195 



exposed twice to the rays of the sun. Windless days are best. Post- 

 ponement of draining owing to cool weather is not detrimental, as the 

 cold prolongs larval development. The irrigation channels should 

 also be emptied from time to time. This method is advised against 

 A. maculipennis and A. {Myzorhynchus) hyrcanus, Pall, {pseudopidus, 

 Grassi). 



Herold (W.). Beobachtungen en zwei Feinden der Stubenf liege : 



Mellinus arvensis, L., und Vespa germanica, Fabr. [Observations 

 on two Enemies of the House-fly.] — Zeitschr. angew. Ent., Berlin, 

 viii, no. 2, May 1922, p. 459. 



The wasps, Mellinus arvensis, L., and Vespa germanica, F., are 

 recorded as preying on Musca domestica. 



Patton (W. S.). Note on the Occurrence of the Larvae of Philae- 

 matomyia crassirostris, Stein, in the Human Intestine. — Indian Jl. 

 Med. Res., Calcutta, x, no. 1, July 1922, pp. 57-59. 



Musca [Philaematomyia) crassirostris, Stein, only breeds in fresh 

 cow-dung. The occurrence of the larvae in the human intestine here 

 recorded is therefore thought to be the result of the observance of the 

 Hindoo ceremony of purification, at which the five products of the 

 cow, including a small quantity of fresh cow-dung, are mixed together 

 and eaten. It is quite conceivable that a mass of eggs or some of the 

 first stage larvae may have been ingested in this way. 



Patton (W. S.). Notes on two Cases of Cutaneous Myiasis caused by 

 the Larva of Sarcophaga sp. ? — Indian Jl. Med. Res., Calcutta, 

 X, no. 1, July 1922, pp. 60-62, 1 fig. 



The species of Sarcophaga concerned in the two cases of cutaneous 

 myiasis in man recorded here could not be identified, as only preserved 

 larvae were available for examination. The importance of breeding 

 any such larvae to the adult stage is pointed out. For this purpose 

 the larvae should be placed in some meat and wrapped up in many 

 layers of paper. The puparia should be placed in a test tube, and the 

 adults, especially the males, should be carefully pinned with their 

 puparia. 



Patton (W. S.). Note on the Egg-laying Habits of Cohholdia elephantis, 

 Go\i\iO\^.— Indian Jl. Med. Res., Calcutta, x, no. 1, July 1922, 

 pp. 63-65, 1 fig. 



Very little is known of the life-history and habits of Cobboldia 

 elephantis, Cobbold (Indian elephant stomach bot), a serious pest of 

 elephants in India. Egg masses have been taken from the lower 

 surface of the tusks close to the lips ; in the case of young animals 

 and those without tusks, they are probably deposited at the base of 

 the trunk in the neighbourhood of the mouth. The eggs apparently 

 only hatch when they are moistened, and this under natural conditions 

 probably occurs when the animals are drinking or by means of the 

 saliva. 



The need for further investigations along these lines is pointed out, 

 as with an accurate knowledge of the egg-laying habits of this fly there 

 should be every possibility of destroying the eggs before they hatch. 



