20 Arachn , 
ARACHNIDA. 
Michael, A. D. (1) On the Association of Gamasidce with Ants. 
P. Z. S. 1891, pt. iv, pp. 638-654, 2 pis. 
. (2) On the Variations of the Female Reproductive Organs, 
especially the Vestibule, in different species of Uropoda. J. R. Micr. 
Soc. 1890, pp. 142-152, pi. iv. 
Moniez, R. (1) Eremceus fockeui , Oribatide nouveau. Rev. Biol, iii, 
pp. 235 & 236, with fig. 
. (2) Sur une question de priorite a propos de Y Eremceus fockeui 
(_E7. minimus , Berl.). T. c. pp. 427 & 428. 
Nalepa, A. (1) Neue Gallmilben. N. Acta Ac. L.-C. Nat. cur. Iv, pt. vi, 
pp. 363-395, 4 pis. 
. (2) Genera und Species der Familie Phytoptidce. Denk. Ak. 
Wien, 1891, pp. 867-883. 
. (3) Neue Gallmilben. Anz. Ak. Wien, xix, pp. 198 & 199. 
. (4) Neue Gallmilben. Op. cit. xxii, p. 225. 
In these two papers the species are mentioned as new but not described. 
Railliet, A., & Lucet, A. De la presence du Sarcoptes minor chez le 
Rat d’eau ( Arvicola amphibius). Bull. Soc. Z. Fr. xvi, pp. 160-162. 
Trouessart, T. Considerations gdn6rales sur la classification des 
Acariens suivies d’un essai de classification nouvelle. Rev. Sci. Nat. 
Quest. 1891, pp. 289-308 (to be continued). 
TrOMBIDIIDJ). 
Trombidium , pt. 58, No. 8 ; Berlese. 
Iihyncholopliu8 ) pt. 69, No. 1, n. subgJ Apedolophus , type R . phalan- 
gioides ; 'Achorolophus, n. subg., types R. nemorum and R. trimaculatus ; 
4 Abrolophus , n. subg., type R. qiiisquiliarum , pt. 59, No. 1 ; id. 
Bdellid®. 
Ammonia , pt. 59, No. 3, latirostris (Herm.), Italy, No. 4 ; cceruleipes , 
Duj., Sicily, No. 5 ; id.' 
Bdella capillata , Kram., Italy, Sicily, pt. 59, No. 6 ; virgulata ) Can. & 
Fan., Italy, No. 7 ; id. 
Penthaleus , pt. 50, No. 1, ovatus , Koch, Italy, No. 2 ; egregius , n. sp^ 
Italy, No. 3 ; id. 
Notophallus, pt. 50, No. 4, hcematopus , Koch, Italy, No. 5 ; id. 
Eupodes , pt. 50, No. 6, variegatus , Koch, Italy, No. 7 ; fusifer , Can., 
Italy, No. 8 ; id. 
i HolotydeuSj n. g., pt. 50, No. 9 ; hydrodromus , Berl. & Trouess., Venice, 
pt. 50, No. 10 ; id. 
