32 Arachn. 
ARACHN1DA. 
Trombidiidje. 
Cheyletiella, g. n., for parasitivorax (Megn.), Canestrini, Atti 1st. 
Venet. iii. p. 1658 ; the species described and figured, p. 1663, pi. xix. 
fig. 3. 
Harpicephalus, n. n. for Harpirrhynchus (Megn.), preocc.; id. t. c. 
p. 1657. 
Cheylunis , g. n., for C. socialis, sp. n., Trouessart, Bull. Soc. Angers, 
1885, p. 90, on birds. 
Laboulbene & Megnin. Memoire sur le Sphcerogyna ventricosci (New¬ 
port). J. de l’Anat. Phys. xxi. pp. 1-17, pi. i. 
Synonyms of this species are Acaras tritici (Lagreze), Heteropus ventri- 
cosa (Newp.), Physogaster larvarum (Lichtenst.), the new genus Sphcero- 
gyna being proposed on account of the globe-shaped abdomen of the 
female. This is ovoviparous, and gives biith to adult males and females ; 
the latter are fecundated at once. 
Linopodes globosus, sp. n., Canestrini, op. cit. ii. p. 696, Roma. 
Ottonia spinosa, sp. n., id. op. cit. iii. p. 333, pi. v. fig. 1, Dosso di Tavon, 
on plants. [To the same genus belongs also ( Trombidium ) bifoliosum 
(Can.), p. 332 ; vide infra.~\ 
Bhyncholophus agilis, p. 694, Trentino, siculus , p. 695, Sicily, spp. nn., 
id. op. cit. ii.; R. similis , Sardinia, p. 338, and pulcher, Genovesato, p. 342, 
pi. vii. fig. 1, spp. nn., id. op. cit. iii. ; R. cavannce , p. 137, fig. 1, globiger , 
p. 139, fig. 2, spp. nn., from Italy, Berlese, Bull. Ent. Ital. xvii. pi. i. 
Tetranychus dugesii , sp. n., D. Cano y Alcacio, Nat. Mex. vii. p. 197, 
pi. ii. figs. 1-5, Mexico, on Medicago denticulatci (Willd.). 
# Wood-Mason, J. Report on the Tea Mite ( Tetranychus bioculatus ) 
... of Assam. London: 1884, 8vo, pp. 1-20, pis. i.-iii. 
Trombidium bifoliosum (= Ottonia bifoliosa , vide supra), p. 693, 
Florenz, papnanum, p. 718, pi. vi. fig. 5, on an Australian Longicorn 
beetle, spp. nn., Canestrini, op. cit. ii.; T. setulosum, sp. n., Berlese, t. c. 
p. 141, pi. i. fig. 3, Cagliari. 
MYOBIIDiE. 
Disparispes , g. u., for D. bornbi , sp. n., Michael, Tr. L. S. xvii. p. 390, 
pi. xv. 
P HYTOPTIDiE. 
Low, F. Ueber neue und schon bekannte Phytoptocecidien. Verh. z.-b. 
Wien, 1885, pp. 451-470. 
New galls produced by Pliytoptus are recorded on Achillea nana , 
Anchusa officinalis, Galium infestum, G. lucidum, Gentiana rhcetica, Lycium 
europceum, Rubus gremelii , Sedum album, Sernpervivum Mr turn, Seseli hip¬ 
po niarathr urn, Vitex agnus castus. 
