28 Arachn. 
ARACHNIDA. 
A. G. Laker remarks on a Hydrachnidous parasite on Dytisciis mar- 
ginalia , supposed to be Hydrachna globulus in the larval stage. Ibid. 
Neumann, C. J. Sur le developpement des Hydrachnides (Araignees 
aquatiques). Ent. Tidskr. i. p. 169. 
[Noted in Zool. Rec. xviii. Arachn. p. 29, as not seen by the 
Recorder.] 
After a short view of the general history of the development of 
Hydrachnids, the author remarks that Limnesia pardina, Neum., imme- 
diately after its exclusion from the egg assumes the form of other 
Hydrachnids at their second stage of development. From his observa- 
tions he concludes that probably, like the larvae of Limnocharis, the larvae 
of Eylais pass the first stage of life on insects which live on the surface of 
the water, such as Ilydromctra. 
Smaris impressa , C. Koch, figured ; G. & R. Canestrini, Atti 1st. Venet. 
(5) viii. pi. ix. figs. 1 & 1 c. 
Arrhenurus viridis , Dug., described and figured; C. F. George, Sci. 
Goss. 1882, pp. 249 & 250. 
The A rrhenuri are ( l . c.) divided into two sections — i. Chitinous; ii. 
Membranous. The first division contains the curious “ tailed ’’ mites. 
[Cf. tom. cit. p. 194.] 
Arrhenurus globator , Mull., fig. (woodcut) 194-202, luccinator , id., 
fig. 203, p. 272, maculator , id., figs. 204-208, viridis , Dug., figs. 209-211, 
p. 273, described and figured; C. F. George, l. c. : in continuation of 
former papers [cf. Zool. Rec. xviii. Arachn. p. 29]. A. globator , Miill., 
described and figured; A. Borlese, Acari, Miriapodi, &c., fasc. 2, pi. vi. 
No. 6 [no pagination given]. 
Atax } Fabr. Various systematic and anatomical remarks aro made on 
this genus by F. Kouike ; Abh. Ver. Brem. vii. pp. 265-268, under the 
first head, the author’s statement (Revision von H. Lebert’s Hydrach- 
niden des Genfer Sees, Z. wiss. Zool. xxxv. [1881] p. 627) as to finding 
A tax bonzi, Clap., is corrected. The species should have been A. 
figuratus, Koch. The views of Claparede (Studien an Acaridea, op. cit. 
xviii. [1868] p. 474) are controverted as to the absence of an oviduct in 
the female, and in regard to the ejaculatory duct of the male of A tax 
bonzi. 
Atax intermedins , sp. n., for A. hypsilophorus , Beneden, and A. bonzi, 
Clap., pt., F. Konike, l. c. 
Gamasid^i. 
Berlese, A. Gamasi nuovi o poco noti. Bull. Ent. Ital. xiv. 
pp. 338-352. 
Tables are given comparing the genera Podocinum , Berl., Ilolostaspis , 
Kol., GamasuSy Latr., Lcelaps , Koch, Iphis , and Uropoda, Latr. A new 
genus ( Podocinum ) is characterized, and 2 new species are described. 
