PLESIOSAURIA RHYNCHOCEPHALIA. 
Rept. 31 
Chelyclra rossignoni , Bocourt : note by Werner, Verh. Ges. Wien, xlvi, 
p. 344. 
Toxoclielys latiremis , Cope (foss.) : description and figure of the skull 
by O. P. Hay, Publ. Field Col. Mus. i, p. 101, pis. xiv & xv. The 
genus Toxoclielys is regarded as the type of a family intermediate 
between Chelydridce and Chelonidce. 
Archelon , n. g., a connecting form between the Dermochelyidce and the 
Chelonidce. A. ischyros , n. sp. (foss.), G. R. Wieland, Ainer. J. Sci. 
(4) ii, p. 399, figg., pi. vi, Cretaceous, South Dakota. 
Dermochelys coriacca , L. : on a specimen from the Adriatic ; B. KosiO, 
Glasnik Naravosl. druzt. viii, p. 117. On the digestive tract and 
food ; Vaillant, C.R. Ac. Sci. cxxiii, p. 654. 
PLESIOSAURIA. 
G. A. Boulenger, Tr. Zool. Soc. London, xiv, p. 8, proposes the follow- 
ing classification, and defines the Suborders and Families: — 
I. Mesosauria. 
1. Mesosauridce. 
II. Notiiosauria. 
1. Lariosauridce ; 2. Nothosauridce. 
III. Sauropterygia. 
1. Pliosauridce ; 2. Plesiosaur idee ; 3. Elasmosauridce. 
W. Dames monographs the Plesiosaurs of the South German Lias ; 
Abh. Ak. Berlin, 1895, No. 2, 83 pp., figg., 3 pis. 
On the structure of the Plesiosaurian skull, with figure of Plesiosaurus 
macrocephalus , Buckl. ; C. W. Andrews, Quart. J. Geol. Soc. lii, 
pp. 246-253, pi. ix. 
Plesiosaurus degenhardti, Koken (foss.) : further notes and figures by 
Koken, Pal. Abh. (2) iii, p. 122, pis. xiii & xiv. P. nothosauroidcs, 
p. 12, figg., guilelmi-imperatoris , p. 16, pis. i-iii, and havaricus , p. 68, 
pi. v, n. spp., Dames, t. c. Lias, South Germany. 
Cryptoclidus oxoniensis , Phillips : notes on the pelvis ; C. W. Andrews, 
Geol. Mag. (2) Dec. iv, iii, p. 145, figg. 
Lariosaurus halsami , Curioni : description and figure of a small specimen 
from Perledo, apparently referable to this species ; Boulenger, 
Tr. Zool. Soc. London, xiv, p. 1, figg., pi. i. 
THECODONTIA. 
Stegomus arcuatus , n. g. & sp., for dermal armour allied to Belodon, from 
the Triassic Sandstone of New Haven, Conn. ; Marsh, Amer. J. Sci. 
(4) ii, p. 59, pi. i. 
AOROSAURIA. 
W. Dames, Sitzb. Ak. Berl. 1896, pp. 1107-1125, pi. vii, contributes to 
our knowledge of this extinct group of Reptiles. 
RHYNCHOCEPHALIA. 
On the minute structure of the skin of Sphenodon ; G. Osawa, Arch. 
mikr. Anat. xlvii, pp. 570-583, pi. xxix. 
Naosaurus mirabilis , n. sp. (foss.), A.Fritsch, SB. Bohmisch. Ges. 1895, 
No. lii, p. 2, fig., Permian, Bohemia. 
