146 Leodiddce from Fiji and Samoa. 



are long, extending beyond the end of the dorsal cirrus. The simple setse are also 

 long, slender, and sharp-pointed, extending beyond the cirrus, with lateral striations 

 along two sides (text-fig. 27). There were only 4 of these in the parapodium drawn. 

 A very small tuft of pectinate setse lie close to the base of the simple ones; they are of 

 the usual form but very small, with about 10 teeth. 



A parapodium from farther forward in the body (the thirty-fifth) differed in no 

 essential respects from the one just described, but had a larger number of compound 

 and fewer of the other two kinds of setse, and no ventral acicula. 



The maxilla (plate 3, fig. 18) is colored brown, darker between the halves of the 

 carrier; the base of the forceps, and the terminal portion of each half of the forceps. 

 The teeth are very clear-cut and prominent. The proximal paired plates have 6 

 teeth on the right and 5 on the left, the right distal paired has 10, the left distal paired 

 has 8 (the plate was rolled so that I was unable to get a clear view of its margin and 

 this number may not be quite accurate); and the unpaired has 6. The mandible 

 (plate 3, fig. 19) is rather more dehcate than the maxilla, colorless except for a pigment 

 patch between the halves and a line on either side near the margin of the beveled por- 

 tion. From these colored spots concentric lines run inward over the surface. At the 

 outer anterior angle of each side is a horn-like cyhndrical extension of the plate, which 

 has a peculiar whitish tint, and is quite unusual for this genus. 



Leodice armillata was collected on Aua and on Utile reefs in Pago Pago Harbor. 

 Samoa. 



The type is in the American Museum of Natural History. 



Leodice crassi-tentaculata, new species. 

 Plate 4, figures 1 to 5; text-figures 30 to 33. 



A single specimen, collected on Utile reef in Pago Pago Harbor, in a loose coral 

 rock lying on the sand near the shore. It has a general color-resemblance to L. 

 biformi-cirrata, but can be distinguished from that species by the difference in the 

 tentacles. While in L. biformi-cirrata the tentacles are articulated and not especially 

 large, in L. crassi-tentaculata they are relatively enormous, being the largest as com- 

 pared with the size of the entire animal that I have ever seen in this genus. The 

 prostomial width of the specimen was 2 mm., the greatest body- width 3 mm. The 

 specimen was in two pieces; the anterior piece 145 mm. in length with about 158 

 somites; the shorter piece had about 100 somites and was 60 mm. long. The extreme 

 posterior end with pygidium was not found. 



In preserved material the anterior somites are mottled dorsally with yellowish 

 brown on pearly white; the sixth somite has more white than any other somite, and 

 there is a brilliant iridescence. This color gradually weakens away from the anterior 

 region, and disappears entirely behind somite 50, the remainder of the body being a 

 dingy yellowish gray. Anteriorly the ventral surface is iridescent, but has none of 

 the markings of the dorsal surface. 



The gills first appear as a single filament on the left side of somite 34 and on the 

 right side of somite 30, On the left side the second gill is 2-branched, while on the 

 right it is the fifth which has the first of the 2-branched gills. This 2-branched 

 condition is continued throughout the greater part of the specimen, but in the posterior 

 portion of the smaller fragment there is but one branch. Gills continue to the very 

 end of the specimen, losing, as above stated, in the posterior somites one of the gill 

 filaments, but there is no diminution in the length of the remaining filament. The 

 anterior gills are shorter than the dorsal cirri, but with the progressive decrease in 

 the size of the cirri posteriorly and their own absolute increase in length, posterior 

 ones are very much longer than the cirri. 



The prostomium is deeply bilobed, each lobe subdivided incompletely into a dorso- 

 median and a ventro-lateral portion, forming the quadripartite lobing found in many 

 Leodicids, The tentacles are very large, covering, when lying straight out in front, 



