164 



Rothschild (N. C). Results of an Expedition to Korinchi Peak, 



Sumatra. — Jl. Federated Malay States Mus., Singajjore, viii, no. 3, 

 July 1919, pp. 1-6, 2 plates. 



The fleas collected include : Cemtophyllus Idossi, sp. n., from a 

 rat, Rattus inflatus ; C. idoneus, sp. n., from a squirrel, Tomentes 

 tenuis altitudinis, and a rat, Rattus orbus fraternus ; C. sodalis, sp. n., 

 from a squirrel, Callosciurus nigrovittatus bocJci ; and Pygiopsylla 

 robinsoni, Roths., from a tupai, Tana tana, and from Callosciurus 

 notatus, in Java. 



Edavards (F. W.). Results of an Expedition to Korinchi Peak, 

 Sumatra.— Ji. Federated Malay States Mus., Singapore, viii, no. 3, 

 July 1919, pp. 7-59, 4 plates. 



The Tabanidae collected on this expedition include Chrysops 

 dispar, Haematopota irrorata, H. ? lata, H. 1 unizonata, Tabanus optatus 

 and T. atrohirtus. 



Hutchison (R. H.) & Pierce (W. D.). U.»S. Bur. Entom. Studies 

 on the Dry Cleaning Process as a means of destroying Body 

 Lice. — Proc. Entom. Sac., Washington, B.C., xxi, no. 1, January 

 1919, pp. 8-20. [Received 12th September 1919.] 



Experiments were made with a view to determine the efficiency 

 of the dry cleanmg process as a means of destroying body lice 

 Pediculus humanus (vestimenti) in garments. The following is the 

 authors' summary : The open rotary washer system of dry cleaning, 

 when done according to the specifications quoted, is entirely effective 

 in destroying both the active stages and the eggs of body lice and has 

 additional advantages in the cleansing of the garments and absence 

 of shrinkage. The high temperature required in the drying tumbler 

 was found to be' essential for the destruction of the eggs. The v/ash 

 and rinse in gasoline are effective in destroying active stages, but 

 a large percentage of the eggs will survive this part of the process. 

 Gasoline itself is of no value as an ovicide, 18 "7 per cent, of the eggs 

 in one test hatched after 54 hours' immersion in gasoline. An attempt 

 to find a washing formula which of itself would be effective without 

 depending on the high temperature of the drying tumbler was not 

 successful, although results of one experiment with benzol, 30 '5° Be. 

 indicated that the oil could be used for this purpose, if infested garments 

 were soaked for 2 to 4 hours before washing. A preliminary soaking 

 in kerosene or in a 52° Be. kerosene-gasoline mixture followed by 

 washing in gasoline was found in laboratory tests to be ineffective. 

 Laboratory tests with a series of oils showed that benzol (30*5° Be.) 

 killed after 2-4 hours' immersion ; kerosene (44° Be.) killed within 

 10 minutes ; gasoline-kerosene mixtures (48° Be. and 52° Be.) killed 

 after 15 minutes ; a 57° Be. mixture did not kill within 17 hours. 

 Gasoline did not kill all eggs after 54 hours' immersion. When 

 immersion in any of the heavier oils was followed by a rinse in gasoline, 

 hatching occurred. Gasoline-soap emulsion was found to have little 

 killing effect on eggs even after 30 minutes' immersion. 



