see above), but its parapodia are provided w^ith both simple and 

 composite setae (pi. 21, fig. 23). Parapodial lobes have the posterior lobe 

 entire and the presetal portion bilobed (pi. 21, fig. 23). The ventral 

 cirrus is triangular, resembles the upper part of the presetal lobe; the 

 dorsal cirrus is small, papillar. 



The proboscis (everted) is covered with soft papillae. The aileron of 

 the jaws is unique in being slender, tapering (pi. 21, fig. 24), suggesting 

 the specific name. 



This species is described more fully in another report (Hartman, in 

 preparation, AHF). 



Holotype. — AHF no. 62. 



Type locality. — Dillon Beach, California, in sandy beach; intertidal. 



Distribution. — Central California. 



Family Goniadidae 

 Key to Species 



1. Proboscis provided with a series of dark, V-shaped pieces (chev- 

 ron) on either side, near its base . . . Goniada brunnea 



1. Proboscis provided with many sharp, yellow teeth, resembling 

 the radula of a mollusk Glycinde armigera 



Goniada brunnea Treadwell 



Hartman, in preparation, AHF. 



This comes from Tomales Bay, in muddy sand flats. Length is 50 to 

 70 mm. 



