Leodicidcc frotn Fiji and Saynoa. 155 



in which there is a sharply defined dark patch on the d(jrsal surface of the prostomium 

 and the first 3 somites are dark brown with numerous white spots. Somites 4 and 5 

 are uncolored and the remainder of the body is hke the anterior region, except that the 

 colors are hghter. In most of the body each somite has a narrow darker band across 

 its anterior margin. The pygidium (plate 6, fig. 8) is darker than is most of the 

 body, with a narrow very dark band across the posterior margin of each somite. 

 The third body somite may show less pigment than the first and second and there may 

 be a little pigment on the fourth and fifth. Preserved material shows at best only a 

 trace of this coloration and it may be entirely lost. 



The prostomium (plate 6, fig. 7) is deeply bilobed and is wider than the peristomium. 

 The tentacles are uncolored, the median one a little longer than the prostomium, 

 the two lateral ones extend just beyond its anterior margin. The kidney-shaped 

 eyes are very dark and prominent. 



The first parapodium (plate 6, fig. 9) has a heavy ventral and a more slender dorsal 

 cirrus; the tenth (plate 6, fig. 10) has a very large setal lobe and the ventral cirrus 

 is on the end of a heavy pad-like structure; in posterior parapodia (plate 6, fig. 11) 

 the setal lobe is conical and the ventral cirnis very small. In all parapodia the dorsal 

 cirrus is slender. The anterior parapodia have each one large acicula, to which a ventral 

 hooked acicula is added in later somites. There are no needle aciculse in the dorsal 

 cirri. There is one pair of stout anal cirri (plate 6, fig. 8). 



The setae are all very small. The tenth parapodium has a dense tuft of compound 

 setiP, each with a shaft serrated at the apex ; the terminal portion has a terminal and a 

 subterminal tooth covered by a hood uith serrated margin (text-fig. 42) . The pectinate 

 Betse are small, each with about 12 teeth (text-fig. 43). The simple setae (text-fig. 44) 

 are short, curved toward the ends, and with serrated convex margins. In the posterior 

 parapodia the pectinate setae are much larger than anteriorly and form a prominent 

 dorsal tuft on the setal lobe, while the other setae remain as in anterior somites. 



The maxilla (plate 6, fig. 12) is dark brown in color, the color deepening toward the 

 inner margins, though in the forceps the extreme margin is colorless. The carriers 

 are conical, almost as long as the forceps. The basal portion of the forceps is about 

 as long as the free fang. The right proximal paired plate has 3 teeth, the left has 4. 

 The right distal paired has 5 teeth, the left has 2. The unpaired plate has 3 teeth. 

 On either side is a small accessory plate. The mandible (plate 6, fig. 13) is relatively 

 rather large, each half with a decidedly rolled edge which is darker than the remainder, 

 (Note that it is drawn under about half the magnification of the maxilla.) Most 

 of the mandible is light in color, but there are numerous dark bands (plate 6, fig. 13). 



The type is in the American Museum of Natural History. 



Lysidice parva, new species. 

 Plate 6, figures 14 to 17; text-figures 45, 46. 



So far as my material goes, the animals of this species are of small size, the type, 

 which was the only complete individual in my collection, being 70 mm. long and at no 

 place more than 0.5 mm. in width. Other individuals were larger, but none more than 

 1 mm. in body-width. The anterior region of the living animal is colorless, except 

 for faint indications of brownish spots on the parapodia on either side. Behind the 

 colorless anterior region is one where there is a prominent dark spot on the dorsal 

 surface of each parapodium. Farther back the body-color is lemon-yellow, due appar- 

 ently to the intestine seen through the colorless body-wall. In preserved material 

 the color is a uniform brown. 



The prostomium (plate 6, fig. 14) is about as long as the peristomium and is bilobed, 

 this lobing being more noticeable in some individuals than in others. The median 

 tentacle is twice as long as the prostomium ; the lateral ones extend for about one-third 

 of their length bej^ond the prostomial border. The eyes are not very large, but are 

 very distinct, dark brown in color. The peristomium is nearly twice as long as somite 



