26 Arachn. 
ARACHNIDA. 
Canestrini, G., & Berlese, A. Nuovi Acari. Atti Soc. Pad. viii. 
pp. 145—153, pis. xix.-xxi. [Noted in Zool. Bee. xviii. Arachn. p. 32, 
as not seen by Recorder.] 
Describes five new species — Acari parassiti, 4 species, genera Ptero- 
lichus and A lloptes ; Acari liberi, 1 species, genus Histiostoma. 
R. Canestrini, Atti Soc. Pad. vii. [1881] (quoted from Bull. Ent. 
Ital. xiii. p. 203), observes that all insects have mites, especially Coleo- 
ptera , Diptera , Orthoptera , and Hymenoptera ; but that not all these 
mites aro parasitic ; the larger number are found on the insects in an 
immature state. 
Canestrini, G., & Canestrini, R. Acari Italiani' nuovi e poco noti. 
Atti 1st. Yenet. (5) viii. pp. 913-930, pis. viii.-x. 
Thirteen species contained in several families of Acariclea are treated 
of ; a new genus of Gamasidce is characterized, and nine new species of 
various genera and families are described. 
Canestrini, R. Contribuzioni alio studio degli Acari parasiti degli 
Insetti. Atti Soc. Pad. vii. pp. 154-178, pi. xxii. [Omitted from former 
vols. of Zool. Rec.] 
Refers particularly to the insects on which certain Acari are found. 
Describes one new species of Oribatidce , genus Pygmephorus. Mentions 
some species of GamasiDcE, genera, Gamasus , Latr., Uropoda , De Geer, 
Dermanyssus , Dux., Antennophorus, Hall ; TrombidiiDcE, genera, Otonys- 
sus , Trombidium , Rhyncholophus, Dug. ; Oribatidce, Hoplophora , Koch, 
Pygmophorus , Kram. ; HydraciiniDcE, subfamilies, Limnocharidce and 
Hydrachnidce ; AcaiiiDcE [-DiNcE), Trichodactylus , Dug., Tarsonemus , 
Canestr., Dermalichus , Alloptes, Heteropus , P ter optus , Hypopus. Distinc- 
tive characters of most of the genera are given. 
Haller, G. Gegen zwei irrthumliche Ansichten betroffend die Arach- 
niden. Ent. Nachr. viii. pp. 200-203. 
This relates to erroneous conclusions drawn from the mouth-organs and 
size of the Acari. 
Kramer, P. Beitrag zur Kenntniss der Milben-fauna Wurttemberg’s. 
JH. Ver. Wurtt. xxxviii. pp. 293-324, pi. v. 
Contains of Acarina atracheata 25 species, in four families and 13 
genera ; and A carina tracheata , 90 species in 10 families and 43 genera. 
Among the latter are four new genera and two new species. 
. Uber die segmentirung ber den Milben. Arch. f. Nat. xlviii. 
pp. 178-182, pi. xiii. figs. 1-4. 
The segmentation referred to is that of Alycus roseus , C. Koch. \Cf. 
Aun. N. H. (5) x. p. 183.] 
TROMBIDIIDiE. 
Henking, H. Beitrage zur Anatomie, Entwicklungsgeschichte und Bio- 
logie von Trombidium fuliginosum, Herm. Z. wiss. Zool. xxxvii. 
pp. 553-663, pis. xxxiv.-xxxvi. 
Treats on the anatomy, pp. 561-569 ; on the biology of the adult, 
