:506 Journal of the Asiatic Society of Bengal. [N.S., XIII, 1917. J 



cocoons and pupate. Platygaster oryzce is a black species com- 

 mon in galls on paddy, Panicum, etc., in most of the paddy 

 areas. In the Bellary and Kurnool districts a yellow brown 

 species of Platygaster was common in the galls of various grasses 

 such as Ischcemum, Ophiurus. Andropogon, etc. 



In the case of a third Proctotrupid only a single egg is 

 apparently laid in each Cecidomyiid egg. The parasite larva 

 kills the maggot when about half-grown, shoves off its excre- 

 ment and the remnants of the internal tissues of the host into 

 a coiner of the hollow skin and pupates inside in a cocoon. 

 This Proctotrupid is a black species about twice as large as 

 Platygaster. 



The above notes are mainly the result of stray observa- 

 tions made when opportunities occurred, and are confessedly 

 imperfect in a good many details, and I shall be amply repaid 

 if this paper would induce workers to take interest in this 

 obscure group and fill up the many lacunae that are at present 

 perceptible in our knowledge of galls on Indian grasses. 



EXPLANATION OF PLATE X. 



Fig. 1.— The picture on the left shows three galls in Pani- 

 cum fluitans ; the one on the right, two similar for- 

 mations in Apluda varia. In the latter, the grey 

 object dimly seen at the angle of the leaf axis on 

 the shaded background at the top represents the 

 empty pupal skin sticking out from the tip of the 

 hollow gall. 



Fig. 2. — Compound galls in various stages of formation in 



Cynodon dactylon. 



Fig. 3. — Galls in Andropogon pertusus They are not distinct in 



the photographs, but their positions are indicated 

 by the cross- marks. 



Flo. 4.— Shows a single shoot with the central gall in Andro- 

 pogon pertusus. The pale object seen feebly project- 

 ing from the shoot on the shaded background is the 

 pupal skin. 





