NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 155 



Chamberlin (1919, pp. 327-328) reported L. bifilaris from the Gulf 

 of California, south to between Panama and the Galapagos Islands, but 

 described the acicula as blackish and illustrated the mandibles and maxil- 

 lae about as they are in L. bicirrata (below). I take these to be, also, not 

 the same as the species as herein defined, but probably L. bicirrata, below. 



L. chilensis Kinberg (1865, p. 569) from Valparaiso, Chile, may be- 

 long to L. bifilaris Ehlers (but Kinberg's name is the older), since it also 

 has bilabiate parapodia posteriorly and yellow [?] acicula, but the pro- 

 stomium is shown to be broad and flat. 



Distribution. — Chile, north to southern California; in depths of 4- 

 138 fms, based on these records. 



Lumbrineris minima, new species 

 Plate 14, Figs. 308-314 



Collections.— 903-Z9 (1) ; 905-39 (1) ; 1441-41 (3) ; 1442-41 (3) ; 

 1445-42 (5); 1447-42 (1). 



This is a long, slender species, resembles a drilonereid because of its 

 extreme slenderness and its minute parapodia. Mature individuals, with 

 large eggs, measure only about 2 mm wide and over 100 mm long for 

 255 segments (nearly complete). The prostomium is elongate, conical, 

 slightly depressed, nearly \\i, times as long as wide (pi. 14, fig. 311), 

 slightly paler than the rest of the body. There are no eyespots or other 

 color markings. The first 2 apodous rings are subequal in length, but eacR 

 is shorter than the first setigerous ring (pi. 14, fig. 311). Parapodia are 

 small throughout, but already from the first one are about as conspicu- 

 ous as any others because of the spreading setal fascicle and the broad, 

 postsetal lobe. 



In the type (coll. 905-39) the first 12 parapodia are provided with 

 only simple, bilimbate setae in addition to about 3 yellow acicula. In 

 another (coll. 903-39) simple hooks are already present from the first 

 setiger. A ninth parapodium has the proportions and parts shown in pi. 

 14, fig. 309. From the thirteenth parapodium there are 2 slender, simple, 

 hooded hooks in the middle part of the setal fascicle, accompanied by 3 

 superior and 2 inferior bilimbate setae. A hooded hook from an anterior 

 segment has a long, hooded region (pi. 14, fig. 310) as typical of the 

 genus when hooks are present. Farther back the postsetal lobe becomes 

 slenderer and only slightly longer, is directed obliquely upward, but does 

 not noticeably elongate before a postmedian region. Thereafter the pre- 

 setal lobe gradually elongates so as to surpass the postsetal one and is 

 thereafter the longer (pi. 14, fig. 308). An unequally bilabiate condition 



