NATURAL HISTORY MISCELLANY. 59 
Mr. T. distributed specimens to many of the American "EY MeL rii 
most of whom informed him that it was new to their collections. "The 
donation this evening (Nov. 4) indicates that the species has a large area 
of distribution, ae has probably been overlooked by — gin we 
supposition that it was — the "i of some larger speci 
t the meting held December 2d, Mr. W. L. Mactier pi ationtinn 
specimen of Dolium i GE m presented by him this evening. 
T. iie ‘of this shell still remains a mystery, although it has been 
recently assigned to Japan. Mr. M. also presented a nearly perfect speci- - 
men of Voluta Junonia and remarked that it was the rarest of American 
Volutide, and was found in the Gulf of Mexico. 
Mr. Tryon referring to his remarks made at a former meeting in refuta- 
tion of Dr. Gray's opinion that Crepidula plana Say, is identical with 
C. fornicata Linn., stated that additional evidence of their non-identity 
had recently been presented by Mr. George H. Perkins, who in a recent 
paper states **that the ovi-capsules of plana are broader, shorter, and 
thinner than those of fornicata, and the ova are differently situated." 
GEOLOGY. 
FURTHER EVIDENCE OF THE AFFINITY BETWEEN THE DINOSAURIAN 
REPTILES AND Binps. — Professor Huxley Midas the evidence already 
cited by himself and others (especially Prof. E D. Cope), in favor of the 
ornithic affinities presented by the 5 ROSE and discusses at length 
the recently ascertained facts which bear upon this question, some of 
the most important of which are derived from the species described 
by him in the preceding paper under the name “ae Hypsilophodon Fozii. 
He summed up his paper by a comparison of the different elements o 
Lus pelvic arch and hinder limb in the ide eg Kris the Dinosauria 
d Birds, and maintained that the structure of the PD ic bones (espec- 
ny the form and arrangement of the ischium and pubis), the relation 
between the distal ends of. the tibia and the ne SIS (which is per- 
fectly ornithic), and the strong cnemial crest of the tibia and the direc- 
tion of its twist, furnishes additional and important evidence of the 
affinities between the Dinosauria and Birds. 
Sir Roderick Murchison, who had taken the chair, enquired as to the 
Mr 
á 
e 
habits of the Hypsilophodon. . Hulke mentioned that Mr. Fox 
several blocks Vernis X remains of a large portion of the Hypsilopho- 
on, all procured f om n band of sandstone near Cowleaze ine. 
which is longer than the femur, four long metatarsal bones, and an astra- 
galus. All the long bones are hollow. Portions of at least eight indi- 
viduals have been found in the same bed. Mr. Seeley doubted whether 
these animals should be called reptiles at all, as they seemed to h 
form a group distinct alike from reptiles, birds, and mammals, but occu- 
