248 JOURNAL OF CONCHOLOGY, VOL. TI, NO. 8, OCTOBER, I905. 



variety. The red lines on the branchit^ seem a connecting link 

 between the elaborate pattern found in Chr. semperi and the pure red 

 branchiae of Chr. nigrostriata from Zanzibar. 



Chr. semperi var. tenuilineans Farran. 



Two specimens from Maskat, which agree with the above described 

 var. nigrostriata in general characteristics, but differ somewhat in 

 colour. They are about 20 mm. long. There are no notes on the 

 living animals. 



The colour as preserved is pale greyish green of various shades. 

 The rhinophores and branchiae are brownish grey, probably represent- 

 ing an original red. 



In one specimen there is a fairly regular reticulate pattern on the 

 back and sides formed by the intersection of a few lines, which are 

 mostly dark green of varying intensity, though some are black. Tn 

 the interstices of the pattern are white spots, which are sometimes 

 formed by the confluence of two or three smaller ones. 



In the second specimen there are no lines at all on the sides, and 

 the lines on the back are faint and appear to be of much the same 

 colour as the rest of the dorsal surface, but to be rendered more con- 

 spicuous by having a white stripe on each side. There are three rows 

 of whitish spots on the back and two on each side of the body. 



The labial armature and radula are as described for var. nigrostriata. 

 The innermost teeth are distinctly trifid. 



These specimens, particularly the second, resemble very closely 

 Mr. Farran's Chr. teniiilinearis from Ceylon, from which they differ 

 only in having whitish spots as well as lines. 



Chromodoris sannio Bergh. (Pi. v., fig. 3). 



Bergh, " Mai. Untersuch," Se/nper's Reisen, xvii., p. 939. 



One specimen, apparently from Maskat. 



The notes on the living animal say merely, " Deep purple spots, 

 orange round margin." According to a rough sketch, the back is 

 yellowish with purple spots. Round the margin of the mantle runs a 

 border of orange spots, separated from one another by equal inter- 

 vals. The sides of the body are faintly purple, and the foot has a 

 distinct purple border. The rhinophores and branchiae are purple. 



The preserved specimen is stoutly built, 20 mm. long, 13 mm. 

 broad, and 11 mm. high. The back is arched; the colour is yellowish 

 white. Round the mantle-edge are distinct traces of a border, con- 

 sisting of alternate patches of orange and white. The sides of the 

 body are sloping, but the free-mantle margin is not wide. The foot 

 is rather narrow (6 mm.) ; the tail projects a little behind the body ; 

 the back is covered with scattered, small-pointed tubercles, lighter in 

 colour at the top. About twelve are rather larger than the others, and 



