INDEX. 69 



Page. 



Opuntia ficus-indica, food plant of Diaspis echinocacti 42 



result of work of insect therein described as abnormal 



fruit 35 



fulgida, bibliographic reference 56 



food plant of aphis 52. 53 



Chelinidia ap 20. 40 



Dactylopius tomentosus 42 



Diaspis cacti 42 



echinocacti cacti 42 



Liotropis contaminatus 36, 40 



Onychobaris mystica 44 



Volucella avida a scavenger therein 48 



leptocaulis, bibliographic reference 56 



flowers frequented by Diadasia australis rinconis 50 



food plant of Diaspis echinocacti cacti 12 



Disonycha varicornis 22. 43 



Gerstseckeria rlathrata 30. 44 



Onychobaris mystica 44 



lindheimeri, Apanteles (Pseudapanteles I sp. taken thereat 40 



Euglossa surinamensis thereon 53 



flowers frequented by Diadasia australis rinconis 50 



food plant of Diadasia echinocacti cacti 42 



littoralis, bibliographic reference 56 



flowers frequented by Diadasia australis opuntiic 50 



"longicorns," common name for species of Moneilema 13 



missouricnsis, food plant of Melitara dentata 28 



polyantha, food plant of Dactylopius (Coccus) sp 42 



Melitara prodcn ialis 28 



spp., bibliographic reference 55 



versicolor, food plant of aphis 52. 53 



Chelinidea sp 20 



vulgaris, food plant of Gerstseckeria hubbardi 30. 43 



Melitara prodenialis 28 



Opuntiaspis philococcus. (See Lepidosaphes [O punt it is pis] philococcus. 



Oscinis coxendix incidentally associated with cactus 53 



Othnius senecionis incidentally associated with cactus 52 



Ozam ia lucidalis, an injurious cactus insect 13, 36. 44 



Pachi/condyla harpax incidentally associated with cactus 52 



Paratiphia sp. incidentally associated with cactus 53 



Paromalus consors, scavenger in cactus 48 



gilensis, scavenger in cactus 48 



opuntiir, scavenger in cactus 48 



sp., scavenger in cactus 48 



Pasimachus californicus incidentally associated with cactus 51 



depressus incidentally associated with cactus 51 



Pelosoma capillosum, scavenger in cactus 47 



Perdita megacephala frequenting flowers of cactus ' 50 



I'crisporium sp., fungous disease of cactus, probable dissemination by Chelinidea 



vittigera 17 



Pheidole sp. incidentally associated with cactus 52 



Phileurus cribrosus incidentally associated with cactus 51 



Phorbia fusdeeps, scavenger in cactus 49 



Phoroccra comstocki, parasite of cactus insect i Melitara I 46 



Melitara junctolineella 27 



