282 
Notes. 
[April, 
Thus always resting on a triangle, formed by the front and hind 
foot of one side and the middle foot of the opposite side. In 
the Arachnides, which have four pairs of legs, the order of 
movement is — 
1—5 
6 — 2 
3—7 
8—4 
A species of Curculio ( Phylonomus punctatus ) is committing 
great ravages in the clover-fields of Lombardy. 
New enemies of the vine have been recently recognised 
Phona uvicola near Narbonne, and Cladosporum viticolum and 
Peranospora viticola in North America. 
A Biological Curiosity— l open the book at page 184,* and I 
read : — “ On placing a decapitated frog at the bottom of a vessel 
filled with water, the animal rises to the surface and keeps itself 
there, with its head in the air. If the frog is placed in the. same 
vessel, under an inverted jar filled with water, it behaves in the 
same manner .” — Revue Internationales des Sciences Biologiques, 
3e Annee, p. 187. 
According to Dr. Cohn, Prof. Virchow, and Dr. Almgvist, the 
colour-sense in uncivilised nations — such as the Nubians, Lapps, 
and Tschutksches— is very well developed, though Aey may be 
deficient in words to express the different shades. This is fur- 
ther proof of the incorreaness of the view put forward by 
Magnus, Gladstone, and Geiger, that a lack of accurate colour- 
names indicates the want of accurate colour-perception. 
Mr. L. F. Ward (“American Naturalist”) contends that her- 
maphroditism is a thraldom, necessary at the outset, from which 
all living things are seeking to escape. The animal kingdom 
has for the most part thrown off this yoke, and the vegetable 
world looks to inserts as its liberators. 
E. L. Ellicott, in the same journal, has observed hundreds of 
snakes (Eutcenia sirtalis) heaped together in a mass. On another 
occasion he noticed “ a ball of black snakes (Bascamon con- 
strictor) rolling slowly down a hill-side.” 
[We have heard rumours of mass-meetings of snakes taking 
place in various parts of Eastern Europe ; but we had never the 
good fortune to meet with such a case, and our informants were 
not the most trustworthy.— Ed. J. S.] 
A Strange Psychological Theory. — At the last Congress of 
German Naturalists and Physicians a certain Prof. Jager, amidst 
the laughter of the assembly, propounded the theory that the 
* H. Milne-Edwards, Le<?ons sur la Physlologie et l’Anatomie, comparee 
de I’Homme et dee Animaux, vol. xiii., p. 184, line 8. 
