[9] 
'6), who gave a very thorough description of the nervous system and 
whose results made him agree with v. InERına in regarding Neo- 
menia as more or less allied to Chiton and closely to Chaeto- 
derma; secondly by Kor£x and DanIELssEn (16) who had numerous 
specimens at their disposal and distinguish no less than seven dif- 
ferent species. The latter authors have promised us a more extens- 
ive monograph on the genus: their preliminary paper is especially 
instructive with regard to the generative system and the eirculatory 
apparatus. They are opposed to the view of any close relationship 
existing between Neomenia and Chiton, but wish to regard the 
former genus as a separate order of the Opisthobranchia, to which 
they give the name of Telobranchiata. i 
Very lately KowatLewsKy (18) describes a new species of Neo- 
menia with remarks on the anatomy; those on the generative 
system being more especially worthy of note. 
GEGENBAUR (3) has created a separate division of Vermes: 
the Solenogastres, for the reception of Neomenia and Chaetoderma; 
our limited knowledge of these animals appears to him insufficient 
to form any definite judgment as to their position in the system; 
nevertheless he regards the ventral furrow, present in both these 
genera, as the foreshadowing of the plantar surface of the lower 
Mollusks. 
Ray LANKESTER (21) regards Neomenia as one of the most ar- 
chaic genera of Mollusks, allied to Chiton and Chitonellus but 
still occupying a phylum by itself which he entitles the Scoleco- 
morphae and which forms the first subdivision of his Mollusca 
eucephala. 
The specimens of Neomenia examined by TULLBER& and v. GRAFF 
measured about 25 mm., those of KorREN and DANIELSSEN were 
generally of the same size, only one species (Solenopus sarsii) at- 
taining the exceptional size of 70 millim. For this reason I was gladly 
surprised in obtaining two specimens of an apparently closely related 
genus, which our energetic naturalist Dr. ©. P. SLUITER had dredged in 
the Barents-Sea (see Map, red ns 9 and 11)at a depth of 110 and 160 
