183 



PiLLERS (A. W. N.). On the Occurrence of Aleurobius farinae, De 

 Geer, in Skin Scrapings of Horses. -Vet. Record, London, xxxii, 

 no. 1619, 19th Julv 1919, pp. 22-23, 1 plate. [Received 

 27tli September 1919!] 



It has long been known that mites other than those that are recog- 

 nised as the actual cause of mange and allied conditions are found 

 upon the skin of man and domesticated animals. 



Glyciphagus domesticus has been recorded as a causal parasite 

 of scab in sheep and Aleurobius farinae, which has a wide distribution 

 [see this Review, Ser. A, \'ii, p. 91], has been found on the skin of horses 

 alone, as well as in company with Sarcoptes and occasionally with 

 Psoroptes. Under certain conditions in addition to the ordinary 

 nymph a hypopial nymph is developed, probably for the purpose of 

 distribution. Several such forms have been found by the author in 

 equine skin scrapings and they are often plentiful in lofts. Newstead 

 and Duvall's description [loc. cit.] of this form is quoted. 



SWELLENGREBEL (N. H.) & SwELLENGREBEL-DE GrAFF (J. M. H.). 



Description of the Anopheline Larvae of Netherlands' India, so far 

 as they are known till no^N.-Meded. Bnrgerlijk. Geneesk. 

 Dienst Nederl. -Indie, Batavia, 1919, Deel 6, 48 pp., 32 plates. 



The external anatomy of the Anopheline larvae of the Batch East 

 Indies are described and illustrated. Two keys for determining the 

 larvae are given : one, a dichotomic key for experts, covers all the 

 Dutch East Indian species and their varieties ; while the other, adapted 

 to students less well acquainted with the subject, is restricted to the 

 commoner larvae in their typical form. 



Descriptions are given of the following species, including varietal 

 forms, named and unnamed. Anopheles {Myzorhynchus) umbrosus. 

 Thee, is found in slowly running or stagnant clear water, shady 

 places being preferred. Its variety is always found in brackish or 

 salt water in or near nipa and mangrove swamps and is more partial to 

 shade than A. ludlowi, with which it is often found. A. {M.) sinensis, 

 Wied., is very common near dwellings, as well as at a distance from 

 them in muddy water in rice-fields ; it does not avoid brackish water 

 or sunny situations. A. (M.) barbirostris, Wulp, is very common both 

 near and away from dwellings and also in rice-fields where the water 

 is clear and vegetation is present. Salt water and sunny places are 

 not avoided. A. {M.) barbirostris var. pallidas, n., is rare in slowly 

 running water, jungle springs and rice-fields. A. {M.) albotaeniatiis, 

 Theo., occurs in jungle streams with slowly running, rather muddy 

 water containing fallen leaves, etc. An unidentified larva was found 

 in the island of Noesa Kembangan in running streams in mountain 

 jungle. Another unidentified larva was takeu in sunny rice-fields on 

 the Karoo plateau by Prof. Schiiffner and is possibly that of A. {M.) 

 gigas found there as an adult. A. (Stethomyia) aitkeni, James, occurs 

 in sunny or shaded small jungle streams and in very quickly flowing 

 water both in low and hilly country. A. {Myzomyia) aconitus, Don., 

 is found in marshes, rice-fields and fish-ponds with clear water and 

 also in running water ; it is more common in rice-fields that are 

 cultivated than in uncultivated ones and occurs both in sunny and 



(C621) a2 



