450 General Notes. 
GroLogicaL News. — Permian, Trias, Erc. — La Mar 
in his famous “ Voyage in Sardinia,” states that the Permisi 
Triassic and even Liassic rocks seem to be entirely lacking in 
Sardinia. True Triassic beds, however, have been found in the 
southwest near Iglesias, while in the north of the island, near 
Nurra, Permian and Triassic strata occur. Descriptions of these 
rocks, with lists of their characteristic fossils, may be found in 
Bulletin XII. (2d series, vol. 11) and Bulletin XV. (2d series, 
vol. 5) of the Comitato geologico d’ Italia. 
JURASSIC. — The result of the researches of M. L. Dollo into 
— menace of the Iguanodontide is to prove that Iguanodon 
nnot be descended from Hypsilophodon or vice versa, but that 
dey are the types of two utterly distinct families 
According to Dr. J. V. Deichmiiller, the sabi het of specimens 
from the lithographic slates now in the Dresden Museum reaches 
1680, comprising 114 genera and 193 species, and including 48 
species of fishes, 53 of insects, 48 of crustacea, and 21 of cephalo- 
poda. Among the insects nine forms belong to the Orthoptera, 
seventeen, besides several still unidentified, to the Neuroptera, six 
to the Hemiptera, and eighteen to the Coleoptera. Of the Neu- 
roptera two specimens only are Neuroptera vera, while the Termi- 
tina are represented by two, and the Ephemeride by one species. 
The remaining pseudo-neuropterous forms, comprising more than 
one-third of all the insect specimens, and nearly 95 per cent. of the 
neuropterous remains, belong to the Odonata. In his “Die 
Insecten aus dem _ lithographischen Schiefer im Dresdener 
Museum ” (1886) Dr. Deichmiiller not only gives fuller descrip- 
tions of previously known forms, but describes two new species 
of Locustide, one of Notonectidee and one each of Carabide, 
pay Pes, Scarabeide, Buprestidæ, Elateride, Pyrrochroide, 
and Chrysomelide. 
Canozoic.— M. L. Dollo, in his “ Premiére note sur les 
Chéloniens oligoctnes et néogenes de La Belgique,” reviews the 
numerous remains of turtles belonging to the group Athece, of 
which Sphargis is the only existing representative, that has been 
found in the upper tertiary deposits of Belgium. Remains oe 
the “ Rupelian ” clay (middle oligocene) were described by P 
Van Beneden in 1883, under the title of Sphargis rupeliensis 
while others from the “ Bolderien ” were by the same S alæontologist 
‘named Macrochelys scaldii. The discovery of additional material 
has enabled M. Dollo to ascertain that the Sphargis rupeli 
M. Van Beneden differs from the recent form by the presence of 
a continuous bony ventral armor, formed of a mosaic of 8 
pee. while S. coriacea has only longitudinal series 0 
tubercles; by the slighter convexity of the carapace ; by the 
