THE AGRICULTURAL PESTS OF INDIA. 113 



Tomici chiefly affect bamboos., and are very destructive 

 to them. The Hylesini also attack the bamboo, but not 

 so vigorously as their smaller brethren the Tomici, and 

 both are detected by the powdery excremented matter 

 which they and their larvae throw out. One small 

 species of Hylesinus in great numbers attacks the dead 

 wood of the cheer pine, and when hatched underneath 

 the bark, they bore in all directions, the tendency, how- 

 ever, being to reach the centre of the log. They do not 

 attack living trees, nor logs that have had their bark 

 stripped off. Tomicus perforans, monographus, in 1860, 

 attacked the beer barrels in the commissariat stores of 

 Burma and Lower Bengal, and the contents oozed 

 out from a multitude of pores, causing great loss. The 

 soldiers gave the insect an apt name they called it 

 Tippling Tommy. Tomici greatly affect bamboos. 72. T. 



Trap-door spiders comprise species of the genera Atypus, 

 Cteniza, Mygale, of the tribe Mygalidae and order Aran- 

 eidse. 



Trichina spiralis, Owen, a nematoid parasite, has its 

 seat in the muscular system of the human race. They 

 may exist in such numbers as to defy enumeration, yet 

 their presence does not seem in the least to impair the 

 functions of the part in which they are embedded ; and 

 similarly, as mentioned by Professor Williams, sheep 

 have been killed in prime condition by the butcher, and 

 their lungs found loaded with filaria. A female may 

 have 10,000 to 15,000 embryo. They have not yet 

 been detected in India. /. S. of Arts, 14, 2lst July 1871. 



Triticum sativum, Linn. Wheat. Indian, like English 

 wheat, suffers from the attacks of microscopic fungi, but 

 not to the same extent, owing doubtless to the greater 

 dryness of the climate. There is, however, a consider- 



H 



