1906.] OF SOUTHERN^ IXDIA AXD CEV'LOX. 1001 



the animal should be called, so far as our present knowledge goes ; 

 but in the following descriptions I have thought it safer to put 

 first the names wintten on the bottles by Alder and Hancock, 

 which imjDly no identifications into which an element of theoiy 

 may possibly enter. 



Doris gloriosa Kelaart. 



^ Hexahranchus onarginatus Q. & G. 



The labial armature and radula confirm this identification. 

 The formula of the r-adula is about 30 x 60.0.60 asa maximum. 

 The teeth are hamate and rather erect ; the outermost smaller 

 but not degraded ; the 4-5 innermost mai-kedly smaller than the 

 rest and almost withou.t hooks, as if the tips were broken off. 



Doris gle^'iei Kelaart. 



= Chromodoris gleniei (Kelaart). 



A labial armature and radula are preserved, showing that 

 Alder and Hancock dissected a specimen, though, so far as I 

 know, they have left no record of their investigations. 



The labial armature consists of two grey, roughly triangular 

 plates, distinctly separate but almost touching one another. 

 They are composed of bent rods, slightly swollen at the tips. 



The yellow radula has a formula of about 60 x 70.0.70. On 

 the rhachis are lozenge-like areas. The teeth are sti'ong and 

 erect and bear at least 6-8 denticles on the outer side. As the 

 teeth are in situ and none are isolated, the denticles are nowhere 

 easy to see and become almost invisible in the last 30 teeth, 

 though since they can be seen here and there they are perhaps 

 present on all. The innermost teeth are broad and bear at least 

 one large denticle on the inside and perhaps two or three. The 

 outermost are low, not denticulate on the top, but bearing one 

 jag or denticle at the side. 



This radula and labial armature show that D. gleniei is a 

 Chromodoris, and support the idea that it is closely allied to 

 Chr. cavce Eliot, which may be a variety of it. 



Chromodoris zebrina. 

 A. & H. 1. c. p. 123. 



Alder and Hancock describe the radula as a generic character 

 but their remarks, confirmed by the slides, show that the 

 description applies to the species Chr. zehrina. 



The buccal parts as pi'eserved comjorise a labial armature and 

 radiila. The former consists of two plates, composed of elements 

 arranged in unusually regular rows and apparently mace-like in 

 shape, though none are completely isolated. The outer ones are 

 bifid, but this feature is not so plain in those near the centre of 

 the plates. 



The radula is in confusion, but consists of at least 40 rows 

 containing numerous, minute, two-pronged teeth which bear 3-4 



66* 



