186 



West Africa are affected with a skin disease that yields to treatment 

 with sulphur ointment. Attendants may become infested on their 

 arms, but when the animal is -cured the symptoms soon disappear. 

 The position and extent of the lesions on an animal that was only 

 examined after death are described, and in this case a species of 

 Sarcoptes was found. A table is given showing the measurements of 

 the various stages of the parasite. 



Stadtmann-Averfeld (H.). Uebersicht tiber die Morphologie der 

 vier Larvenstadien einiger Culiciden. [A Survey of the Morphology 

 of the four larval Stages of some Culicidae.] — Mitt. Zool. Inst. 

 Westf. Wilhelms-Univ., Miinster i. W., no. 3, 5th August 1921, 

 pp. 42-43. 



Details are given of the morphology of the four larval stages of 

 Culex pipiens, L., Theohaldia annidata, Schr., Aedes diversus, Theo., 

 and Mochlonyx {Corcthra) velntimts, Ruthe. 



Hegh (E.). Les Moustiques. Moeurs et Moyens de Destruction. — 



Brussels, Imprimerie Industrielle & Financiere, 1921, 239 pp., 

 105 figs. Price 12 Francs. 



This is a second edition, revised and brought up to date, of the 

 author's previous work [R. A.E., B, vi, 161]. The arrangement of the 

 text remains unaltered, but slight modifications and additional informa- 

 tion increase the original 200 pages to 239. This edition .should be of 

 even greater value to residents in Africa than the former one. 



Lawrence (H.). The Pathogenicity of the Demode x (Owen) in the 

 Human Being.— .1/^^. //. Australia, Sydney, 8th Year, ii, no. 3, 

 16th July 1921, pp. 39-40. 



Several cases of skin eruptions due to Demodex are recorded that 

 are considered to support the view that the presence of this parasite 

 in man may have a definite pathological significance. Further micro- 

 scopical study may decide whether the parasites concerned are really 

 all varieties of D. folliculonmi, or some acquired Demodex such as that 

 found in the skin of the dog. 



Headlee (T. J.) & Beckwith (C. S.). Sprinkling Sewage Filter Fly, 



Psychoda alternata, Say.—Rept. New Jersey Agric. Expt. Sta., 

 1917-18, Neiv Brunswick, N.J., 1919, pp. 214-221, 3 tables. 

 [Received 6th September 1921.] 



This paper is practically identical with one that has already been 

 noticed [R.A.E., B, vii, 24]. Haseman's description of the adult 

 fly is quoted. 



Headlee (T. J.) . Report on Mosquito Work. — Rept. New Jersey Agric. 

 Expt. Sta., 1917-18, New Brunswick, N.J., 1919, pp. 243-245 and 

 292-295. [Received 6th September 1921.] 



Particulars of the drainage operations carried out in various areas 

 and shipyards and an outline of future plans for mosquito control are 

 given. The mosquitos observed during the year included Aedes 

 (Ochlerotatus) cantator, A. sollicitans, A. sylvestris and Cidex pipiens. 



