ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
591 
Arthropoda. 
Regeneration in Arthropods.* — M. Edmond Bordage notes that 
the re-growth of appendages takes place in a spiral in Phasmidae aud 
Blattidae (Bordage, Brindley), in shore-crabs and hermit-crabs (Goodsir), 
and in spiders. In the lobster it is rectilinear as regards the limbs, but 
spiral in the antennae until the first moult after mutilation. The dif- 
ference is believed to depend on whether the rudiment of the regene- 
rating appendage is flaccid or turgid from the commencement of its new 
formation. In Phasmidae a limb regene: ated after autotomy grows 
spirally, but after artificial section the regeneration is rectilinear. 
Arthropods from Chili.t — Dr. Filippo Silvestri records the discovery 
of Koenenia mirabilis from Valparaiso. This Arachnid has previously 
been recorded only from the region round the Mediterranean, but the 
author considers that it is indigenous and not naturalised in Chili. In 
the same locality he found not a few' other European Arthropods, such 
as Campodea staphylinus, Pauropus huxleyi , &c. The paper includes a 
description of Peripatoides blainvillei (Blanchard). This species is 
undoubtedly not a member of the genus Peripatus s. str., and it is 
remarkable that a form from Southern Chili should belong to the 
Australian genus Peripatoides , while the type genus is common in 
Central America, Ecuador, aud as far as Bolivia. 
a. Insscta. 
Mosquitos and Malaria.J — Prof. B. Grassi has been communicating 
note af.er note on the role of mosquitos in spreading malaria, and in the 
paper before us by Grassi, A. Bignami, and G. Bastianelli, it is stated 
that all the species of Anopheles with which they have experimented have 
shown themselves capable of propagating malaria. The only Italian 
species in regard to which this has not been shown is A. pseudopictus, of 
which, and of Culex, &c., we shall doubtless soon hear more. 
Larval Stage of Hypoderma bovis.§ — P. Koorevaar discusses the 
occurrence of the larvae in the spinal canal and in the wall of the 
oesophagus, and the difficulty of coming to a clear understanding of the 
migrations within the body of the ox. Some which were introduced 
under the skin of a dog w 7 andered about into various places agreeing 
with those in which they are found in cattle. This discovery, taken in 
connection with the fact that the introduction of the larvae per os had no 
result, leads the author to the opinion that the young larvae of Hypo- 
derma bovis at first pass beneath the skin, and then betake themselves to 
the spinal canal and other places to return later into the subcutis, where 
they undergo further development under well-known conditions. 
Female Genital Tract of Pupipara.|| — Dr. H. S. Pratt has studied 
this in Melophagus ovinus, the larva of which was the subject of a 
previous investigation.^ The ovary conforms to the Dipterous type — 
* Comptes Rendus, cxxix. (1899) pc. 455-7. 
t Zool. Anzeig., xxii. (1899) pp. 369-71. 
X Atti R. Accad. Lincei (Rend.), viii. (1899) pp. 431-8. Cf. this Journal, ante, 
p. 155. 
§ Ann. and Mag. Nat. Hist., iv. (1899) pp. 69-73, translated from Tijdsclir. Neder- 
land. Dierk. Ver., lS9S, pp. 29-34. 
|| Zeitschr. f. wiss. Zool., lxvi. (1898) pp. 16-12 (2 pis. and 1 fig.). 
Arch. Naturges., iiii. (1893). 
9 r 9 
