548 A. JE. Verrill — Niidlbranchs and naked 



its anterior lobes much prolonged, slender, acute, usually curved 

 back. 



Body white ; dorsal papillfe dark gray with white tips. 



Bailey Bay, in corallines ; one example. Length 10'°'". 



Doris (?) bistellata, sp. nov.* 

 Plate LXVI. Figure 2. 



Body oblong-elliptical, rather thick and elevated, convex. Foot 

 thick. Rhinophores clavate, plicated, retractile, without sheaths. 

 Gills seven, retractile, pedunculated, some of them forked near the 

 base, with few branches. 



Proboscis large white, extensile. 



Upper side rich dark purplish brown ; back with two median large, 

 irregularly stellate spots of flake-white, and with small scattered 

 specks of white on body, head, gills, and sides of foot ; under side 

 of foot white with brown spots. 



Length, 15 to 20'"'°; breadth, 6 to 8'"'". 



Castle Harbor, 2 to 4 feet, on reefs or dead corals, April 18. 



Doris (?) olivacea, sp. nov. 



Body small, in life elliptical or broad ovate, when at rest capable 

 of considerable extension ; both ends broadly rounded. Foot nar- 

 row, scarcely extending beyond mantle posteriorly. Mantle border 

 wide, thin, undulated. Head lunate. Rhinophores small, conical, 

 without sheaths, retractile. Gills retractile, numerous, slender, pin- 

 nate. Color pale green to dark olive-green above, with specks of dark 

 green and with a darker green median patch ; gills dark green ; 

 rhinophores dark olive-green; under side of mantle lighter green. 



Length, 10'"'"; breadth, 6"^"^. 



Bailey Bay, among corallines, April. 



Lamellidoris lactea, sp. nov. 



Body, in life, small, oblong elliptical, much depressed ; edges of 

 mantle thin, undulated. Dorsal surface little convex, covered rather 

 uniformly with numerous small, obtuse, spiculose verrucae. 



* This and some of the other species are here referred doubtfully to the old genus 

 Doris, because their anatomy and dentition have not been studied, owing to lack of 

 more than one example in most cases. None of them belong to Doris, as now 

 restricted. 



