1884.) Proceedings of Scientific Societies. 335 
contained some undeveloped pods of Dalea alopecuroides, the 
refuse of the harvesting of these creatures. 
A paper entitled “ Notes on American Fishes Preserved in the 
Museums of Berlin, London, Paris and Copenhagen,” by D. S, 
Jordan, was presented for publication, as also one on “ Staining 
with Hematoxylon,” by Dr. C. L. Mitchell. 
Nov. 29.—Rev. Dr. McCook exhibited and described the tent 
and egg-nest of Attus opifex, a Californian saltigrade spider. Dr. 
McCook also reported the discovery on the Wissahickon of 
Psocus expunctatus, a web-spinning neuropterous insect, not before 
known to occur in this country. Dr. Horn exhibited specimens 
of the curious beetle Platypsylla castoris, parasitic upon the beaver, 
These specimens came from European beavers living at the mouth 
of the Rhone, but the species was first described from examples 
taken from an American beaver living at Amsterdam. Mr. 
Cresson described some Aztec bells, considered the probable mode 
of their manufacture, and compared them with Peruvian, Assyrian 
and Egyptian forms, 
Dec. 6.—Professor Lewis exhibited some gold nuggets from 
Montgomery county, N.C. Professor Cope placed on record a 
new genus of mammals supposed to be Lemuroid from the Puer- 
co Eocene. The typical species is Zndrodon malare. 
December 12.—Rev. Dr. McCock described the manner in 
which the queen ant starts a formicary, as illustrated by the wing- 
less queens o Camponotus pennsylvanicus. These had walled 
themselves in with small particles of bark. Professor Heilprin 
gave the results of his studies upon the tertiary and cretaceous of 
Atlantic and Southern States. The three lowest Cretaceous 
posits belong to the Senonian, and the upper one to the Mzs- 
g group. The boundary of the tertiary was traced through 
Rinia and the Carolinas. Patches of eocene occur along the 
rig of North and South Carolina. Professor Cope exhibited 
€ skull of Aphelops Jossiger from the Loup Fork strata of Sand 
creek, an affluent of the San Francisco river, New Mexico. 
s graphs of an Aphelops indistinguishable from this species 
— ed the existence of the Loup Fork beds near the City of 
co r. Wortman referred to similar remains in Florida,- 
ting the presence of the same beds. Professor Lewis an- 
a that the angles of a mineral described by him at a pre- 
Ti meeting as new, were identical with those of Sarcolite. 
Leidy size of the crystals found in Canada is remarkable. Dr. 
Stated that he had lea A sticest pp d fresh-water ceph- 
in a mil] worm Manayunkia, recently described by him, was found 
-Pond some times overflowed by the ocean, so that, after 
ie may be marine. Dr. A. J. Parker called attention 
im in ae, Prove a new method of reproduction observed by 
these j ‘phileptis fasciola. The lengthened extremity of one of 
infusorians broke up into little masses of protoplasm having 
