238 PROCEEDINGS OF THE ACADEMY OF [April 



minute conical style about one-half as long as the ceratophore. Paired 

 tentacles minute papillse immediately ventro-lateral of the ventral 

 eyes. Palps smaller than usual, irregularly ovate with narrower 

 prolongations not continuous with the peristomial parapodia, but 

 entering the cleft between them. Mouth bounded by rugous lips 

 formed laterally by III and IV and posteriorly by IV and V. 



Segments 36, all well defined, especially ventrally where they are 

 superficially wrinkled. Neural furrow slight, median dorsal naked 

 field slightly exceeding one-fifth of total width, the triangular inter- 

 segmental areas rather obscure. Caudal cirri short and thick, each 

 folded longitudinally on itself so that the lamellar form is obscured. 



Parapodia as in E. dumosa. Notocirrus arising just dorsad (mediad) 

 and slightly caudad of the notopodial setse, rather short, simple, 

 tapered and reaching slightly beyond the middle line. Neurocirrus 

 similar, arising just within ventro-posterior portion of setse fascicle. 

 Intermediate cirrus situated about three-fifths length of setse palisade 

 from its dorsal end or at least ventral to its middle, opposite interval 

 between sixth and seventh or fifth and sixth gills from the dorsum 

 arid between the setse palisade and series of gills. 



Branchiae (PI. XV, figs. 7, 8), usually twelve pairs on each side of 

 middle segments, but somewhat fewer toward the ends of the body. 

 The nine dorsalmost form a straight row well behind the setse and 

 cirri, the three lowermost occupying the interramal space and usually 

 separated from the others by a short interval. Each gill has a very 

 short trunk soon divided into two, each of which is again divided 

 dichotomously about four or five times to form thirty or more long 

 terminal filaments. All parts of the gill are slender and the terminal 

 twigs so numerous and long that they form a dense interlacing mass 

 between the rows of setse, the longest of which, however, rise well 

 above and shelter them. 



Setse all colorless and transparent and of one type, none being 

 serrate or strictly bifid. Notopodials (PI. XV, fig. 9) erect in a narrow 

 palisade of three irregular rows, those of anterior and posterior rows 

 small and less than the gills in length; those of the middle row are 

 fully twice as long and thick and rise conspicuously above the gills. 

 All are alike hollow, calcareous and brittle, with rather long, slightly 

 curved, smooth tips strongly annulated or camerated within and 

 bearing a prominent, subterminal, divergent spur. Neuropodial 

 setse are of the same type and those in the ventral part of the bundle 

 (PI. XV, fig. 10) differ little except in length from the longer notopodial 

 setse. Dorsal neuropodials (PI. XV, fig. 11), however, are much 



