158 Leodicidce from Fiji and Samoa. 



Lumbrinereis sphaerocephala Schmarda. 



Text-figure 51. 



Notocirrus sphctrocephala Schmarda, 1861, p. 116. 



Lumbriconereis sphatrocephala Ehlers, 1904, pp. 33-34, pi. v, figs. 3 to 11. 



LumbriconereLs sphierocephala Augener, 1913, p. 288. 



A single specimen was collected at low tide in Suva Harbor, Fiji. The living animal 

 is more like Oenone than Lumbrinereis in its general appearance, for it has a soft body 

 which secretes much mucus and it moves much more slowly than is usual in Lum- 

 brinereis. In life the prostomium varies in form according to the degree of contraction, 

 but is always nearly hemispherical. The greater part of the dorsal surface of the 

 prostomium is colored dark gveenish-brown, leaving only the margin uncolored. 

 On the dorsal surface of the peristomium are two pigmented bands with sharply 

 defined pigment row^s lying in the broader one. Similar cross-bands appear in following 

 somites, but gradually decrease in size posteriorly, so that behind the one-hundredth 

 somite the dorsal surface of each somite is marked only by many minute spots of a 

 golden color. The ventral surface has a yellowish tint, but no pigment. Interseg- 

 mental constrictions are uncolored. Preserved material as far back as somite 30 is 

 reddish brown with darker bands in the middle of each somite, while behind this the 

 whole animal has a decidedly greenish tint. 



In the structure of the head region, the parapodia, and the jaws my specimen agrees 

 with Ehlers's description, except that the prostomium is more rounded than is shown 

 in Ehlers's figures 3 and 4. The teeth in the setae are more sharply defined than Ehlers 

 represents them (text-fig. 51) , but this may have been merely an error made by his artist. 



Ehlers's material was collected at Pitt's Island and Chatham Island; Schmarda's 

 at Auckland, New Zealand; Augener 's at Station 1, Sharks Bay, northwest of Middle 

 Bluff, in 7 to 8 metres; Station 26, Sharks Bay, Sunday Island, 5.5 meters; Station 56, 

 Koombaua Bay, 6 to 7 English miles southwest of Bunbury, 14.5 to 18 meters. 



Benham (1915, p. 227) records a single specimen identified as of this species from 

 east of Babel Island, Bass Strait. 



Lumbriconereis brevicirra Schmarda. 



Lumbriconereis brevicirra Schmarda, 1861, p. 117. 



Lumbriconereis brevicirra Ehlers, 1904, pp. 35-36, pi. iv, figs. 13 to 20; pi. v, figs. 1 and 2. 



Lumbriconereis brevicirra Augener, 1913, p. 288. 



Two specimens were collected at Rat Passage, in Suva Harbor, Fiji, in sand at the 

 bottom of a shallow pool on the surface of the reef at low tide. Later some were col- 

 lected in mud near the Carnegie Library at Suva. In the preserved material the two 

 from Rat Passage are uniformly dark gray in color, with only very faint pigment bands 

 in some of the posterior somites. In hfe each had a median and two lateral pigment 

 patches on both the dorsal and ventral prostomial surfaces. The median patches 

 are circular in outline, the lateral ones are nearly linear. In the specimens from the 

 mud the whole body-color is much lighter and the prostomial pigment patches are 

 very prominent. In these latter specimens each somite throughout the body has a 

 transverse reddish-orange pigment band, covering more than half of the dorsal and 

 ventral surfaces. There are two pairs of anal cirri, one of which, in one specimen, 

 was bifid. 



The Fijian specimens agree with Ehlers's figures and description in the form of the 

 prostomium and in the nearly complete fusion of somites 1 and 2, They all show more 

 of the longitudinal plications on the ventral surface of somite 2 where it extends 

 forward to form the boundary of the mouth than Ehlers shows in his figure 13, and I 

 saw no trace of the everted nuchal organs Ehlers shows in his figure 14. The parapodia 

 have longer posterior cirri than Ehlers describes, but the structure of setae and aciculae 

 correspond with his description. In the jaw apparatus the maxilla is as Ehlers 



