BBY) BULLETIN OF THE 
mesial line from head to prominence; eye-peduncles very short, cylindrical, 
retractile, and of a dark neutral color ; tentacles similar, but shorter and lighter 
in hue; below these last are a small subpellucid pair of false tentacles, a pro- 
longation of the sole of the foot; below, the foot is dull opaque white with a 
tallowy yellow tint and with an indistinct bluish streak along middle. 
One specimen under a stone in a wood, Ungeni Valley, Natal Colony. 
When the mollusk wishes to rest it withdraws its head completely, brings 
together the two margins of the foot, and then doubles under the tail end. 
The above is Mr. Gibbons’s description. In my generic description it will 
be seen that there is no jaw. The lingual membrane is long and broad, con- 
sisting of about 52 chevron-shaped rows of 27-1—27 teeth, all.as in Glandina, 
the central one differing only in being smaller than the adjacent marginals, and 
symmetrical, with a long, slender cutting point : there are no laterals, all the 
side teeth being purely aculeate marginals and first rapidly increasing and then 
gradually decreasing in size as they pass off laterally, as is usual in Glandina 
(Pl. II. Fig. B). Buccal mass very large indeed. 
The internal shelly plate is quite thick ; it was in several pieces when found 
by me, but I doubt not its being in a single subhexagonal plate when perfect. 
It is 3 mill. long. 
I regret that the dried condition of the single specimen received prevented 
my examining the character of the tentacles and the internal anatomy, espe- 
cially to learn if the sexual organs be separated, as in Veronicella and Vaginulus. 
Onchidella Carpenteri, W. G. Bryn. 
Gulf of California. Mr. R. E. C. Stearns. 
There is no jaw, which fact renders still more doubtful the presence of one 
in Onchidella borealis as published by me in Terr. Moll. U. S., V. 178. 
The lingual dentition is of the same type as that of O. borealis (1. c.). The 
upper margin of the base of attachment is still more prolonged in O. Carpenteri. 
Aonites Whitneyi, Newcoms. | 
On p. 432 of Terr. Moll. of United States, Vol. V., will be found a descrip- 
tion of the dentition of this species, which is figured here (Pl. I. Fig. 1) by 
showing a central with its adjacent lateral and one marginal tooth. 
Zonites subplanus, Binney. 
At the same locality where Miss Law found Vitrinizonites latissimus (q. v.) 
she found several specimens of Zonites subplanus, a dark, almost black variety. 
As would be anticipated, the species has the same dentition as Zonites inor- 
natus, to which it is nearly allied. 
Janulus stephanophora, Dersx. 
Madeira. Dr. Hillebrand to Dr. Newcomb. 
Jaw strongly arched, ends pointed, cutting margin with a sharp, greatly pro-— 
duced median projection. 
Lingual membrane not observed. 
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