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Mr. Schwarz also exhibited a species of the family Monommide collected on Key 
West and at Biscayne Bay, Florida, and stated that after a careful study he has come 
to the conclusion that it is identical with dAspathinus ovatus Champion, recently 
described, from Central America, which adds a new genus to our fauna. Discussed 
by Messrs. Marlatt, Howard, Mann, and Schwarz. 
The Secretary read a note by Mr. William D. Richardson, of Fredericksburg, Va., 
corresponding member ef the society, on the life-history of Lema sayi. The food-plant 
of this species is Commelyna virginica; the eggs are laid singly on the leaves, and 
the larvae usually bore in the flower stalks, ejecting their feces from the entrance 
hole of the burrow. Discussed by Mr Schwarz. 
Dr. Marx exhibited two remarkable spiders occurring in our fauna: (1) arepresent- 
ative of the South American genus Nops, characterized by having but two eyes; (2) 
a puzzling species, the affinities of which he pointed out. It resembles an Epeira, 
but is altogether different in characters. 
Mr. Howard read a paper entitled ‘‘Unmotherly Aphids” recounting the conjoint 
observations of Messrs. Howard, Chittenden and Marlatt of the curious fact of the 
deposition of the winter eggs of Nectarophora liriodendri in numbers on the pupal shells 
of Cicada which were attached to the trunk of a tree near the Agricultural Depart- 
ment building. Various interesting comments were made on this incident and the 
communication provoked considerable discussion. 
Mr. Schwarz read a paper on the time of flight in Scarabeia beetles, in which he 
related an observation made last June by Mr. H. G. Hubbard and himself concern- 
ing an undescribed species of Lachnosterna which flies before sunset in the Alpine 
regions of Utah. He added remarks on the flying habits of other species of Lachno- 
sterna and of Scarabezid beetles in general. It appears that in this family the unity 
in habit regarding the time of flight is generally maintained so far as genera are con- 
cerned, and that there are comparatively few exceptions to this rule. 
Mr. Howard read a paper on the ‘‘ Habits of Melittobia,” suggested by Mr. Ash- 
mead’s communication at the preceding meeting. He gave a comprehensive review 
of the literature, showing all of the hosts of this genus of parasites, proving that 
it is both parasitic and hyperparasitic. He added an account of the rearing of 
M., pelopei Ashm., from dipterous puparia found in Pelopzus cells by Mr. A. N. Cau- 
dell. Discussed by Mr. Ashmead. 
Mr. Banks read a paper entitled ‘‘A New Genus of Phalangiide from North 
America,” in which, under the name Caddo nov. gen. agilis n. sp., he described a 
peculiar Phalangiid collected in woods near the seashore on Long Island. Figures 
representing the peculiar features of the insect were exhibited. Discussed by 
Messrs. Gill, Stiles, Fox and others. 
Dr. Marx gave some remarks on the geographical distribution of spiders, and — 
stated that the Drassidz, formerly supposed to be boreal in habitat, were now found 
to occur in the tropics in abundance, and that, in fact, we have not a single family 
that is entirely northern in range. In the Attide, however, certain genera may 
prove to be altogether boreal, but the family is not well worked up. 
December 3, 1891.—Under short notes Mr. Howard recorded the capturing on the 
window sill of his residence, November 16 of an active female of Mantis (Stagmo- 
mantis) carolina Burm., this giving a record of occurrence later than that previously 
recorded by Mr. Lugger, viz., November 11. 
Dr. Marx read a paper entitled ‘‘ Life History of Thelyphonus giganteus Lucas,” in 
which, after dwelling on the importance of even fragmentary records of the his- 
tory of little known or rare animals, he gave an account of his having kept in con- 
finement the young of this Arachnid for over a year. The specimen came from 
Florida to Prof. Riley, and was, when received, in its first stage and newly hatched. 
It fed readily on roaches but refused flies. A description was given of the first 
stage, and also after the first skin had been cast, which did not occur for over 
a year. 
