18 SIR CHARLES ELIOT. 
backwards, so that the whole radula is fan-shaped. The front rows contain ten to 
fifteen teeth on each side of the rhachis, the middle rows fifteen to twenty-five, and 
the back rows twenty-five to thirty. The central tooth (fig. 17) is much broader than 
in the last species. In the front rows it is distinctly bifid, and the laterals close over it, 
but, as the rows widen, it becomes separated from the laterals by a distinct space and 
the cusp is irregularly indented. The outlines of the base both of this tooth and of 
others are very indefinite, and seem to melt into the membrane which bears the radula. 
AAS bY 
Fic. 17.—Bathydoris inflata—RHaACHIDIAN TEETH. Fig. 18.—Bathydoris inflata—Two First 
LaTERALS. 
The first lateral (fig. 18) bends towards the rhachis, and has a long base and a low 
flattened hook bearing one distinct denticle and an irregularly jagged edge on the 
inner side. The second lateral (fig. 19) has a squarer base, and the hook, though 
narrower, is still flattened, and bears a distinct terminal denticle. The third lateral 
(fig. 20) is much the same, and the rest gradually become straighter and more erect 
until the sixth or seventh attains the form which prevails until the end of the row. 
The teeth near the rhachis are flatter and more different from the rest than in 
SAA 
Fia. 19.—Bathydoris inflata— Fic. 20.—Bathydoris inflata— Fic. 21.—Bathydoris inflata--LatERaL 
SEeconp LATERAL, Turrp LATERAL. FROM THE MIDDLE oF Har Row. 
B, hodgsoni. The laterals (fig. 20) in the middle of each half row are stoutish but 
fairly erect. They often have the extreme tip bent, and bear a wing-like ridge at the 
side. The four or five outermost are rudimentary. 
As mentioned above, in spite of the differences in the dentition, branchie and 
other points, I do not think it impossible that this may be a younger specimen of 
B. hodgsoni. Owing to the condition of the internal organs, it is impossible to say if 
the stomach was armed with spines or not. 
