54 Arachn. 
ARACHNIDA. 
with in many respects ; and, among others, the account given by Trevi- 
ranus of the generative organs appears to be more e^act than that of the 
former author. 
Lejptognathus, Hodge, characterized, type, L, violaceus^ Kram. ; Kramer, 
1. c. p. 160, pi. viii. figs. 1-4. 
Caligonus^ O. L. Koch, characterized, type, C, piger, 0, L. Koch ; id. 
1. c. p, 163, pi. viii. figs. 6-9. 
Cryptognathus, g. n., for C. lagena, id. 1. c. p. 166, pi. viii. figs. 10-16. 
Rhyncholophid.®. 
RyncholopTius sucidus, p. 124, fig. 1, Novaya Zemlya and Siberia, sig- 
natu8, p. 124, fig. 2, alhicomus^ p. 126, fig. 3, and tonsus, p. 126, fig. 4, 
Siberia, spp. nn., L. Koch, Sv. Ak. Haiidl. xvi. No. 6, pi. vi. 
Actineda setosa, sp. n., id. 1. c. p. 127, pi. vi. fig. 6, Siberia. 
Limnochabid^. 
Calyptostoma hardily Cambr. ; 0. F. George, Sci. Goss. 1879, p. 249, 
gives good figures of the concealed mouth parts, and describes what the 
author believes to be the nymphal form, with three tarsal claws, whereas 
the adult form possesses only two. 
SmariSj Latr., = Calyptostoma^ Cambr. ; L. Koch, 1. c. p. 127. /S. plana, 
sp. n., id. ibid. pi. vi. fig. 6, Siberia. 
Tetbanychid.®. 
Tetranychus borealis, sp. n., L. Koch, 1. o. p. 129, pi. vi. fig. 7, Novaya 
Zemlya and Siberia. 
EuPODIDJ]. 
Penthaleus borealis, p. 129, pi. vi. fig. 8, and crassipes, p. 130, pi. vii. 
fig. 1, id. 1. c., Novaya Zemlya. 
Bdellidji. 
Bdella pallipes, p. 131, fig. 4, and grandis, p. 133, fig. 7, Novaya Zemlya 
and Siberia, brevirostris, p. 132, fig. 6, and mollissima, p. 132, fig. 6, 
Novaya Zemlya, spp. nn., id. 1. c. pi. vii. 
HYDBACHNIDiE. 
Lebert, Hermann. Description de quelques esp^ces nouvelles d’Hy- 
drachnides du Lac Leman. (Memoire posthume.) Bull. Soc. Vaud. 
xvi. pp. 327-377, pis. x.-xii. {of. J. R. Micr. Soc. iii. pp. 69 & 70), 
The preface contains a biographical account of the author. After 
some general considerations on the form and structure of Hydrachnids, 
with special reference to those of Lake Leman, the species found therein 
are described, belonging to 3 groups : i. La faune littorale, those found to 
a depth of 4-8 metres from the shore (12 species) ; ii. La Region pro- 
fonde, found at a depth of 20-300 metres (6 species) ; iii. the parasitic 
