A SYNOPSIS OF THE APHIDIDAE 167 



Hemlock, Poison, see Conium 

 Hemlock, Water, see Cicuta 

 Heracleum (cow parsnip) 



123. Aphis gossypii Glover 



125. Aphis heraclei Cowen 

 Heteromeles (California holly, Christmas berry) 



170. Prociphilus alnifoliae (Williams) 



103. Ehopalosiphum nervatum Gillette 

 Heuchera (alum root) 



69. Macrosiphum heucherae (Thomas) 

 Hibiscus (rose mallow) 



121. Aphis euonomi Fabr. 

 Holly fern, see Cyrtonium 

 Hollyhock, see Althaea 

 Holly, mountain, see Heteromeles 

 Honey flower, see Melianthus 

 Honeysuckle, see Lonicera 

 Hop, see Humulus 

 Hordeum (barley) 



111. Aphis avenae Fabr. 



68. Macrosiphum granarium (Kirby) 

 Houndstongue, see Cynoglossum 

 Humulus (hop) 



123. Aphis gossypii Glover 

 98. Phorodon humuli (Schrank) 

 Hydrangea (hydrangea) 



123. Aphis gossypii Glover 

 Indian mallow, see Abutilon 

 Ironweed, see Veronina 

 Ivy, Engislh, see Hedera 

 Ivy, German, see Senecio 

 Jasminum (jessamine) 



70. Macrosiphum jasmini (Clarke) 

 Jessamine, see Jasminum 



Jimpson weed, see Datura 

 Juglans (walnut) 



24. Callipterus calif ornicus (Essig) 



25. Callipterus caryae Monell 



23. Chromaphis juglandicola (Kalt.) 



26. Monellia caryella (Fitch) 

 Knotweed, see Polygonum 

 Lactuca (lettuce) 



79. Macrosiphum solanifolii (Ashmead) 

 Lamb 's-quarters, see Chenopodium 

 Lathyrus (sweet pea) 



74. Macrosiphum pisi (Kalt.) 

 Laurel, see Laurus 

 Laurel, California, see Umbellularia 

 Laurestinus, see Viburnum 

 Laurus (laurel) 



150. Aphis viburnicolens n.sp. 



