118 _ Proceedings. of Scientific Societies.’ (Jan. 1883 
worm found by him under stones at Media, Delaware county, £ 
Extremely like the common white worm, Euchytreus vermiculans, 
common in damp places, in flower-pots, under decaying leaves, i 
or in marshy meadows, it differs from that species generically 
by the possession of two rows of setapeds instead of four, 
He proposed to name it Distichopus sylvestris. The intestine 
of Distichopus contained a Monocystis (M. mitis). The En 
chytrzeus, instead of a gregarine, was infested, in different speci- 
mens, with two infusorians of the genus Anoplophrya (A. modesta 
and A. funiculus Leidy), and an undetermined Lumbricus yielded i 
a third species (A. melo Leidy). . 
May 30.—Professor Leidy called attention to the abundance of 
the ant Lasius interjectus in the neighborhood of Philadelphia. It 
is habitual with this ant to care for an Aphis and a Coccus, both of 
which it guards in flocks. -He described a particular nest under 
a flat stone, containing six distinct and closely crowded groups of j 
the pale yellowish Aphis, and five of the red Coccus. Dr. Leidy ] 
also exhibited some transparent yellowish garnets and a colorless 
brilliant of tourmaline from St. Lawrence county, N. Y. big 
June 27.—Dr. H. Allen remarked that the pterylar tracts of 
gists apnea 
deep muscles were supplied by long nerves, while the supe bal 
muscles were supplied by short nerves. In Menopoma he et 
found a branch of the ulna nerve passing into the natatorial fold 4 
of skin upon the ulnar border of the forearm. In Menopoma tt 
ulnar and musculo-spiral nerve arose from the same trunk, and 
he suggested as probable, that the deep connections of these 
nerves in the brachial plexus of man would be found to be coh 
stant, The ulnar nerve is distributed entirely to the hand andt 
muscles moving it, and is well developed in forms which lack th 
median, so that may be called the manual nerve. The muscles 
- of the forearm that are supplied by this nerve, are singularly Oo” 
stant, are.the most effective muscles in the backward movement 
of the manus in swimming and walking, and one, the feror ci 
ulnaris, makes tense that part of the bat’s wing-membraneé which 
lies between the manus and the body. i 
- July 18.—Mr. Mehan exhibited a nest of the Chaetura pela 
made of cherry twigs fastened y e 
gum was probably cherry gum, and not, as stated by Audubon, 4 
salivaceous secretion of the bird. i 
Miss Lewis said that she had, through a pipe-hole, watched 2 
chimney-swallow at work, had seen it use its bill as a trowey 
rea vait for a further secretion, and then again work at adjusting 
IC SUCKS. à D 
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