1917] Taxonomic Value of Ante7inal Segments 271 



Plate XXII 



Figure 28 is the graph of Pseudococcus pseudonipa (CkU.) collected from 

 palms. 1 he antennal formula for the mean curve of this species is 71246(^35). 



rForbe^.V''%f iVlt ^'''?^ ^^^^'^ clover-root mealy bug. Pseudococcus trifolii 

 {bovhes). It IS further characterized by the cerarii, which occur only on the 



T^T.z'^:t?l2M,r''' '-"''''■ ^'^ ^"^^""'-^^ ^"^"^"^^ ^- '^^ - '- -- 



Figure 30 is the curve of the measurements of the antennal segments of 

 Lecamum spp. non det. collected only from perennials. The antennal formula for 

 the mean curve of this species is 3427165. iuinmia lor 



Figure 31 is the graph of Pseudococcus omniverae species novo, which is verv 

 common and ommverous m its feeding habits. It is further characterized by th? 



:;e?S' i?8T2?57t4^^^^^^^^' '''■ ^""^ ^"^^""^^ ^°^"-^^ ^^ '^^ — --- ^^ 



Figure 32 represents the curves of Pulvinaria am vgdali Ckll., found abundantlv 

 "P?" o^il^ ^^^^^^s of gooseberry. The antennal formula for the mean rurvf c 



32145867. 



.^Il^'^T^'' ^^ '"^ ^^"^ ^'■''P^ ?^ "^ '""Z^" segmented species of coccid found on syc- 

 7Sa4)65 '""'"'" '^^" "°" "^ antennal formula for the mean curve L 



Figure 34 represents the golden rod Orthezia, 0. solidaginis Sanders a verv 

 curT??3?lT46(2?r" ^^^^^^la, Missouri. The antennal formula for the meS 



Figure 35 shows the curves of Pseudococcus longispinus (Targ.). The antennal 

 formula for the mean curve of this species is 82315467. S A ^ ne antennal 



pnt^nn^l"'? "" ^^ 1^ ^^ f^^^ °^ ^''^''''"''■^^ ^^tis (Linn.) the cottony maple scale. The 

 antennal formula for the mean curve of this species is 342185(67). 



