GASTROPODA (DOCOGLOSSA) . 
Moll. 57 
CHITONIDiE. 
B. Haller gives an elaborate anatomy of two species of Chitonidce , 
Chiton siculus (Gray) and [A canthochoetes] fascicularis (L\), describing 
more particularly the nervous system, the intestinal tract and its glands 
(of which he calls one the “ sugar gland,” because its secretion changes 
amylon into sugar ; this is the “ pharyngeal sac ” of former authors), the 
renal organ, the sexual organs, and tho blood vessels. He dwells on the 
relations of the body cavity to the internal organs ; the intestine is sup- 
ported by a mesenterium only in its last part, the genital gland is fixed 
by an anterior and posterior ligament, and the author comes to the con- 
clusion that the body cavity is originally formed by right and left parts, 
into which the organs have been invaginated ; the pericardium and the 
ligaments of the genital gland being formed originally by the epithelial 
layer of the body cavity. As to the relations of the Chitonidce to Neo- 
menia, the author thinks that both are collateral groups, the arrange- 
ment of the nervous ganglions being more primitive in the Chitonidce 
than in Neomenia, though many other points of the organization are 
reversed. Arb. z. Inst. Wien, iv. 3, pp. 323-395 (1-74), with 7 pis. 
A. Sedgwick states that in Chiton discrepans (Leach), and cancellatus 
(Leach) the kidney is a paired, unsegmented, reflexed gland with paired 
openings into the pallial groove and pericardium, and agreeing closely 
with that of Anodontci ; but it is beset by a number of branched globular 
coeca, lying in the hinder part of the body cavity, and forming a mass 
of tubes apparently interlacing with those of the opposite side ; this 
portion has been seen and described by Yon Ihering as an unpaired 
kidney opening to the exterior by a median pore ; the generative gland is 
unpaired and dorsal, its ducts paired and opening into the pallial groove 
between the 13th and 14th gill. P. R. Soc. xxxiii. pp. 121-127, with 2 
woodcuts; abstract in J. R. Micr. Soc. (2) ii. pp. 179 & 180. 
Kowalewsky’s paper on the development of Chiton , Zool. Anz. 1882, 
pp. 307-310; see General Subject. 
All the generic divisions recognized by the late P. P. Carpenter & 
W. H. Dali, recent and fossil, are brought together and their chief cha- 
racteristics tabulated, and many generic names proposed by former authors 
are restricted or better characterized ; Dall, P. U. S. Nat. Mus. iv. 
pp. 279-291. The following observations occur: — 
Leptoplax, Callistoplax , and Angasia (Carpenter, 1879) characterized, 
p. 286. 
Ceratozona, pp. 283 & 286, new name for Ceratophorus (Carp., nec 
Diesing). 
Pallochilon, pp. 283 & 287, now namo for Ilemphillia (Carp., ncc 
Binney). 
Fanncttia , pp. 284 & 287, new namo for Fannia (Gray, nec Desvoidy). 
Lucilina, pp. 284 & 287, new name for Lucia (Gould, ncc Swainson). 
Middendorfia (Carp. MS.), pp. 284 & 287, new name for Dawsonia 
(Carp., preoccupied). 
Deanella , ibid., new name for Beania (Carp., nec Johnstone). 
