188 JOURNAL, BOMBA Y NA TUBAL HISTORY SOCIETY, Vol. XV. 



Besides the migratory locust proper, most of the provinces of India 

 have one or two large local locusts, which particularly affect their own 

 part of the country and produce the local swarms which on occasions do 

 so much damage. 



Acridium succinctum is the locust of the Bombay Presidency. 

 (Fig. 16.) It is a large locust resembling A. pereginum from which it can 

 be distinguished by its different colouration. The wings are dark 

 brown at their base, this colour opening out into two broad bands 

 which extend about half way down the wing. Between these bands 

 are several black spots. The apical half of the wing is transparent 

 with a few black marks which lie parallel to the venation of the wing. A 

 broad yellow dorsal band runs down the head and thorax and is continued 

 along the upper edge of the wings. There is also a broad lateral yellow 

 band on the thorax which is continued on to the wings, with a narrow yel- 

 low line beneath it on the thorax. The Bombay locust breeds in the Ghats 

 and commits periodically considerable havoc amongst the crops of the 

 Deccan and Konkan, It is also to be found in Western Bengal, and 

 probably breeds in the Chota Nagpur hills. In the Nilgiri range of hills 

 in Madras, Acridium ceruginosum, Acridium melanocorne and Tryxalis 

 nasuta (Fig. 17) have their home and are the locusts which at times 

 swarm over 

 the Madras 

 Presidency 

 from that 

 centre. Two 

 species Tryx- 

 alis nasuta,* 



and Oxya velox Fm _ 17- _ The pointed-snouted locust. Tryxalis nasuta. 



have been re- (Madras Presidency)-}. 



ported as attacking and injuring }'oung chir (Pinus long i folia) and 

 robinia seedlings in Kangra Valley, Punjab. Both these latter 

 insects feed also upon crops and are to be found ail over the country. 

 The genus Tryxalis can be recognised by the pointed shape of the head, 

 the insect looking as if it had a pointed snout. (See Fig. 17.) 



Chrotoganus sp. is another destructive locust as it feeds upon crops 

 of all kinds, biting off the young plants as soon as they appear 

 above the ground. Indigo, bajra, opium, wheat, barley, linseed, 

 and young chir plants have been reported as suffering from the attacks 



* See the author's ' Departmental Notes on Insects that affect Forestry,' No. 1, pp. 1 — 5. 



