uo 



LeodicidcB jrom Fiji and Samoa. 



are long and sharp-pointed. Thero arc no color characters to be noted. The animal 

 is entire, is 25 mm. long, and its greatest width is 1.5 mm. There are about 110 

 somites. 



The gills begin on setigerous somite 12 and extend to within about 10 somites of 

 the pygidium. There is never more than one filament, which in most of the somites 

 is quite similar in size and length to the dorsal cirrus. Toward the posterior end 

 these filaments are shorter than the dorsal cirrus. In somite 50 (plate 3, fig. 4) the 

 filament is also shorter than the dorsal cirrus, but a little stouter. 



The prostomium (plate 3, fig. 1) is prominent, deeply incised, almost as long as the 

 peristomium, but narrower. The tentacles are not quite twice as long as the pro- 

 stomium, the longest barely reaching the anterior border of somite 4. The median 

 and inner paired are almost of the same length, the outer paired arc considerably 

 shorter than these. They are all 

 smooth and slender, with acute 

 apices. There is a considerable 

 distance between the bases of the 

 median and the inner paired, so 

 that a large part of the dorsal sur- 

 face of the prostomium is uncov- 

 ered. The eyes are inconspicuous. 



The peristomium is on its dorso- 

 median line about as long as the 

 three following somites, its lateral 

 margins very nearly straight, the 

 small lip on either side not very 

 prominent. Somite 2 is very short, 

 the boundaries between it and 

 somites 1 and 3 being very indis- 

 tinct. The nuchal cirri are slender, 

 about half as long as the first 

 somite. 



The tenth parapodium (plate 3, 

 fig. 3) has a slender dorsal cirrus 

 into which needle aciculse extend, 

 the setal lobe long, but with an un- 

 usually short dorso-ventral diam- 

 eter. The anterior Up of the setal 

 lobe is rounded; the posterior Hp is 

 a cirrus-like protrusion extending 

 beyond the anterior. Between the 

 two a large acicula with a bent apex 



comes to the surface and extends beyond the end of the posterior lip. Dorsal to the 

 acicula is a tuft of simple setae, 4 in number in the parapodium dra\\Ti; ventral to 

 it a tuft composed of two kinds of compound seta. No pectinate setse appear in the 

 tenth parapodium, but they are in the eleventh. I am uncertain as to their exact 

 distribution. Where there are so few of each kind of seta in a parapodium it is not 

 possible to be sure that non-appearance may not be due to accidental loss and exact 

 data concerning their distribution seems impossible to procure, if indeed it is a matter 

 of any especial importance. The ventral cirrus is short, acute on the apex, and carried 

 on the end of a pad-like swelling. 



The fiftieth parapodium (plate 3, fig. 4) has a conical setal portion, the slender 

 dorsal cirrus arising from a common base with the gill, which is a little shorter than the 

 cirrus but stouter. The ventral cirrus is finger-shaped. I could find no needle acicula 

 in the dorsal cirrus. The most noticeable feature of this parapodium is the very large 



19 



Text-Figures 17 to 25. 



17 to 23. Leodice tubicola. 17, compound seta 

 X 250; 18, compound seta X 250; 19, simple seta 

 X 250; 20, pectinate seta X 600; 21, postero-dorsal 

 acicula X 250:22. postero-ventral acicula X 250; 23, 

 anterior acicula X 250. 



24 and 25. Leodice aciculata. 24, ventral acicula 

 X 250; 25, compound seta X 250. 



