704 



MEDICAL ENTOMOLOGY 



Almost every rat snake examined in Madras harbours one or more 

 specimens of Porocephalns pattoni ; they are often deeply embedded 

 in the lung tissue, the whole of the cephalothorax being concealed. They 

 should not be removed by traction or the body may break. The lung of 

 the snake should be dissected out and the whole placed in a Petri dish 

 full of saline solution. The linguatulids often free themselves, but if 

 this does not happen there is usually a tight constriction of fibrous tissue 

 behind the cephalothorax, which must be cut through with scissors 

 before the specimen can be freed. They will live for several days in 

 saline if the precaution is taken to renew it ; the females under these 

 conditions pass out enormous numbers of ova, which settle at the bottom 

 of the dish and form a granular debris. 



LITERATURE 



BRODEN, A., and RODHAIN, J. Contribution a 1'etude de Porocephalns moniliformis. 



Annals of Tropical Medicine and Parasitology- 

 Vol. ii. 1908. 



SAMBON, L. W. Porocephaliasis in Man. Journal of Tropical Medi- 



cine and Hygiene. Vol. xiv, 1910. Ibid xv, 

 No. 21. Ibid No. 24. Ibid Vol. xvi. No. 7. 



DARLING, S. T., and CLARK, H. C. Linguatula serrata (larva) in a Native Central 



American. Archiv. Int. Medic. Vol. x, 1912. 



VANEY, M. C., and SANfRON, L. W. Preliminary notes on three new species of Tongue 



Worms (Linguatulidae). Transactions Soc. Tropi- 

 cal Medicine and Hygiene. Vol. iii. No. 3. 1910. 



SPENCER, W. BALDWIN- The anatomy of Pentastomum teretiusculus. Quar- 



terly Journ. Micros. Science. Vol. xxxiv, 1890. 

 A valuable paper on the structure of Pentastomum. 



STILES, C. W. Baum und Entwickelungsgeschicte v. Pentastomum. 



Zeitsch. fiir Wissensch. Zoolog. Bd. LII, 1891. 



