Oct. 4. iQis-Mar. 27, 1916 Illustrations XV 



Sweet-Potato Scurf 



Page 

 Plate LVII. A sweet potato showing the discoloration produced by Moni- 



lochaetcs infuscans 7^2 



Plate LVIII. Monilochaetcs infuscans: A, a branched conidiophore with co- 

 nidia attached. B, an tmbranched 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. 

 F, a conidiophore bearing conidium, showing diagrararaatically 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. /, 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 hotirs in a sweet-potato decoction 7^2 



Banana as a Host Fruit of the Mediterranean Fruit Fly 



Plate LIX. Fig. i. — 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. i. — h.hnnohoiQMnes&ha.na.n'asiMiisacavendishii). Fig. 2.— 

 A bunch of Chinese bananas wrapped in banana leaves and ready for ship- 

 ment to California 804 



Plate LXI. Fig. i.— -Cleaning bananas in Hawaii before shipment. Fig. 2. — 

 Tip of Chinese banana (Mtisa cavendishii) , showing punctures made by the 

 female Mediterranean fruit fly in attempts to deposit eggs within the peel . 804 



Plate LXII. Fig. i. — 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 i 804 



Life-History Studies of the Colorado Potato Beetle 



Plate LXIII. Colorado potato beetle (Liptinotarsa decemlineata): Fig. i. — 



Egg mass. Fig. 2. — Young larva 926 



Observations on the Life History of the Cherry Leaf Beetle 



Plate LXIV. Galerucella cavicolUs: Fig. i. — Adult. Fig. 2. — Larva, second 



instar. Fig. 3. — Larva, third instar. Fig. 4.— Pupa 950 



Plate LXV. Galerucella cavicolUs: Fig. i. — 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. i. — 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 LXVII. Forms of Aphis pomi: Fig. i. — Winged viviparous female. 

 Fig. 2. — Male. Fig. 3. — Pupa. Fig. 4. — Oviparous female. Fig. 5. — 

 Wingless viviparous female. Fig. 6. — Intermediate 994 



