28 Arachn, 
ARACHNIDA. 
ii, Acarina Iracheata^ chiefly on account of the mouth-organs and post- 
embryological development. 
In Am. Nat. xv. p. 677, is a note of a communication from G. Haller to 
the effect that from the Acaridea having three pairs of maxillae, a true 
labium with palpi, and two pairs of abdominal as well as cephalothoracic 
legs, he considers they are much more nearly allied to the Crustacea 
than to the Arachnida, and should form a class equivalent to the Crus- 
tacea, Myriopoda, Arachnida, and Insecta. 
OuDEMANS, A. C., JuNR. Jets Over Acarina in ’t algemeen. Tijdschr. 
Ent. xxiv. pp. 101-108, pis. xi. & xii. 
Trombidiidji. 
G. Cavanna, Bull. Ent. Ital. xii. [1880] p. 290, remarks upon the dis- 
covery by Sig. Pichard of a Trombidiiim which destroys the Phylloxera. 
Up to this time there were but tw’^o Acarideous enemies of the Phyl- 
loxera known, Tyroylyyhus phylloxerce, and IToplophora arctata. 
Tromhidium deserticola, sp. n., Holmberg, Informo, &c., p. 1G5, pi. iv. 
fig. 14, N. Patagonia. T. albicolle, p. 300, fig. 7, and T. sarcasticum, 
p. 301, fig. 8, spp. nn., id. Peribd. Zool. Argent, i. pi. vi. Buenos Aires. 
T.fragum, sp. n., Koch, Abh. Ges. Gorl. xvii. p. 71, Niesky. 
Phyncholophus humeralis, sp. n., Karsch, B. E. Z. xxv. p. 36, Japan. 
Linopodes ? gracilipes, sp. n., id. ibid., Japan. 
Actineda astripus, sp. n., id. 1. c. p. 37, Japan. 
EuPODIDiE, 
The group JEupodidce characterized ; P. Kramer, Z. ges. Naturw. liv. 
p. 448. 
Scyphius, Koch, recharacterized, id. L c. p. 449, and S. terricola, Koch, 
described, p. 450, pi. iv. fig. 14. 
Eupodes, Koch, recharacterized, id. 1. c. p. 450, pi. iv. fig. 15. 
Scyphius is placed by Canestrini and Fanzago in the family Rhyncolo- 
phini, Atti 1st. Venet. (5) iv. pp. 69-74. 
BdELLTDtE. 
Oxynamba, g. n. (for Eumceus, and Lionotus, C. L. Koch, pre-occupied). 
0. liliputana, sp. n., F. Karsch, B. E. Z. xxv. p. 37, Japan. 
Bdella longitarsa, sp. n., id. 1. c. p. 37, Japan. B. crassirostris, sp. n., 
p. 442, fig. 7, longirostris, auctt. p. 443, fig. 8 a, b, lapidaria and aren- 
aria, p. 444, fig, 10 a, b, silvatica, p. 445, fig. 11a, 6, capillata, p. 446, 
fig. 12, spp. nn., Kramer, Z. ges. Naturw. liv. pi. iv. 
Scirus taurus, sp. n., id. 1. c. p. 433, pi. iii. figs. 9-11. 
Hydrachnidje. 
G. Haller, in “ Die Arten und Gattungen der Schweizer Hydrach- 
niden Fauna,” MT, Ges. Bern, 1881, pp. 18-83, 4 pis., divides Hydrach- 
nidce into two families : i. Medioculatce ; ii. Lateroculaice. The former 
