THE AGllICULTUHAL PESTS OF INDIA. 103 



found at the roots of the Queensland cane, but no damage 

 from them has been detected. W. Bancroft, writing in 

 1878, says that he had with advantage sown the Dolichos 

 lablab and Cajanus Indicus amongst and around sugar- 

 cane fields to attract the ichneumon flies which destroyed 

 the louse. D. tC F. Vcrn. Ikli t Ghanna. 



Salamandra maculata, the terrestrial salamander, secretes 

 a poisonous milky fluid. The aqueous salamander is 

 Triton cristatus. 



Sand-fly, a pest of Kurdistan, a serious torment, pene- 

 trating through everything, and preventing sleep. Rich. 



Saperda, sp., a longicorn beetle, found in the forests of 

 the North- Western Provinces. R. T. 



Sarcoptidse, a family of the Arachnoidea, comprising the 

 itch and louse mites in the genera Sarcoptes, Psoroptes, 

 Symbiotes, Myobia, Listiophorus, Myocoptes, Dermalei- 

 chus, and Demodex. They infest the smaller mammals. 



The itch insect, Sarcoptes scabiei, is extremely minute, 

 so that it is only just visible to the naked eye ; it is 

 012 of an inch in length, and '009 of an inch in breadth. 

 They can tunnel their way with considerable speed. M. 

 Bourguignon considers that one of these insects could 

 travel from the hand to the shoulder in less than ten 

 minutes. Other species occur in the lower animals, 

 but most animals have their own peculiar parasites, and 

 species can be transferred. Sulphur, petroleum, kerosene, 

 and copaiva kill them. 



Saw-flies. See Tenthredo. 



Schizodactylus monstrosus, Westwood. A leviathan mole- 

 cricket, which abounds in Monghir indigo fields. It is 

 called jhengur in Hindi. 



Sclerostoma syngamus are worms which lodge in the 

 trachea of fowls, and cause the gapes. 



