186 



Glaser, R. 1928 In Rivers, T. M. "Filterahle Viruses," 



^27 pp. Williams and Wilkins Co. , Baltimore. Chapt. 



VIII. Virus diseases of insects, pp. 301-333 (see page 



308). 

 *Glaser, R. W. , and Chapman, J. W. 1912 Studies on the 



wilt disease, or "flacheria" of the gypsy moth. Science, 



36, 219-221+. 



LEPTOTR 1 X BUCCAL I S 



Insect concerned: The mosquito, Anopheles maculipennis . 



According to Keilin (1921), who quoted Howard, Dyar 

 and Knah (1912), Perroncito, in 1899/ discovered a "bacter- 

 ial parasite of Anopheles maculipennis resembling "Lepto- 

 trix "buccalis." "The parasite infests the larva, passes 

 into the pupa, and destroys the imago soon after it emerges" 

 (Keilin). From the information given, it is difficult to 

 ascertain whether this organism is the same as the one now 

 known as Leptotrichia "buccalis . 



Howard, L. 0., Dyar, H. G. , and Knah, F. 1912 The mos- 

 quitoes of North and Central America and the West Indies, 

 I. Carnegie Institution, Washington. (Quoted "by Keilin, 

 1921. ) 



KeilinVX). 1921 On a new type of fungus: Coleomomyces 

 stegomyiae n. g. , n. sp. , parasitic in the "body cavity 

 of the larva of Stegomyia scute liar is Walker (Siptera, 

 Nematocera, Culicidae). Paras itol. , 13, 226-23^. 



Perroncito, E. 1899 Sopra una speciale forma di mi cos i 

 delle Zanzare. Bolletino della R. Acad, di med. di 

 Torino. (Not seen; taken from Keilin, 1921. ) 



Pneumococco 



Insect concerned: The flea, Pulex irritans . 



Pinto (1930) lists this organism as "being cultivated 

 from the digestive tract of Pulex irritans "by da Silva 

 (1916). Presumably the pneumococcus ( Diplococcus pneu - 

 moniae ) is meant "but since the original article was not 

 available, this could not "be ascertained. 



Pinto, C. 1930 Arthropodes paras itos e transmissores de 

 doencas. Vol. 1, 395 pp. (See page 367.) 



Silva, Pereira da. 1916 Exper. sur la trans, de la 

 leishmaniose infantile par les puces ( Pulex irritans ). 

 In Arq. do Inst. Camara Pestana. k, 26-27. (Not seen. ) 



