420 THE COCCIDAE 



pairs longest, first and third pairs shortest, fifth and 

 sixth pairs slightly longer than latter, seventh pair very 

 small; median pair of lobes short and narrow, rounded, 

 entire; second pair of lobes short and broad, broader 

 than median pair, lateral margin broadly oblique and 

 crenulate; third pair of lobes short and broad, broader 

 than second pair, lateral margin broadly oblique, 

 serrate; pectinae short and narrow, distapectinae, ar- 

 ranged 2, 2, 2, 2, those of each lateris adjacent to third 

 lobe; genacerores (10-11)6-7. Florida, Mexico, England 



on Persea, Magnolia, Anthurium, Ilex, cocoanut-palm 



perseae Comst. 



ee. Pygidium with each lateris with deep indentations, appear- 

 ing distinctly saw-toothed. 



f. Pygidium with fourth pair of paraphyses distinctly 

 longer than third or fifth, never twice length of either, 

 first pair shortest, third and fifth pairs next in length, 

 sixth and seventh pairs next; median pair of lobes 

 broad, broadly rounded, subquadrangular, slight mesal 

 and lateral notches; second and third pairs of lobes sim- 

 ilar, broader than long, lateral margin longest and 

 strongly oblique, crenulate, subtriangular, bluntly round- 

 ed; pectinae short, narrow, distapectinae or furcapecti- 

 nae, arranged 1, 1, 2, 2; each lateris with about four 

 teeth; genacerores 3-3(8-11)5-7. District of Columbia, 

 Ohio, Illinois, Kansas, Florida on oak, hickory, pecan, 



grape obscvrus Comst. 



ff. Pygidium with fourth pair of paraphyses three times 

 length of third and twice length of fifth, fourth and 

 seventh pairs subequal and longest, first, third, and sixth 

 pairs subequal and shortest, fifth pair distinctly longer 

 than third and slightly shorter than fourth; paraphyses 

 knob-like at cephalic end; median pair of lobes 

 broad, broader than long, caudal margin longest; sec- 

 ond and third pairs of lobes similar in form, wide, <;hird 

 pair widest; each lateris with about six tooth-like pro- 

 jections; pectinae present, exceedingly minute; spira- 

 cerores wanting; genacerores (6-9)3-5. British Guiana 



on Erythraspis. erytJiraspidis Newst. 



bb. Pygidium with nine pairs of paraphyses. 



c. Pygidium with third pair of paraphyses four times as long as 

 fourth, second pair shortest, fourth, fifth, and seventh pairs 

 slightly longer, third and sixth pairs longest, first, eighth, and 

 ninth pairs intermediate; median pair of lobes broadly round- 

 ed, slight lateral notch; second and third pairs of lobes similar, 

 not notched ; pectinae truncate, arranged 2, 2, 2, 4, those of each 

 lateris furcapectinae; genacerores (4-4)3-4. New Zealand, 



Louisiana on Linum. sphaerioides Ckll. 



cc. Pygidium with third and fourth pairs of parphyses subequal in 

 length. 



