24 Arachn. 
ARACHNIDA (l878). 
Sarcoptidj]. 
P. M^gnin, under the heading “ Sarcoptides 'psoriques,” R. Z. (3) vi., 
figures the following species, with no accompanying text : pis. i. ( ^ ), ii., 
& iii., Pso'ioptes longirostris, M., var. equi ; vi. & vii., Chorioptes spathi- 
feru8 ; viii., C. 8eU/eru8y var. hyeme ; ix., C. ecatulatu8, M. The latter 
species = Sarcoptes cynotes, Hering, and occurs in ears of dogs, cats, and 
ferrets ; id. Bull. Soc. Ent. Fr. (6) viii. p. xxiii. 
AcARIDiE. 
M^GNIN, P. M^moire sur un nouveau groupe dAcariens, les Cheyle- 
tides parasites. Pet. Nouv. ii. pp. 234 & 235 (Report by M. Girard 
of the Entomological Section of the “ Seizi^me Reunion dos Soci6t(5s 
savantes des Departements en 1878”; also in J. de I’Anat. Phys. 
xiv. pp. 416-441, 4 pis.). 
The author considers that the true parasites should be divided into two 
principal sub classes: i., inoffensive ; ii., dangerous. After observations 
on Acarideous parasites in general, he includes in the Oheyletides (not the 
Cheyletides of Leach) : Harpirkynchiis^ g. n., Picobia, G. Haller, and 
Myobia, Heyden. In his remarks on the anatomy and physiology of this 
group, the author describes the digestive, respiratory, generative, and 
locomotive apparatus. A constant and remarkable fact is that in these 
parasites the male organ of generation is situated behind the anus (where 
this last exists), and in two species the female organ is similarly placed. 
Cheyletus venustissimus recorded as British ; the $ and her habits, and 
the previously unknown $ , larva, and nympha, described. A. D. Michael, 
J. R. Micr. Soc. i. p. 313, pi. 
Glyciphagus palmifer recorded from Britain, figured, and described in 
all stages ; id. J. Quekett Micr. Club, 1878, p. 20, pi. G. plumiger also 
recorded from Britain, and its female described and (for the first time) 
figured; id. Sci. Goss. xiv. p. 153. 
Analges, sive Dermalichus, C. L. Koch. G. Haller thoroughly revises 
this genus ; Z. wiss. Zool. xxx. pp. 50-80, pi. iii. A. 7iitzschi, p. 70, fig. 12, 
affinis^ p. 75, fig. 15, and certJiice, p. 76, fig. 16, spp. nn., id. 1. c. 
The same author, /. c. pp. 511-562, pis. xxxiii.-xxxv., enters still more 
fully into this genus, in respect to its synonymy, systematic position, 
biology, and anatomy. 
DimorphuSj g. n., Haller, 1. c. p. 514, pis. xxxiii. abc and xxxiv.de, 
formed for 16 known species of Dermalichus, 0. L. Koch. 
Grameria, g. n., id. 1. c. p. 522, for 0. lunulata, p. 524, figs, a ^ B $ , and 
major, p. 525, fig. c, pi. xxxiv., spp. nn. 
Freyana ovalis, sp. n., id. 1. c. p. 527, pi. xxxiv. fig. G (Nymphal form). 
Acarus P neglectus, sp. n., O. P. Cambridge, Transit Venus Exp. Zool. 
p. 221, woodcut, figs. 1-4, Kerguelen Island. 
Cheyletus Jlabellifer, Michael, J. R. Micr. Soc. i. p. 133, pi., Tamworth, 
feeding on Glyciphagus palmifer (habits described, and a review of the 
genus given) ; C. parasitivoi'ax, p. 425, pi. xxviii., on the hairs of rabbits. 
