12 AMERICAN JOURNAL 



a simple cavity. Dorsal tentacles ovate, very obliquely lamel- 

 late, and retractile into simple cavities. Labial tentacles, none. 



Foot elongate oblong, transversely fissured and truncately 

 rounded in front, somewhat pointed behind, and during locomo- 

 tion projects behind the mantle. 



Color varies from a brownish red to an olivaceous, or deep 

 black, more or less dotted with white ; on some the dots are 

 grouped together, forming nebulose spots; margins blueish. 

 Dorsal tentacles pale, with deep brown lamellpe, and tipped with 

 white. Branchiae dusky olivaceous. Lower surface paler than 

 above and immaculate. 



Length, three and a half inches. 



Habitat, Island of Huaheine. 



Station, (in sheltered locations, on sea-weed, at low water mark. 

 Active in their motions. A. G.) 



Doris cOxMPTA, Pease. Plate 4, fig. 1. 



Animal oval, smooth, soft, subpellucid. Mantle widest at the 

 middle, rounded equally at both ends, depressly convex ; margins 

 thin, narrowly undulated, projecting equally on all sides beyond 

 the foot. Branchial plumes of moderate size, ten in number, 

 rudely arborescent, subpellucid, and retractile into a common 

 simple cavity. Anal tube prominent. Tentacles abbreviately 

 ovate, obliquely and closely laminate, and retractile into simple 

 cavities. Labial tentacles simple, small, diverging lobes. Foot 

 thin, subpellucid, narrow elongate, acutely rounded in front and 

 rounded behind. Color blueish white, dotted with brown, the 

 dots decreasing in size toward the margin of the mantle, and 

 remotely freckled with opaque white. Foot sparingly specked 

 with dusky spots. Branchial plumes blueish white. Tentacles 

 fawn yellow. 



Length, one inch. 



Habitat, Island of Apaiang. 



Doris rtjbrilineata, Pease. Plate 3, fig. 2. 



Animal smooth, flaccid, subpellucid, oblong oval, depressly 

 convex, rounded at either end, widest at the middle, and very 

 thin along the margins. Dorsal tentacles very large, on stout 

 peduncles, oblique, with eight or nine very oblique, coarse laminae, 

 tipped with a small truncate mucronation, and retractile into a 

 simple cavity. Branchial star small, consisting of six bipinnate 

 plumules, retractile into a large simple cavity. Vent very pro- 



