1D04.J FllUM EAST AFRICA AXD ZANZIBAR. 397 



15 mm., breadth 7, height 8. The mantle-edge is narrow except 

 over the head, where it is ample. The branchial opening is 

 minute ; the branchijB are small, 10 in number, and apparently set 

 in a perfect circle. The foot is roimded and gi-ooved in front ; 

 the shape of the head is spatulate. The labial armature is a 

 yellow ring of mace-like elements. The radula is small and 

 transparent, the formula being about 35.0.35 x 80. The ordinary 

 teeth are bifid, and all appear to have four denticles under the 

 top hook. The innei-most have one or two denticles on the inner 

 side. The outermost are irregularly serrate [vide PI. XXIV. 

 fig. 7). No rhachidian thickenings are to be seen. 



Although the published plates of Chr. lineata and Ghr. Mlaris 

 are remarkably difierent, the scheme of coloration is much the 

 same ; and I think it pi'obable that the two foims are really 

 varieties of one species. 



14. Chromodoris ?lixeata, var. nigrolineata. 



One specimen from Chuaka on the East Coast of Zanzibar. 



The notes on the living animal are as follows : — " Shape 

 spatula-like. Dorsal side whitish at edges, lemon-yellow medianly 

 with longitudinal black lines. Gills and ihinophores short, 

 orange-red. Underside colourless, but edge of foot and mantle 

 bright dark blue (not purple)." Size 18 mm. long, 6 mm. broad. 



The alcoholic specimen is of a waxy white. There are only 

 faint traces of the blue borders, but there are five distinct black 

 lines on the back, two of which are divided again so as to form 

 long loops. The mantle-edge is thick and narrow. It measures 

 about 2 mm. over the head and tail, but is hardly distinguishable 

 at the sides. The anterior end of the foot is rounded and grooved. 

 The small branchife are set in a cii-cle and exposed. The buccal 

 mass is small. The labial ai-mature is transparent, and consists 

 of I'ather irreguloi- short hooks, some cleft. The small trans- 

 parent radula is as in Chr. hilaris. 



15. Chromodoris ?magxifica Q. & G., var. 



One specimen fi'om Zanzibnr, dredged in 4 fathoms. 



The following are the notes on the living animal : — " 40 mm. 

 by 10 mm. Elongate in form, foi-e end spatula-shaped. Colour 

 white and rather translucent. Mantle with a thin yellow border, 

 within which was a band of deep but biilliant violet, broadest in 

 front and behind but broken latei'ally. There was also a violet 

 line along the sides of the foot, and six longitudinal lines of deep 

 chocolate-colour and different lengths along the back. They were 

 surrounded by thin clear lines of opaque white. There was also 

 a line of chocolate blotches along the side of the foot just below 

 the shelf-like edges of the mantle. Branchia' 10, simply pinnate, 

 with a band of orange-red along each side of each plume. Rhino- 

 phores a deeper tint of orange. The tail projected well behind 

 the mantle and bore chocolate blotches." 



The alcoholic specimen is of a pale yellow, with the above- 



[19] 



