1916] Weiss — The Coccidw of Neir Jersey Greeiihovses 23 



laborious hand methods are still the fashion in many greenhouses, 

 not from choice but of necessity. 



The following list consists of species which have been definitely 

 found infesting various plants in New Jersey greenhouses. No 

 attempt has been made to give a complete list of food plants, and 

 only those on which the insects were found are recorded. To Mr. 

 E. R. Sasscer, I am indebted for various identifications during the 

 past several years. 



ICERYA Sign. 

 /. purckasi Mask. On acacia, orange, lemon. 



Orthezia Bosc. 

 0. insignis Dougl. On coleus, gardenia, verbena, citrus, chrysanthemum, tomato 

 and other plants. 



PsEUDOcoccus Westw. 

 P. cifri Risso. On bouvardia, coleus, citrus, fuchsia, croton, ferns, bay trees, 



tomato, palms, geranium and many others. 

 P. longispinus Targ. On ferns, citrus, palms, dracena, coleus and nian\- others. 

 P. pseudonipap Ckll. On Kentia sp. and Cocos sp. 



Ceroplastes Gray. 

 C. cirripediformis Comst. On citrus. 

 C. fioridensis Comst. On citrus, oleander. 



Eucalymnatus Ckll. 

 E. tessellafiis Sign. On palms. 



Coccus Linn. 

 C. hesperidum Linn. On bay trees, oleander, crotons, begonias, palms, ficus, 



citrus, cyclamen, orchids, camellia and many others. 

 C. longtdus Dougl. On citrus, ficus, euphorbia, ferns and others. 



C, pscudohesperidvm Ckll. On orchids (Cattleya and Dendrobium spp.) 



Saisseti.\ Depl. 

 S. hemisphoerica Targ. On palms, ferns, oleander, croton, orchids, citrus camellia 



and many others. 

 S. olew Bern. On camellia, citrus. 



Diaspis Costa. 



D. hoisduvalJi Sign. On palms, orchids. 



D. bromelicp Kern. On pineapple, oleo fragrans, latania. 



Aulacaspis Ckll. 

 A. zamice Morg. On cycas revoluta. 



Hemichionaspis Ckll. 

 H. aspidisfrw Sign. On ferns, aspidistra, pandanus, orchids. 



