28 General Catalogue of the Homoptera 
1925 Pyrilla perpusilla (?) Singh-Pruthi, Trans. Ent. Soc. London 
1925: 218; PI. XXVIII, Fig. 233 [d' genitalia, illustrated] 
1927 P[yrilla\ perpusilla Chopra, Rept. Dept. Agr. Punjab 1 (2) :88 
[Life history, notes] 10 
1929 Pyrilla perpusilla Husain, Rept. Dept. Agr. Punjab 1928 1 
(2) :61 [Life history, parasites] 10 
1932 P[yrilla\ perpusilla Fletcher, Sci. Rept. Agr. Res. Inst. Pusa 
1930-31 : 87 [Economics] 5 
1934 Pyrilla perpusilla Pemberton, Proc. Assoc. Hawaiian Sugar 
Tech. 1934: 9 [Economics] 2 
1935 Pyrilla perpusilla Isaac and Misra, Agr. Live-stock India 3: 
316 [Economics] 2 ’ 5 
1937 Pyrilla perpusilla Singh-Pruthi, Indian Jour. Agr. Sci. 7: 511; 
PI. XLIV, Figs. 1-2; PI. XLV, Figs, la-d [Economics, taxonomy, 
illustrated] 2 
1937 Pyrilla perpusilla Singh-Pruthi, Sci. Rept. Imp. Agr. Res. Inst. 
New Delhi 1935-36: 124 [Economics] 2 
1938 Pyrilla perpusilla Anandan, Jour. Madras Agr. 26: 54 [Econo- 
mics, parasites] 5 
1939 Pyrilla perpusilla de Seabra, Arq. Secc. Biol, e Par. 3: 95 [Eco- 
nomics] 
1940 Pyrilla perpusilla Ayyar, Handbook of economic entomology 
for South India 1940: 144, 195; Fig. 128IV [Economics, illus- 
trated] 12 :476 [Food plants] 2 
1940 Pyrilla perpusilla Rahman, Proc. Indian Acad. Sci. 12: 69 
[Predators] 2 
1940 Pyrilla perpusilla Rahman and Xath, Bull. Ent. Res. 31: 179; 
PI. VI; Text Fig. 1 [Economics, life history, illustrated] 5 - 7 - *• 
to . 11 , 13 . 14 . 15 
1941 Pyrilla perpusilla Rahman, Indian Jour. Agr. Sci. 11: 121, 122, 
125, 126 [Parasites] 2 
1942 P\yriUa) perpusilla Qadri and Aziz, Indian Jour. Agr. Sci. 12: 
883-888; Figs. 1-6 [Notes, illustrated] 2 - to. u. », n 
1943 P[yrilla] perpusilla Bohart, Ann. Ent. Soc. America 36: 356 
[Parasites] 2 • 5 
1944 Pyrilla perpusilla Thompson, Catalogue of parasites 194-1: 97 
[Parasites] 2 
1948 Pyrilla perpusilla Gupta, Indian Farm. 9: 401 [Life history 
notes, control] 11 
1949 Pyrilla perpusilla Qadri, Jour. Zool. Soc. India 1: 135; Text 
figs. 4g-i, 5a-h, 6a, 7a [Morphology of o' genitalia, illustrated] 
1950 Pyrilla perpusilla Qadri and Aziz, Publ. Aligarh Muslim Univ. 
