188 THE ANNELIDA POLYCHAETA. 



continue, each bending out to the base of the corresponding tentacle. The 

 anterior eyes are much larger than the posterior and are much farther apart. 

 All eyes distinct. 



The setae, as in several other species of the genus, are of a distinctly green- 

 ish color excepting the transparent distal piece. The tip of the distal piece 

 presents the usual tooth below the apex. The subapical tooth proportionately 

 stout, nearer the apex than usual, the lamina not extending beyond the apex 

 of the lateral tooth. (Plate 22, fig. 7, 8). 



Localities. Paumotu Archipelago: Fakarava. 12 October, 1899. Three 

 specimens. 



Paumotu Archipelago: Makemo. Reef fiat. 20, 21 October, 1899. Two 

 specimens. 



These specimens agree in general with the description by Grube of speci- 

 mens from Samoa and the Philippines. They seem to be somewhat different, 

 however, in the form of the prostomium and the character of the furrows on its 

 dorsal surface. But the form of the prostomium appears dissimilar in the 

 different specimens and according to age, and especially with slight variation in 

 orientation when studied. Grube's description is not sufficiently exhaustive, 

 however, to remove all doubt as to the identity of the species. 



Hesione panamena, sp. nov. 

 Plate 22, fig. 9, 10. 



The body consists of nineteen somites, of which sixteen bear parapodia. 

 The length of the type is 40 mm. and its greatest width between bases of para- 

 podia is 6.6 mm., this being at the tenth somite. The dorsum is much less 

 arched than in H. splendida Savigny, and also, to judge from descriptions, than 

 in the closely related H. reticulata Marenzeller, and the body appears propor- 

 tionately broader. 



Dorsum, excepting the lateral cushions, marked with numerous, cinnamon- 

 colored, longitudinal lines which are interrupted. Anteriorly and as far caudad 

 as the middle is a median dorsal line of this color somewhat heavier than the 

 others and on each side of this are five, or at places incompletely six, broken fines, 

 the color-pattern being thus very fike that in splendida and in the Philippine 

 form described by Grube as intertexta. The distinctly bisulcate venter is, 

 laterad of each sulcus, a dilute cinnamon color of a vague rosy tint. Between 

 the sulci the venter is lighter, obscure yellow, excepting in some parts immedi- 



