380 
ZOOLOGICAL LITEKATUlUi. 
Oa&tropacha pini. Kiinstlei* reports on this species. Verb, zool.-bot. Ges. 
in Wien, xvii. pp. 956-968. 
Qoubeau (Insectea nuisibles, pp. 111-110) notices and describes Cnetho- 
campa processionea and pityocampa as injurious on account of the irritation 
produced in the skin by the hairs of their larvae. He also describes Calosoma 
sycophanta as one of the chief enemies of these larvae. 
Gueiiin-Meneville, notes on sericiculture. Rev. et Mag. de Zool. 1867, 
pp. 219-224, 305-312, 340-352, 883-384, 413-416, and 456-458. 
M. Giuaud communicated to the French Entomological Society a series of 
notes on sericicultiu’e (Ann. Soc. Ent. Fr. 4® ser. vii. pp. 381-386) relating to 
the results obtained at Brives by Mdlle. de Lavergne, and at the Jardin d’Ac- 
climatation. The species referred to are Sericaria mori^ Attacus arrindia, A. 
Cynthia, A. yamamai) A. mylitta^ and A, aurota. Girard also notices the epi- 
demic observed in larvae of Lepidoptera in France in 1867. 
Guerin-Meneville remarks upon various species of SiUcworms (Bull. Soc. 
Ent. Fr. 1867, pp. xxxi-xxxii). The species referred to are B. mylitta and 
selme and a new species of Lasiocampa from Senegal (vide infra). Guerin 
also read a note from Chavannes (1. c. pp. xxxii-xxxiv) in support of his no- 
tion that the vibratile corpuscles in the diseased Silkworms are the nucleoli 
of the blood-corpuscles vitiated by the presence of uric and hippuric acids.” 
This view is disputed by Gervais, Kiinckel, and Laboulbene. 
Vlacovicii has published an elaborate memoir on the Silkworm-disease, 
and especially oh the oscillating corpuscles occurring in the affected indi- 
viduals. Atti Istit. Venoto, xii. pp. 139-170 and 269-298. 
Balbiani remarks (Bull. Soc. Ent. Fr.'1867, p. xxviii) upon the Silkworm- 
disease and the demonstration of its infectious nature. Caterpillars of Gas- 
tropacha neustria were infected by feeding on leaves which had been moistened 
with water containing crushed diseased Silkworms, and Clothes-moths were 
similarly affected when their food was dusted over with the same insects 
powdered. 
Balbiani’s experiments on the infectious nature of muscardine are noticed 
by M^Lachlan, Proc. Ent. Soc. 1867, p. cv. 
Balbiani gives an account of his observations on the corpuscles present in 
diseased Silkworms in Bull. Soc. Ent. Fr. 1867, p. xix. 
J. Mitchell, in reference to a statement made by Hutton that the two silk 
fibres produced from the spinning-tubes of Silkworms are twisted together, 
states that, on the contrary, every silk-fibre in the cocoon consists of two 
threads laid side by side and united by a glutinous material. In bleached 
spun silk the filaments arc single, the uniting material having been removed 
in the process of manufacture. The author also remarks on the form of the 
silk fibre in difierent species. Trans. Ent. Soc. 3rd ser. ii. pp. 443-444. 
F. Bronke communicates (Rev. et Mag. de Zool. 1867, pp. 123-128) a note 
on the disease of the common Silkworm, in which he dwells especially on the 
mineral constituents contained in the mulberry leaves on which these animals 
are fed, and suggests that the exhaustion of these mineral constituents in the 
soil, and their consequent diminution in the leaves of the mulberry-trees, may 
be the cause of the unheaKhy condition of the Silkworms, Ho recommends 
that experiments should bo made with various manures, and indicates the 
system to be followed according to the morbid symptoms presented by the 
Silkworms. 
