74 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
eggs are laid on the flower, and the asclepiad gives board and lodging 
to the caterpillar. The butterfly appears to live entirely on the nectar 
of this flower, and when settled upon it, protects it from enemies ; for 
the wings of the butterfly, when spread out, resemble in colour the 
umbel in bloom, and, when folded, the umbel in hud. The butterfly 
also assists in pollination by dragging out the pollinia. 
The author further alludes to a similar relationship between ants 
and a species of Cecropia. 
Entomology of the Oak.* — Mr. A. T. Gillanders notes that Kalten- 
bach catalogues 537 species of insects breeding on the oak, and S. L. 
Mosley mentions 272 ; these differ widely in the degree of damage 
which they cause. The author furnishes notes on some of these forms, 
and briefly discusses galls and alternation of generations. 
j8. Myriopoda. 
Studies on Myriopods. — Dr. C. Yerhoeff continues indefatigable in 
his study of Myriopods. He takes a survey f of the more precisely known 
European genera of Chordeumidae. Then follows J an account of the 
Polydesmidee of Bosnia, Herzegovina, and Dalmatia. A third paper[§ 
deals with the Chordeumidas and Lysiopetalidae of the same region. The 
list of new forms mounts up steadily. 
5. Arachnida. 
Acari from Franz- Josef Archipelago. ||— Mr. A. D. Michael reports 
on five Acari collected by Mr. Fisher at Cape Flora, Northbrook Island, 
Franz- Josef Archipelago, the most northern Acari yet obtained. There 
is no hint of a specialised local fauna. The five are : — the common 
Glycipliagus domesticus (found far away from the camp) ; Oribata setosa 
(common even in S. Europe) ; 0. Fisheri sp. n. (closely allied to 0. antarc - 
tied) ; Erythrseus Harmsworthi sp. n. ; and JRhagidia gelosa. 
Parasites of Ants. IF — Herr E. Wasmann adds some additional notes 
to his former communication on the mites found in the nests of 
ants. He asserts that the Hypopus found on Formica sanguinea , and 
formerly ascribed to Tyroglyplius Krameri, really belongs to T. Was- 
manni. This last species is not only a common parasite of the ant 
named, but occurs also on other ants, such as Camponotus ligniperdus and 
Lasius fuliginosus. The parasites do not seem to feed upon the host, but 
form surface crusts, which injure especially the delicate sense-organs, 
e.g. of the antennae, and ultimately cause death. The occurrence of 
other mites in other ants’ nests is also described. 
Sheep-Ticks and Louping-Ill.** — Messrs. A. Meek and R. Greig 
Smith report on some experiments, which corroborate those made by 
Williams, as regards the propagation of louping-ill by means of the 
sheep-tick. The disease itself is doubtless bacterial, but practically 
the tick is responsible. 
* Trans. Manchester Micr. Soc., 1896 (1897), pp. 78-88. 
f Arch. Naturges., lxiii. (1897) pp. 129-38. 
+ Tom. cit., pp. 139-46 (1 pi. and 1 fig.). § Tom. cit., pp. 147-56 (1 pi.). 
H Journ. Linn. Soc. (Zooh), xxvi. (1897) pp. 355-7 (1 pi.). 
1 Zool. Anzeig., xx. (1897) pp. 346-50. 
** Veterinarian, Ixx. (1897) pp. 698-709. 
