434 THE COCCIDAE 



as lobes; dorsal oraceratubae few, not in longitudinal rows. 



Australia on Casuarina. bidens Green. 



cc. Pygidium with anus four times its width from caudal mar- 

 gin; median pair of lobes large, elongate, convergent, lateral 

 margin oblique, two deep notches; plates, rarely furcapectinae, 

 six on each lateris, arranged in two or three groups of two 

 plates each, one near each median lobe, two short distance 

 cephalad, third still farther cephalad, wanting in median in- 

 cisura; lateres crenulate; setae long and stout, as long as or 



longer than lobes. Canary Islands on Argyranthemum 



canariensi? Lindgr. 



SPECIES OF REMOTASPIDIOTUS 



a. Pygidium with median pair of lobes short, not projecting much be- 

 yond general contour of pygidial margin, close together, distal 

 ends practically contiguous, broad and obliquely truncate; pectinae 

 apparently wanting, two minute plates adjacent to lobe; each lateris 

 bluntly serrulate, small projection near lobe, four much larger prom- 

 inent ones at considerable distance cephalad of caudal projection; 

 anus oval, about six times its width from caudal margin and four 

 times from vulva; surface striate with rows of small round dorsal 

 oraceratubae. French Bay, Bruce Peninsula, Shores of Lake Huron, 

 Canada on Arctostaphylos and California on Grindelia, Eriophyllum, 



Corethrogyne. dearnessi Ckll. 



aa. Pygidium with median pair of lobes short, not projecting beyond 

 general contour of pygidial margin, contiguous, distal ends oblique 

 with mesal angle produced; second and third pairs of lobes want- 

 ing; each lateris serrate with two inconspicuous rounded projec- 

 tions located cephalad where a lobe would be expected; plates lim- 

 ited to two, short but easily distinguished just cephalad of each 

 median lobe; setae normal; anal opening large, four times its width 

 from caudal margin; dorsal surface striate with rows of oracera- 

 tubae, much less conspicuous than in preceeding species. New South 

 Wales on Chenopodium. chenopodii Marl. 



SPECIES OF CHENTRASPIS 



Pygidium with median pair of lobes fused into single rectangular lobe, 

 twice as broad as long, margin notched; pectinae of each lateris ar- 

 ranged in three groups near lobe, arranged 2-2-1, separated by indenta- 

 tions, unapectinae; setae stout, nearly as long as pectinae; each lat- 

 eris cephalad of pectinae finely striate or undulate. Australia on 

 Acacia. unilobus Mask, 



SPECIES OF HEMIBERLESIA 

 a. Pygidium with pectinae or plates in median incisura. 



b. Pygidium with pectinae or plates on each lateris. 



c. Pygidium never with more than four, usually twc or three, 

 pectinae or plates on each lateris. 



d. Pygidium with unapectinae on each lateris. 



