148 



Leodicidce jrom Fiji and Samoa. 



broken in removing and only one half is drawn. Each half is colorless except for 

 faint lines along the line of contact of the two, and dark lines are at the median margin 

 and outer angle of the beveled portion. From these patches of pigment concentric 

 lines extend over the surface. 

 The type is in the American Museum of Natural History. 



Leodice bifonni-cirrata, new species. 

 Plate 4, figures 6 to 11; text-figures 34 and 35. 



Collected both at Suva in Fiji and in Pago Pago Harbor, Samoa. A specimen from 

 Samoa is about 95 mm. long and has a peristomial width of 2 mm. The body contains 

 about 112 somites. The general body-color in life is an irregular splashing of white on 

 a yellowish-brown background, the white being especially prominent on the anterior- 

 dorsal face of the peristomium and on the fourth setigerous somite, which is entirely 

 white, and a brownish dorso-median patch toward the posterior end. In some ten- 

 tacles there is brown pigment in the constrictions between the 

 joints. The tentacles are distinctly articulated with a small 

 basal joint, the second joint being the longest of any, while at 

 the apices they are moniliform. In a Suva specimen the median 

 tentacle has 16 joints, the left inner paired one has 14, the right 

 inner paired one has 11. It seems probable that accidental injuries 

 are responsible for variations in this respect. The form of the 

 peristomium and prostomium is indicated in figure 6, plate 4. 

 The nuchal cirri are shorter than the peristomium and more or 

 less wrinkled, but without articulations. The anal cirri are artic- 

 ulated (plate 6, fig. 7) and have brown pigment between the joints. 



On one specimen the gills begin as a 2-branched organ on 

 the fourth setigerous somite, become 4-branched on setigerous 

 somite 5, 6-branched on setigerous somite 6, 7-branched on se- 

 tigerous somite 8, and 6-branched on setigerous somite 12. 

 From setigerous somites 15 to 20 the number varies between 5 

 and 6, but later decreases, the usual number being 3, though 

 there are exceptionally 5. The last gill has one filament and 

 is on the fifth para podium in front of the pygidium. 



The first parapodium has large cirri, but shows no especial characteristics. The 

 tenth parapodium (plate 4, fig, 8) has a stout setal lobe with rounded posterior lip, 

 2 very heavy dark aciculae which extend beyond the end of the posterior lip, and needle 

 aciculae in the dorsal cirrus. The dorsal cirrus is large and more or less wrinkled, but 

 is not at all articulated, and a 4-branched gill arises near its base. Just inside the 

 body-wall on the dorsal surface of the parapodium is a black pigment spot and there 

 is a smaller brown one near the ventral surface. The dorsal spots can be seen in a 

 surface \'iew of the entire animal. The ventral cirrus is ovate on the end of a pad-like 

 sweUing. The thirty-fifth parapodium is very similar to the tenth in general appear- 

 ance, but the ventral pad has disappeared and the ventral cirrus is much larger, extend- 

 ing to a considerable distance beyond the setal lobe. The dorsal cirri and gills are as in 

 the tenth, but a ventral hooked acicula has made its appearance. In posterior somites 

 the parapodia change very Uttle in their general character, but the ventral pigment 

 spot disappears and there is a gradual decrease in the number of gill branches. 



The compound seta (text-fig. 34) has a heavy basal portion and a relatively small 

 terminal joint, the latter with two large teeth. The simple setae vary in length but all 

 have clearly seen denticulations along one edge. Some are nearly straight, others are 

 much longer and curved. The pectinate setse are delicate with about 20 terminal 

 teeth, the terminal one at one end being the longest. 



The maxillae are extremely delicate and were very easily broken, so that I was not 

 able to get an entire one mounted for study. Figure 9 of plate 4 shows the right forceps 



TEXT-FiQUREa 34 



AND 35. 



Leodice biformi-ciTrata. 

 34, compound seta 

 X 185; 35, acicula 

 X 185. 



