PONTOGENIA CURVA. 83 



These specimens agree in general appearance and structure with the descrip- 

 tion of the typical examples. The ventral setae are typical excepting that the 

 tip is somewhat less strongly hooked. The dorsal setae also agree excepting 

 that the curvature mentioned as evident in certain views does not appear clearly 

 in these specimens. The ventral cirri seem to be larger than in the types as 

 they are easily seen with the naked eye. 



This is a widely distributed form, having been recorded from the region 

 of Kerguelen and from south of AustraUa as well as from the North Pacific. 

 It has a large bathymetrical range, having been taken in Suruga Bay at a depth 

 of only 26 fms. (Albatross), and in the North Pacific (lat. 35° 22' N., long. 

 169° 53' E.) at the great depth of 2,900 fms. (Challenger). 



Laetmonice sp. 



A single specimen of a form which has been at some time dry, is in poor 

 condition for satisfactory study. 



Locality. Off the Galapagos Islands: Sta. 3400 (lat. 0° 36' S., long. 86° 

 46' W.). Depth 1,322 fms. Bottom light grey Globigerina ooze. Bottom 

 temp. 36.1° F. Exped. 1891. 



PoNTOGENiA Claparedc. 



Ann^lides Chetop. Golfe Naples, 1868, p. 57; Grube, Jahresb. Schlesch. gesellsch., 1875, p. 68; Annu- 

 lata Semperiana, 1878, p. 19; Ehlers, Mem. M. C. Z. 1887, 15, p. 46; Dakboux, Bull. sci. France 

 & Belgique, 1900, 30, p. 102. 



PONTOGENIA CURVA, Sp. nOV. 



Plate 10, fig. 2-7; Plate 11, fig. 12. 



The body in general outline is oblong, with the caudal end much narrowed 

 as usual and the anterior end more broadly rounded. Evidently there is con- 

 siderable deformation through the specimens having been at one time dry. 

 The precise number of somites could not be determined, but there are near 

 twenty-seven to thirty pairs of parapodia. The length of the type, exclusive 

 of the setae, is at present near 9.5 mm. and with the setae, 12.5 mm. The 

 width to the bases of parapodia is 3.5 m.; to the tips of the parapodia is 6 mm.; 

 and to the tips of the setae, 10 mm. The paratype is 8.3 mm. long, with the 

 \vidth of body proper 3.2 mm., to tips of parapodia, 7.25 mm., and to tips of 

 setae, 11.5 mm. 



