FAMILY BORRELINACEAE 1225 



Suborder III. Zoophagineae suhordo novus. 



From Greek phagein, to eat, and zoon, an animal. Viruses infecting animals but 

 having no plant hosts, so far as known. 



Key to the families of suborder Zoophaginae. 



1. Inducing diseases in insects as exclusive hosts. 



Family I. Borrelinaceae, p. 1225. 



2. Inducing diseases of the pox group. 



Famil}'' II. Borreliotaceae, p. 1229. 



3. Inducing diseases of the encephalitis group. 



Family III. Erronaceae, p. 1248. 



4. Inducing diseases of the yellow-fever group. 



Family IV. Charonaceae, p. 1265. 



5. Inducing diseases of the infectious anemia group. 



Family V Trifuraceae, p. 1282. 



6. Inducing diseases of the mumps group. 



Family VI. Rabulaceae, p. 1284. 



FAMILY I. BORRELINACEAE FAM. NOV. 



Viruses causing polyhedral, wilt, and other diseases in arthropods. The genus Bor- 

 relina Paillot was originally spelled Borrellina by error; from Borrel, name of French 

 scientist. 



Key to the genera of family Borrelinaceae. 



I. Known only as attacking lepidopterous insects. 

 Genus I. Borrelina, p. 1225. 

 II. Known only as attacking the honey bee, a hymenopterous insect. 

 Genus II. Morator. p. 1227. 



Genus I. Borrelina Paillot. 

 (Compt. rend. Acad. Sci., Paris, 182, 1926, 182.) 



Viruses inducing polyhedral, wilt, and other diseases; hosts, Lepidoptera, so far as 

 known. 



The type species is Borrelina bombycis Paillot. 



Key to the species of genus Borrelina. 

 I. Attacking silkworm. 



II. Attacking nun moth. 



III. Attacking gypsy moth. 



IV. Attacking cabbage worm. 



1. Borrelina bombycis. 



2. Borrelina efficiens. 



3. Borrelina reprimens. 



4. Borrelina brassicae. 



5. Borrelina pieris. 



