Miscetlaneous. 307 
British Isles, are very common in the gulf of Marseilles. They 
live among the seaweeds of the shore, and even resist the im- 
pure waters of the harbour of Arenc. 
This great geographical extension is still more surprising in re- 
spect of the freshwater Nematoids. In the pools of La Torse, in the 
neighbourhood of Aix in Provence, I obtained Dorylaimus stagnalis, 
Duj., and Trilobus pellucidus, Bast., of the English ponds. Probably 
M. Villot will find in Brittany most of the species indicated in the 
Mediterranean. The imperfection of some of Bastian’s figures does 
not enable me, in the case of several worms, to propose an iden- 
tification which nevertheless may be foreseen.—Comptes Rendus, 
February 22, 1875, p. 499. 
On anew Order of Hocene Mammals. By Prof. O. C. Marsa. 
At the last meeting of the Connecticut Academy, Feb. 17th, 
Prof. O. C. Marsh made a communication on a new order of Eocene 
mammals, for which he proposed the name “ Tillodontia.” These 
animals are among the most remarkable yet discovered in American 
strata, and seem to combine characters of several distinct groups, 
viz. Carnivores, Ungulates, and Rodents. In Tvllotheriwm, Marsh, 
the type of the order, the skull has the same general form as in the 
bears, but in its structure resembles that of Ungulates. The molar 
teeth are of the Ungulate type; the canines are small; and in each 
jaw there is a pair of large scalpriform incisors faced with enamel, 
and growing from persistent pulps, asin Rodents. The adult denti- 
tion is as follows :—incisors 2; canines +; premolars 3 ; molars 3. 
The articulation of the lower jaw with the skull corresponds to 
that in Ungulates. The posterior nares open behind the last upper 
molars. The brain was small, and somewhat convoluted. The 
skeleton most resembles that of Carnivores, especially the Ursidee ; 
but the scaphoid and lunar bones are not united, and there is a third 
trochanter on the femur, The radius and ulna, and the tibia and’ 
fibula are distinct. The feet are plantigrade; and each had five 
digits, all terminated with long, compressed, and pointed ungual 
phalanges, somewhat similar to those in the bears. The other 
genera of this order are less known; but all apparently had the 
same general characters. There are two distinct families’ :—7v/lo- 
theride, in which the large incisors grew from persistent pulps, 
while the molars have roots; and the Stylinodontide, in which all 
the teeth are rootless. Some of the animals of this group were as 
large as a tapir. With Hyraw, or the Toxodontia, the present order 
appears to have no near affinities.—Silliman’s American Journal, 
March 1875. ; 
On the Mediterranean Species of the Genus Eusyllis. 
By M. A. F. Marron. 
Y have lately indicated, under the name of Lusyllis lamélligera; 
an annelide of the Gulf of Marseilles, belonging to the remarkable 
