432 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



they emerge from the superior end of the neuropodial tori. In addition, 

 in prebranchial segments the superior part of the neuropodial lobes is 

 vesicular and inflated; it appears somewhat transversely ridged or 

 wrinkled when preserved in alcohol. The thoracic epithelium is distinctly 

 areolated. 



Abdominal hooded hooks are uniformly similar throughout, as typical 

 of other species of the family where they have been examined. The shaft 

 has a gently sloping, dispersed node. The hood is spacious, with fine 

 denticulated edge; this is somewhat overhanging and is so close to the 

 crest that the serrated edge sometimes distorts the appearance of the teeth 

 in the crest, leading to an erroneous impression that there are several 

 rows of teeth in the crest. The fang is strong and slightly curved, 

 crowned by a transverse row of 3 small, well separated teeth (pi. 56, fig. 



4). 



D. lumbricoides has sometimes been referred to the older D. caducus 

 (Grube) (see Eisig, 1887, p. 823 and Fauvel, 1927, p. 148) or has been 

 considered at most as a variety of the stem species (see synonymy above). 

 I have no specimens of D. caducus, hence cannot make comparison, but 

 according to published accounts the 2 species seem to be separable in that 

 the anterior abdominal notopodia are widely separated from each other in 

 D. caducus and are proximal to each other in D. lumbricoides. All of 

 the specimens enumerated above are of the latter kind. 



Distribution. — D. lumbricoides has been widely reported from cosmo- 

 politan areas. It is represented in the collections by individuals from 

 California, western Mexico, southwestern Florida and Beaufort, North 

 Carolina, all from shore stations. 



Dasybranchus lunulatus Ehlers 

 Plate 56, Figs. 1, 2 



Ehlers, 1887, pp. 174-177, pi. 45, figs. 5-9. 



Collections. — Lemon Bay, southwestern Florida, in muddy shoals; 

 Thornton Island, near Englewood, Florida, in muddy sand (7). 



The prostomium is largely concealed by the overhanging, collarlike 

 peristomium ; when the latter is pushed back the prostomium is seen as a 

 thick, short lobe, broadly rounded anteriorly or with a slight median 

 emargination. There are 2 conspicuous patches of reddish brown eyespots 

 at the sides located in front of the nuchal slits. The first segment or peris- 

 tomium is nearly 2^^ times as long as the following one. 



