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Essai sur les Cochenilles. 



109 



7, DiASPis GossYPii Asa Fitch, 1859, 3'' Ilcporl annual of New-York 

 State Agric. Soc, p. ik, 16. 



Cette espèce vit sur le cotonnier. En voici la description : 



It may not be wliolly out of place in Ihe connection to observe tliat 

 alniost every tree and shrub, as well as many herbaceous plants, are infes- 

 ted, each with a species of bark-Iouse or scale insect peculiar to it. As yet 

 however, no insect of this kind bas been recorded as perlaining to the 

 colton plant. But on some dried spécimens of the Gossypium religiosum, 

 sent me from INingpo, China by Rev. M. S. Culbertson, of the presbyterian 

 Board of Missions. 



1 find a scale insect placed along the sides of the mid-vein, upon the 

 under surface of the leaves. It is smaller than the scales of the apple : 

 bark-louse pale yellow, flattened, of a broad oval form, pointed at one end, 

 Ihe opposite or rounded end being whilish, Ihin and semi-tranparent. It 

 also shows a siender raised line running lengthwise upon each side of 

 the middle, and slight transverse wrinkles. ïhere is reason to apprehend 

 lhat this insect may find ils way to our shores at some future day and 

 become detrimental to one of the most important staple products of our 

 country. 



8. Lecanium padi Schrank, Faun. Boic, II, 1, 1/15, 1867, 

 Habit an den Zweigen der Traubenkirsche. 



Desc. Eyformig, fast flach. aus sehr vielen gerundeten schuppen fast 

 dachsiegelformig zusammengesezt. 



Cette espèce vivrait sur le Prunus padus. 



0. AspiDioTus RHODODENDRi G. Vvailes, Procecd. Trans. Lond., 1868, 

 t. V, p. 85 (sans description). 



