THVSANURAj MALtOPHAtJA. 
447 
which are noticed below. The greater ]part of this paper is occupied by an 
elaborate outline of the anatomy and classification of the creatures, and de- 
tails on experiments undertaken with a view of testing Bourlet’s statements 
as to the reproduction of lost parts. His experiments were chieflj'’ made 
upon the antennae ; and he arrives at the conclusion that, although injuries 
to these organs are repaired, still a mutilated antenna never regains the 
proper number of joints, though the others become increased in length. With 
regard to the respiratory system, he adheres to his original statement that 
there are onl}'^ two spiracles in Smynthurus, and that these are situated on the 
head, in opposition to the statement of Nicolet, who professed to have ob- 
served a scries of abdominal spiracles, and to that of Von Olfers, who could 
find only one pair, and these thoracic. The muscular system is minutely 
detailed and explained by beautifully executed illustrations on the two plates. 
His remarks on the classification of Thysanura are of great value. After re- 
viewing the position assigned to them by various writers, and considering 
their external and internal anatomy, and the absence of metamorphoses, he 
arrives at the conclusion that, aliliough more nearly allied to the Imccta 
than to the Crustacea or Arachnida, ho cannot regard them as Orthoptera or 
Ncui'optera, or even as true insects. The Ilecorder, without venturing to 
approve this opinion in its fullest significance, commends it to the notice of 
those entomologists who, by including them in Ncuroptera or Orthoptera, 
help to intensify an alreadj^ existing chaos of discordant forms. 
MTntiiie, M. J. Micr. Soc. iii. pp. 1-5, pi. xxxvii., enters into a minute 
microscopical examination of the scales of various species, and gives magni- 
fied drawings in illustration of his subject. He arrives at the conclusion 
that the scales are regularly corrugated as in Lepidoptera, and that there is 
no bead-like structure between the membranes, as has been suggested. 
Beck, 1. c. iv. pp. 252, 253, follows upon the same subject, and asserts that 
the two surfaces are dissimilar, the upper being nearly flat, while the under 
is furnished with longitudinal ribs. 
Beckia, g. n., Lubbock, 1. c. p. 279. Intermediate between Lepidocyrtus 
2 irA Begeeria, Body scaly; antennse 4-jointed; thorax not projecting over 
head ; abdominal segments unequal. Type B. argentea, sp. n,, England. 
Seira, g. n., Lubbock, 1. c. Body scaly ; antennae 4-jointed, terminal 
segment not ringed ; eyes on a dark patch ; thorax not projecting over the 
head ; abdominal segments unequal. In this are included JDcgeeria domes- 
tica, Nicolet, and a new species. 
Isotoma grisea, Sp. n., Lubbock, 1. c. p. 278, England. 
Seira huskii, sp. n., Lubbock, 1. c. p. 280, England. 
Campodea americana, sp. n., Packard, P. Bost. Soc. xiii. p. 409, Massa- 
chusetts. 
Mallophaga. 
Packard (Am. Nat. 1870, pp. 83-99) gives a well-written semipopular 
account of the habits of lice (including Anoplurd) with woodcuts, and a plate 
of well-executed figures. He also describes and figures several new species, 
noticed below. 
Rudow (Zeits. gesamm. Naturw. 1870, i. pp. 272-302) continues his re- 
searches upon these parasites. The greater part of his paper is devoted to an 
account of the bibliography, anatomy, and modes of life. Although chiefly 
