en PROCEEDINGS OF THE GHOLOGICAL SOCIETY. [Dee. 22, 
Dimensions. 
inches. 
Length of skull from pramaxillary symphysis to occipital crest 33 
From prxmaxillary symphysis to (broken) articular end of 
GymMpanic WOVE ennede-ses ene eeer eer sear sce een sees 0599259508006 eee) 
From premaxillary symphysis to posterior limit of (anterior) 
TMAVAIL TOMES 50509000920090800290000000050000000709 2000 Ioan GDEsaIEBIBS 30039 4 
From premaxillary symphysis to point of Cuvier’s large nasals 10 
From premaxillary symphysis to end of their median suture... 19 
Length of crotaphite foramen ...........-.e cesses eeeee eee eeeeneecnns 6 
Breadth of crotaphite foramen, about ..............sseeeeceeeeeeeeeee 6 
Breadth of forehead between orbits .........:..seceeeeeee icin iaeeeeaenhs i 
Breadth of snout at second tooth ............c..cecesseeseeeecneeceeeees ol 
Breadth at middle of dentary SeVies ..........ssee0e--ss sens ABeSoebO7 GO 56 
TSVASEVGHEN, Ale LaVbOVEbTAO SE WOON — s46n5000e90002507Rbd07de95090009090530300008" 10:2 
[Bree slHa Ge GOUE OUI (/DS6 7 sasoncdsonon00dn49n0405 9-4. deos3 Joana sasasase39 15 
Height OfOccipub | ~..crcccene onan ter vee ormceeetaseewes “hese leer anrmer er 73 
Length of alyeolar series (left side) ...........0.--+:cseeseere-eneereee 237 
From premaxillary symphysis to the anterior palatine foramen 19 
From premaxillary symphysis to palato-maxillary foramen ... 21 
EXPLANATION OF PLATE Ix. 
Fig. 1. Under surface of skull of Steneosaurus Manselit. 
a. Anterior palatine foramen. 
6, Premaxillary-maxillary suture. 
c. Anterior extremity of pterygo-maxillary foramen. 
d. Basisphenoid. 
2. Upper surface of skull. 
a. The triangular bones corresponding to those lettered @ a in Cuvier’s 
figure of upper surface of snout of Gavial téte 4 museau plus court. 
b. The nasals. 
c. Their anterior termination in the nostril. 
d. The orbit. 
e, Parietal crest. 
5. Nore on some Treru associated with Two Fracuernts of a Jaw 
jrom Kimuerripee Bay. By J. W. Horxs, Esq., F.R.S., F.G.8. 
Amonest many other Kimmeridge fossils which Mr. J. C. Mansel 
has intrusted to me for examination are two pieces of a long, slender 
snout, not unlike that of a long-beaked Ichthyosaurus, but too frag- 
mentary and crushed to allow of their certain identification. 
The teeth differ from those of all the fossil fish and reptiles in the 
British Museum with which I have been able to compare them. 
They are peculiar in the great development of the cementum, which 
gives the fang the appearance of being inserted in a bulbous 
sheath. The base of the tooth resembles a little bulb, from the top 
of which a slightly curved, cylindrical, conical, and polished crown 
protrudes. The average length of the teeth is nearly 53 lines (En- 
glish), of which about 3! belong to the neck and crown. The dia- 
meter of the neck and of the neighbouring part of the crown is 
about 14", while that of the bulbous fang reaches 21/", The 
crowns are dark brown, polished, and smooth, and their trans- 
verse section is circular, They are composed of a simple tubular 
