Oct. 4, 1915-Mar. 27, 1916 
Illustrations 
XV 
Sweet-Potato Scurf 
Page 
Plate LVII. A sweet potato showing the discoloration produced by Moni- 
lockaetes inf means . 792 
Plate LVII I. Monilochaetes infuscans: A, a branched conidiophore with co- 
nidia attached. B, an unbranched conidiophore, showing septation; conid- 
ium attached. C, a conidiophore from host, with conidium attached. D, a 
conidiophore from the host, showing the peculiar basal cell and septation. 
E , a conidiophore bearing conidium, showing diagrammatically the attach¬ 
ment to the host by a bulblike enlargement of the basal cell. F, two conid- 
iophores joined at the base and slightly sunken in the tissue of the host. G, 
two conidiophores joined by a single oblong cell. H, two conidiophores 
joined at the base and slightly sunken in the tissue of the host. /, a conidio¬ 
phore from the host with an almost spherical cell attached to the enlarged 
end cell. J, a conidiophore, showing an attachment of two almost round 
cells to the enlarged basal cell. K, germination and growth of conidia in a 
sweet-potato decoction in 24 hours. L, hyphae from a culture, showing 
characteristic branching and septation. M, a group of mature conidia. N, 
germination, growth, branching, and septation of the fungus at the end of 
42 hours in a sweet-potato decoction. 792 
Banana as a Host Fruit of the Mediterranean Fruit Fly 
Plate LIX. Fig. 1.—Popoulu variety of cooking banana found infested with 
the Mediterranean fruit fly. Fig. 2.—Cross section of the Moa variety of 
cooking banana, showing pulp infested by larvae of the Mediterranean 
fruit fly. 804 
Plate LX. Fig. 1. —A bunch of Chinese bananas ( Musa cavendishii). Fig. 2.— 
A bunch of Chinese bananas wrapped in banana leaves and ready for ship¬ 
ment to California. 804 
Plate LXI. Fig. 1.—Cleaning bananas in Hawaii before shipment. Fig. 2.— 
Tip of Chinese banana {Musa cavendishii), showing punctures made by the 
female Mediterranean fruit fly in attempts to deposit eggs within the peel. 804 
Plate LXI I. Fig. 1.—Rearing cage erected over 20 Chinese banana trees and 
inclosing 14 bunches in various stages of development. Fig. 2 .—Interior of 
rearing cage shown in figure 1.. 804 
Life-History Studies of the Colorado Potato Beetle 
Plate LXIII. Colorado potato beetle ( Liptinotarsa decemlineata): Fig. 1.— 
Egg mass. Fig. 2.—Young larva.. 926 
Observations on the Life History of the Cherry Leaf Beetle 
Plate LXIV. Galerucella cavicollis: Fig. 1.—Adult. Fig. 2.—Larva, second 
instar. Fig. 3.—Larva, third instar. Fig. 4. —Pupa. 950 
Plate LXV. Galerucella cavicollis: Fig. 1.—Eggs on ground at base of tree. 
‘ Fig. 2.—Eggs, enlarged. Fig. 3.—Larvae feeding on leaf. Fig. 4.—Work 
of larvae on foliage. Fig. 5. —Work of beetles on foliage. 950 
Apparatus for Measuring the Wear of Concrete Roads 
Plate LXVI. Fig. 1.—Instrument for measuring wear of roads in use on con¬ 
crete road. Fig. 2.—Photograph of details of instrument. 954 
Morphology and Biology of the Green Apple Aphis 
Plate LXVI I. Forms of Aphis pomi: Fig. 1.—Winged viviparous female. 
Fig. 2.—Male. Fig. 3.—Pupa. Fig. 4. —Oviparous female. Fig. 5.— 
Wingless viviparous female. Fig. 6 . —Intermediate. 994 
