xii Journal of Agricultural Research voi.i 
Page 
Plats LXIII. Root systems of wheat seedlings grown in 6-inch pots from 
seed externally sterilized and from seed inoculated with 
Helminihosporium gramineum from wheat. 490 
TEXT FIGURES 
Citrus Ichangensis, a Promising, Hardy, New Species from Southwestern 
China and Assam. 
Fig. i .—Citrus ichangensis , n. sp.: A, Pistil after the petals and stamens 
have dropped but before the style has fallen off; B, stamen as 
seen from one side; C, two seeds deformed by mutual pressure.. 1 
2 .—Citrus ichangensis , n. sp.: Fruit showing the very low, broad, 
apical papilla circumscribed by a shallow furrow. 2 
3 —Citrus ichangensis , n. sp.: A , Cross section of a large fruit; B , seeds.. 3 
4. —Citrus ichangensis: A , Calyx of dwarf wild form and pedicel with 
bracts; B , young ruit; C, flower bud and pedicel with bracts.. 4 
5. —Citrus ichangensis: Flowering branch from the type specimen.... 5 
6. —Citrus ichangensis: Flowering branch of dwarf wild form. 6 
7. —Citrus ichangensis: Flowering branch from a paratype in the her¬ 
barium of the Arnold Arboretum. 7 
Cysticercus Ovis, the Cause of Tapeworm Cysts in Mutton: 
Fig. i .—Cysticercus ovis: Hooks. 17 
2. —Cysticercus ovis: Head and neck. ig 
3. —Cysticercus ovipariens C=C. ovis): Fragment of head. 19 
4. —Cysticercus ovipariens l=C. ovis): Hooks. 19 
5. —Cysticercus ovipariens (—C . ovis ): Papillae on caudal bladder. . . 29 
6. —Hooks of Taenia ovis, T. hydaiigena , T. solium , T. balaniceps , and 
T. krabbei . 30 
7. —Sexually mature segment of Taenia ovis . 31 
8. —Sexually mature segment of Taenia hydaiigena . 31 
9. —Gravid segment of Taenia ovis . 32 
10. —Gravid segment of Taenia hydaiigena . 32 
11. —Surface of caudal bladder of Cysticercus ovis showing papillae.. 33 
12. —Surface of caudal bladder of Cysticercus tenuicollis showing trans¬ 
verse furrows. 33 
13. —Cysticercus ovipariens (~C. ovis): a , Hook; b, cyst containing 
cysticercus cut across. 38 
The Serpentine Leaf-Miner: 
. Fig. i.—T he serpentine leaf-miner (Agromyza pusilla ): a, Adult; b, side 
view of head; c, side view of thorax, showing characteristic 
color pattern; d , dorsal view of abdomen, melanic phase; e, 
outline of thorax, showing location of characteristic bristles... 59 
2. —Map showing known distribution of the serpentine leaf-miner 
throughout the world. 61 
3. —Map showing distribution of the serpentine leaf-miner within the 
United States. 62 
4. —Alfalfa leaf with eggs of the serpentine leaf-miner in situ, a, Egg, 
greatly enlarged; b , same, in situ, with parenchyma of leaf 
partly dissected away. 66 
5. —Larva of the serpentine leaf-miner, lateral view. 68 
6. —Puparium of the serpentine leaf-miner, ventral view. 68 
7. —Mouth armature of larva of the serpentine leaf-miner. 70 
8. —Diagram showing the range in temperature throughout the year 
at three widely separated localities at which observations were 
made on the serpentine leaf-miner. 73 
9. —Diaulinus begini , a parasite of the serpentine leaf-miner. At left, 
hind leg of Diaulinus websteri . 78 
10. —Larva of Diaulinus begini . 79 
11. —Pupa of Diaulinus begini . 79 
12. —Chrysocharis parksi , a parasite of the serpentine leaf-miner, a, 
Middle and hind legs of Chrysocharis ainsliei . 80 
13. —Zagrammosoma multilineata , a parasite of the serpentine leaf- 
miner .. 81 
