104 THE AGKICULTURAL PESTS OF INDIA. 



Scolopendridae. Myriapods or Centipedes occur in India 

 1 inches long. Mecistocephalus punctifrons is a species 

 of the East Indies. Scolopendra Ceylonensis is of that 

 island ; Sc. tuberculidens is of the East Indies ; Sc. cceru- 

 lio-viridis is of Australia, as also is Cremata Smithii. 

 Geophelus Cummingii occurs in the Philippines. M. T. 



Scolytus, a genus of the Xylophagi. 



Scorpions. The true scorpions belong to the sub-family 

 Scorpiones, one of the Arachnoidea, and include the 

 Buthus afer, B. Cassar of the East Indies, and B. imper- 

 ator (locality doubtful). Androctonus priamus occurs in 

 Java, and species of Androctonus in Rangoon and other 

 parts of the East Indies. With the scorpion when about 

 to strike, an exceedingly minute drop of the poison is 

 seen to exude at the extremity of the spine, the discharge 

 taking place before this is introduced into the flesh of the 

 victim ; but the secretion becomes more abundant when 

 the point meets with the resisting body (Blancliard}. The 

 poison is expelled by the contraction of the surrounding 

 muscular fibres. M. T. 



Scorpion beetle, Anthia sexguttata. 



Sesamum Indicum, Linn. The til in the North- Western 

 Provinces is liable to damage from ill-timed rain. Vern. 

 Til I). & F. 



Setaria italica, Bcaur, is sown at the commencement 

 of the rains, and reaped in September. Great loss is 

 sustained by the depredations of birds. Vern. Kangni. 

 D. & F. 



Silk is produced by several genera of the Bombycida3, 

 called silk-worms. Silk-worms are liable to several 

 diseases. Luisettes are worms which have not strength 

 to moult. They should be early removed, as they die 

 and infect the room. Arpians have exhausted all their 



