INSECTS AFFECTING THE ORANGE. 



gested to Signoret that the insects of this series are less fixed than their 

 congeners.) The tarsnl digi titles are, as usual, two long and two short, 

 those of the claws spreading widely at summit, and very ^tout at the 

 base. The anal-genital ring (more easily seen than in the other species 



we describe) is furnished with eight 

 long hairs. The anal plates are tri- 

 angular with roum.ed corners, and 

 are furnished with two long hairs 

 upon the disk, and three much 

 shorter ones at the ti >. 



" ThcEgg. The egg is ellipsoidal in 

 form, and 0.10 mm in length. In color 

 it is whitish with a yellowish tinge, 

 and is smooth and shining. 



" The neicly-hnichcd Larva. The an- 

 tennae are only 7 -jointed, and the 

 tarso-tibial articulation is hardly 

 marked. 



" This bark-louse was first noticed 

 in the orangery of the Department 

 upon the leaves and twigs." It was 

 also noticed upon various green- 

 house plants, pisipyrus, Chryso- 

 phyllnm, sago palm, and Croton va- 

 riegatum. Shortly afi er being found 

 here it was received from corre- 

 spondents in California as infesting 

 orange and oleander. Dining my 

 visit to California I found it upon a 

 single orange tree in the yard of 

 Mr. Elwood Cooper, near Santa Barbnra. 



"Actual observation shows the sumiise of Siguoret as to the locomo- 

 tive powers of this insect to have been correct. Wo have seen the 

 adult insects when removed Ircin their positions crawl back with ap- 

 parent ease." 



THE WAX SCALE WRITE SCALE. 



(Ccroplastes floridensis Comstock.) 

 [Fig. 20.] 



Descriptive. The adult kisect with its covering is from 2 mm to 3 mm 

 (0.08 to 0.12 inch) in length; oval in form, convex above, flattened or 

 concave beneath. The upper surface presents a rounded central prom- 

 inence, and on the margins six or eight smaller prominences surround- 

 ing the central one, and separated from it by a well marked depression. 

 Near the posterior extremity, at the bottom of a deep pit, is seen the 

 open end of a fcube projecting from the body of the insect* The excreted 



FIG. 19. LecaniumhcmiaphcericumTurff. 19, 

 adult females on Orange, nutum! size; a, adult 

 female, enlarged. (Alter Comstock.) 



