140 



While recommending the usual measures for extermination of lice, 

 which in that region are incredibly abundant, both Pedicidus capitis 

 and P. humanus {vestimenti) occurring, and for disinfection of clothing, 

 buildings, etc., the authors are of opinion that a long period must 

 elapse before the state of educational, intellectual and economic im- 

 provement will be such that general hygiene will constitute a successful 

 resistance to the spread of the disease. 



WoLLMAN (E.). Elevage aseptique de Larves de la Mouche a Viande 

 {CallipJwra vomitoria) sur Milieu sterilise a haute Temperature. — 

 C. R. Soc. Biol, Paris, Ixxxii, no. 16, 31st May 1919, pp. 593- 

 594. 



The larvae of CalUphora vomitoria are easily reared on meat sterilised 

 at a temperature of 115° C. (220° F.), but with a higher temperature the 

 results are not so good ; this is probably due to the fact that the coagu- 

 lation of the constituents owing to the increased temperature renders 

 assimilation by the small larvae more difficult. To eliminate this 

 factor brains were used in place of meat for further experiments. 



When eggs of C. vomitoria sterilised with corrosive sublimate were 

 placed in tubes containing brains sterilised at a temperature of 130° C. 

 (226° F.) for 45 minutes, the emerging larvae thrived better than on 

 the sterilised meat and were full-grown at the end of the 5th day. 



The following hypotheses are tentatively suggested pending further 

 investigations : (i) The vitamines of brain matter are not destroyed 

 when heated to a temperature of 130° C. (266° F.) continued for 45 

 minutes. This seems scarcely probable since 120° C. (248° F.) has 

 hitherto been considered sufficient to destroy them, (ii) The larvae of 

 C. vomitoria do not need " certain accessory factors of growth." 

 This is all the more remarkable in that the organism concerned is of 

 very rapid growth, increasing by hundreds of times its own weight in a 

 few days, (iii) The larvae themselves create vitamines from a food- 

 substance that is devoid of them. Investigation is now in progress 

 to elucidate these questions. 



Brolemann (H. W.). Sur quelques Culex des Pyrenees et Description 

 d'une Espece nouvelle.— ^wn. Soc. Entom. France, Paris, 

 Ixxxvii, nos. 3 and 4, 1918, pp. 425-440, 13 figs. [Received 25th 

 June 1919.] 



A new species of Culex, C.pyrenaicus, is described from a collection 

 mosquitos from the Pyrenees. 



Nagayo (M.). Miyagawa (Y.), Mitamura (T.) & Inamura (A.). 

 Ueber das Prosopon und die Nymphe der "Tsutsugamushi." [The 

 Adult and Nymph of the Mite, Leptotrombidinm akamuslii, 

 Brumpt.] — Verhandl. Japan. Path. Gesellschaft, Tokyo, vii, April 

 1917, pp. 133-135. 



This is a detailed technical description of the adult and nymph of 

 the mite carrying Tsusugamushi fever. The authors do not consider 

 that Miyashima and Okumura are justified in adopting the name of 

 Leptus alcamushi [see this Review, Ser. B, vi, p. 187-8]. 



