28 Arachn. 
ARACHNIDA. 
P. Mdgnin, in “ Les parasites et les maladies parasitaires,” divides this 
family into 5 tribes, distinguished from each other by anatomical char- 
acters and habits, i. DETUiTicoLAi:, p. 138, including Glyciphagus, Carpo- 
glyphus, Tyroglyphus, Carpophagus, and Serrator. ii. Plumicola<j, p. 148, 
comprising DermoghjphuSy Meg., Fterolichus^ Hob., Freyana, Haller, 
Fteronyssus, Rob., Analges, Nitsch, Dermalichus, M4g. & Koch, Froclo- 
phyllodes, Rob., Fterodectes, Rob., Fterophagus, Meg. iii. Cysticol^, 
p. 161, comprising Laminoscoptes and Cytolichus. iv. Glikicol.®, p. 155, 
comprising Listrophorus, Pag., and Myocoptes, Clap. v. PsORiC^, p. 156, 
including Sarcoptes, Latr., Psoroptes, P. Gerv., and Chorioptes^ ibid. 
Alloptes palmatus, sp. n., G. Canestrini, 1. c. pp. 38 & 41, ph iv. fig. 1, 
on Fringilla ccelehs. 
Serrator, Meg., p. 144, and S. amphihius, Meg., p. 145, found in rotting 
mushrooms, = Tyroglyphus rostro-serratus, M4g. ; M^gnin, 1. c. 
Cytolichus sarcoptoides, M^g., id. 1. c. p. 153, pi. viii. [cf. id., J. de 
I’Anat. Phys. xv. 1879, pp. 123-153, pis. vii. & viii., where this species 
and Sarcoptes cysticola, Vizioli, are described and figured.] 
Listrophorus, Pag. : on this genus, cf. G» Haller, Z. wiss. Zool. xxxiv. 
p. 259. L. pagenstecheri, sp. n.. id. 1. c. pi. ix. figs. 1-3. 
Ilomopus, C. L. Koch : id. 1. c. p. 261. H. sciurinus, 0. L. Koch, 
figured, ibid. pi. ix. figs 4-6. 
Dermacarus, g. n., p. id. 1. c. 268. For D. sciurinus, Haller, p. 269, 
pi. xi. figs. 7-16. 
7'yrog typhus megnini, sp. n., id. 1. c. p. 273, pi. x. fig. 1, & pi. ix. fig. 16. 
On the eggs of Tyroglyphus and some other Mites, id. t. c. pp. 289-293, 
pi. ix. figs. 4-7, & pi. X. figs. 12-19 ; and on tho internal anatomy of Tyro- 
glyphus and Dermacarus, with a summary of the characters of the Tyrogly- 
phidce, id. 1. c. pp. 274-289, pis. ix.-xi. (in part). 
Glycyphagus. P. Kramer, in a paper on its post-embryonal develop- 
ment, concludes (contrary to Mdgnin) that the genital opening is deve- 
loped before the adult state is attained. The larval and nymphal stages 
are indistinguishable. Arch. f. Nat. xlvi. p. 102. 
P. Megnin, “ Sur une modification particuliere d’un Acarien parasite ” 
(0. R. xc. pp. 1371-1373), describes a protective cotton-like covering on 
the eggs of Cheyletus heteropalpus (?), found on Cardinalis fulgens. 
Acaridas. 
Lahidostomma luteum, Kramer. New to Britain ; A. D. Michael, J. 
Quek. Club, 1880, p. 107, pi. vi. fig. 1, nymph, ? adult. [This genus 
appears to belong to the family Fcecilophy sides, Cambr. 
Fyqmephorus spinosus, Kram. New to Britain; id. 1. c. pp. 113-120, . 
pi. vii. fig. 1, ad. fig. 2, ?. 
Paytoptida;. 
Phytoptus piri, Sorauer, described, and life-history given ; E. L. 
Tascheuberg, Praktische Insektenkunde, part v. p. 158, where reference 
