66 



INSECTS AFFECTING THE ORANGE. 



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

 congeners.) The tarsal digitnles are, as usual, two long and two short, 

 those of the chiws si^reading widely at summit", and very 8tout at the 

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



we describe) is Inrnishcd with eight 

 long hairs. The anal plates are tri- 

 angular with roun( ed corners, and 

 are fuinished with two long hairs 

 upon the dit^k, and three much 

 shorter ones at the tip. 



' ' 27/ c Efftj. — T 1 1 e egg is el 1 i psoid al in 

 form, and 0.15""" in length. In color 

 it is whitish with a yellowish tinge, 

 and is smooth and shining. 



'■'•Thincwhj-liiiichcd Larva. — The an- 

 tennae are only 7 jointed, and the 

 tarso-tibial articulation is hardly 

 marked. 



" This bark-louse was first noticed 

 in the orangeiy of the Department 

 upon the leaves and twigs. It was 

 also noticed upon various green- 

 house i)lants, Disipyrus, Chryso- 

 phyllum, sago palm, and Croton va- 

 riegatum. Shortly afrer being found 

 here it was received from corre- 

 spondents in California as infesting 

 •MjcmxM orange and oleander. Dniing my 



Fio. 19. — LecaniurnhntnuphcericinnTMi^. 10, c «/ 



adult females oil Oiim<;o.ji:itMnil size; a, adult visit tO CalltomUl I fuund it Ul^Oll a 

 female, enlarged. (Alter Comslock.) , , , • , i « 



Single orange tree in the yard of 

 Mr. Elwood Cooper, near Santa Barbiwa. 



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

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

 adult insects when removt\l Ircin their positions crawl back with ap- 

 parent ease." 



■TUB WAX SCALE— WHITE SCALE. 



{Ccroplastes Jloridensis Comstock.) 

 [Fig. 20.] 



Descriptive. — The adult insect with its covering is from 2™"^ to 3°^ 

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

 concave beneath. The ni)per surface presents a rounded centred piom- 

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

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

 Kear the posterior extremi|-y, at the bottom of a deep pit, is seen the 

 opeu end of a fcubo i)rojectiug from the body of the insect. The excreted 



