18 THE COCCIDAE 



with single notch; third pair of lobes incised, small, inconspicu- 

 ous; plates and pectinae long, slender, those of each side of each 

 third lobe often furcapectinae, arranged 0, 1, 1-2, 9-13, those of 

 each lateris arranged 2-2to4-5to7; dorsal oraceratubae few in 

 number, arranged in rows; anus located about its own width 

 cephalad of vulva; genacerores 20-30(18-42)20-30. Massachusetts, 

 Connecticut, New York, Ohio, Illinois, Minnesota, Missouri, Kan- 

 sas, Oklahoma, Texas on Ulmus americana Johns. 



bb. Pygidium with median pair of lobes not with distinct lateral 

 notch. 



c. Pygidium with median pair of lobes entire, not notched, large, 

 each broader than long, broadly rounded; second pair of lobes 

 incised, mesal lobelet oblique, much longer than broad and 

 larger than lateral lobelet, their lateral margins serrate; third 

 pair of lobes not well marked, incised, mesal lobelet larger 

 than lateral, both oblique and longer than broad, lateral mar- 

 gins serrate; plates arranged 0, 1, 1, 7-10, those of each lateris 

 arranged l-lto2-5to7; dorsal oraceratubae present, arranged 

 in rows; genacerores 12-19(21-29)15-22. District of Columbia on 



hickory. caryae Cooley. 



cc. Pygidium with median pair of lobes serrate, fused on proxi- 

 mal two-thirds, diverging at distal ends, forming deep notch, 

 lateral margins oblique; second pair of lobes deeply notched, 

 mesal lobelet triangular, larger than lateral, lateral margin 

 oblique, serrate, lateral lobelet triangular, entire; third pair 

 of lobes broader than long, oblique, serrate; plates not long, 

 those of second incisurae not as long as median lobe, arranged 

 0, 1, 1, 1, 5-8, those of each lateris arranged l-lto2-4to6; 

 dorsal oraceratubae arranged in rows; anus located slightly 

 cephalad of vulva; genacerores 7-10(15-26)14-18. Ohio on 



Nyssa. sylvatica Sand. 



t. Pygidium with median pair of lobes completely fused, mesal inden- 

 tation wanting, entire, lobes broader than long, truncate with round- 

 ed angles; second and third pairs of lobes not incised, each caudad 

 of reniform thickening, not prominent, entire, bluntly pointed; 

 plates subequal in length to median pair of lobes, arranged 0, 1, 1, 

 13-14, those of each lateris arranged 2to3-5-6; anus located thirteen 

 times its width from caudal margin and twice its width cephalad 

 of vulva; genacerores 10-10(17-20)10-18. California, New Mexico, 

 Mauritius on Quercus, Pasania quercus Comst. 



SPECIES OF AFRICASPIS 



i. Pygidium without plates adjacent to each median lobe; median 

 pair of lobes fused, three deep indentations forming four subequal 

 rounded lobules, mesal indentation marking division between lobes; 

 other lobes wanting; plates about as long as median pair of lobes, 

 arranged 0, 3-4, those of each lateris arranged 0-l-2to3-0-0 ; three 

 adjacent tooth-like projections between each median lobe and caudal 

 plate, single projection between caudal plate and next group; dorsal 

 oraceratubae numerous, especially on thorax; anus located near 



