552 PROF. C. H. O'dONOGHUE : KEPOET OK 
The genital aperture, as usual, lies on the right side of the body near the 
anterior end. 
Labial Armature. No labial armature was found. 
Notes. One specimen only is in the collection, and this was accomjianied 
by the locality-label " Shore of Wooded Isle.'^ 
Eliot (36, pp. 305-356) calls attention to the difficulties encountered when 
trying to determine the position of a Cryptobranchiate Dorid, and in dealing 
with the present form they have come before me frequently. Bergh's family 
Dorididse (yryptobranchiatEe is divided into five sub-families and about 30 
genera, practically all of which were created by Bergh himself, and certain 
of them contain only a single species. The differences between some of the 
genera are so slight that^ unless Bergh^s own species are dealt with, it is 
difficult to determine where to place a new form. There seems no doubt 
that the whole family stands in need of considerable revision before it can be 
regarded as satisfactory. The present specimen agrees closely with the 
genus Asteronotiis, and in general form, and perhaps even colour, somewhat 
resembles the A. hempriclu Ehr. as figured by Eliot (36, pi. xxxiv.), but it 
differs in certain points. The radula formula is different, the individual 
teeth are not qiute same, the branchiaa number five, etc. For these reasons 
I have described it as a new species under the name of Asteronotus 
fuscus. 
Pamily GLOSSODOEIDID^ (Chhomodobidin^ Bergb). 
It has been pointed out above that Bergh's binomial familj'-name Dorididae 
CryptobranchiatsB cannot possibly be allowed to stand. It is proposed, there- 
fore, to split this group into several families, of which one is the same as the 
old Ohromodoridinae of Bergh. But, as the name Chromodoris has to be set 
aside for the older name Glossodoris, the familj'-name must be changed as 
above. 
The body is elongated, compressed, and soft; the colour is striking, often 
magnificent, and generally with lines or spots ; tlie notaaum is nearlj' always 
smooth, the pallial margin is fairly broad at the anterior and more particu- 
larly at the posterior end, but usually quite narrow in between ; the tentacles 
are small, conical, and generally partly eversible ; the branchial plumes are 
usually simply pinnate. 
The labial armature is strong and composed of minute rods. The rachis 
of the radula is very narrow and often furnished with minute compressed 
psoudo-teeth ; there are numerous pleural teeth of hamate form and generally 
with a denticulate margin, the first teeth are usually denticulate on both 
sides. 
There is no proper ventricle. 
The penis is unarmed. 
