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gentleman. Mr. Boulenger had determined these Tortoises as being Spengler’s 
Terrapin (Nicoria Spengler). — Mr. O. Thomas, F.Z.S., exhibited and 
made remarks on a rare Antelope (Nanotragus livingstonianus) from Northern 
Zululand. — Dr. Forsyth-Major, C.M.Z.S., exhibited and made remarks 
on a tooth of Orycteropus from the Upper Miocene of Maragha, Persia, which 
he referred to O. Gaudryi, of the Upper Miocene of Samos. Drawings of 
the remains of the latter were exhibited, as well as a photograph of a femur 
of a Struthious bird from the same deposit in Samos. The habitats of Stru- 
thio and Orycteropus were thus shown to have been essentially identical in 
past times, as in the present. Therefore the general conclusions to be drawn 
from their geographical distribution would apply equally to both. — Mr. 
Oldfield Thomas made some suggestions for the more definite use of the 
word »typec and its compounds, as denoting specimens of a greater or less 
degree of authenticity. — Mr. P. L. Sclater, F.R.S., pointed out the 
characters of a new African Monkey of the genus Cercopithecus; and took 
the opportunity of giving a list of the species of this genus known to him, 
altogether 31 in number, together with remarks on their exact localities. — 
Prof. F. Jeffrey Bell, M.A., F.Z.S., read a paper on Odonfaster and the 
allied and synonymous genera of the Asteroidea. — Mr. A. D. Michael 
read a paper upon a new species (and genus) of Acarus found in Cornwall. 
The creature in question, which it was proposed to call Lentungula algivo- 
rans, was found in some quantity on a green alga (Cladophora fracta) near 
the Land’s End. It was a minute creature belonging to the family Tyrogly- 
phidae, the remarkable feature about it being that, whereas the two hind 
pairs of legs were terminated by a hard and powerful single claw (which claw 
sprang from the end of the tarsus), the two front pairs had the tarsus itself 
hardened and curved strongly downward, forming clinging- and walking- 
organs; while from the side of the tarsus sprang a long pedunele, flexible in 
all directions at the will of the creature, and bearing an exceedingly minute 
claw. This apparatus was not used in climbing, but had become wholly tac- 
tile. Such an arrangement was previously unknown in the Acarina. — Prof. 
Howes described some abnormal vertebrae of certain Ranidae (Rana cates- 
biana, R. esculenta, and R. macrodon), in which the so-called »atlas« pos- 
sessed transverse processes and trans-atlantal nerves. Prof. Howes discussed 
the bearings of these specimens on the morphology of the parts, deducing 
the argument that the first vertebra of the Amphibia is probably to be re- 
garded as a representative of at least two vertebrae, of which the formative 
blastema has become merged in the occiput in the Amniota. The author 
also described a stage in the development of the urostyle of Pelobates, and 
showed that, in this Batrachian, there is a provisional inversion in the order 
of development of the parts of the urostyle and precoccygeal vertebrae. He 
also described a reduced hind limb of Salamandra maculosa, in which the 
reduction and fusion of the parts remaining realized the condition normal 
for the Urodele limb with numerically reduced digits. — P. L. Sclater, 
Secretary. 
Druck von Breitkopf & Hartel in Leipzig. 
