154 LeodicidcB from Fiji and Samoa. 



In both of the specimens at my disposal the jaw apparatus was incomplete, appar- 

 ently due to injury. The carrier is large, the forceps have heavy bases and slender 

 apices, and the proximal paired plates each has 3 teeth. I could find no other plates 

 (plate 6, fig. 5). The mandible is composed of slender halves rather widely separated 

 (plate 6, fig. 6). 



The type is in the American Museum of Natural History. 



Genus ONUPHIS Audouin et Milne Edwards. 

 Audouin et Milne Edwards, 1834, p. 151, pi. 3a, figs. 1 to 5. 



Prostomium with 7 appendages arranged in 3 rows, the anterior row of two "frontal 

 tentacles" or "frontal palps," short and rounded at the ends. Other appendages on 

 ringed cirrophores. Anterior parapodia produced so as to extend in front of the 

 prostomium. The gills are pectinate or simple. With one pair of nuchal cirri. 



Onuphis may be distinguished from Diopatra by the gills, which in the latter genus 

 are spirally coiled, and from Hyalinoecia by the possession of nuchal cirri lacking in 

 Hyalincecia. 



Onuphis holobranchiata v. Marenzeller. 



Onuphis holobranchiata v. Marenzeller, 1879, p. 24-26, pi. 4, fig. 1. 

 Onuphis holobranchiata Crossland, 1903, p. 135, pi. 14, fig. 2. 

 Onuphis holobranchiata Augener, 1913, p. 283-284. 



A single incomplete specimen lacking the posterior end was collected in Suva 

 Harbor, Fiji. What remains of the body is 30 mm. long, 2 mm. in greatest width, and 

 contains 69 somites. The color is a uniform dark brown, with brilliant iridescence on 

 the dorsal anterior surface. In all details of surface structure this agrees closely with 

 v. Marenzeller's description and figures. In the jaws there are only slight discrepan- 

 cies, the carriers having more globular outlines than v. Marenzeller described. 



Augener suggests that this species may be identical with Johnson's Onuphis {Northia) 

 elegans and iridescens (1901, pp. 406 to 408, plates 8, 9, figs. 77 to 92). In gill structure 

 0. holobranchiata agrees more closely "\\'ith Johnson's species elegans than with irides- 

 cens. I have compared the Suva specimen with one of 0. elegans which I collected at 

 Friday Harbor, Washington. Neither has the 3-jointed inner paired tentacles figured 

 by Johnson, but my Friday Harbor specimen agreed in other details, especially as to 

 the jaws, with Johnson's description, and differed in jaw structure from the Suva 

 specimen. I think they are distinct species, though closely related. 



V. Marenzeller's specimens came from the east coast of Enosima Island, and 

 Augener's from Sharks Bay, Freycinet, estuary between Baba Head and Cararong 

 " Halb-Inseln, " in 7 to 11 meters. 



Genus LYSIDICE Savigny. 

 J. C. Savigny, Systems des Annelidas, 1820, p. 13. 



With a jaw apparatus like that of Leodice, but with only 3 tentacles and no nuchal 

 cirri. The mandible is usually very large as compared ^vith the maxilla. Generally 

 rather small in size. 



Lysidice fusca, new species. 



Plate 6, figures 7 to 13; text-figures 42 to 44. 



Collected both at Suva in Fiji and at Pago Pago Harbor in Samoa. The animal 

 lives in the porous rocks in association with Nicidion, and in Samoa is as abundant in 

 the porous surface of the dead rock as is Nicidion in the West Indies. Because of 

 the way it twists its body into the intricate cavities of the rock, unbroken specimens 

 are difficult to secure. 



There is considerable variability in both size and color. The specimen whose 

 maxilla is drawn in figure 12 was 2 mm. in body diameter, and this would be about 

 the maximum size. The most characteristic coloration is that figured (plate 6, fig. 7), 



