279 



produced head. The vertex is a trifle longer than wide, extend- 

 ing well in front of the eyes and wider between them than an 

 eye. I cannot trace any transverse or discal keels. On the frons 

 there are two keels (which do not meet on the vertex or else- 

 where), which are rounded convexly. These do not unite at the 

 apical margin of the frons, nor do they meet the lateral keels 

 there. The frons exterior to these submedian keels is wide and 

 covered with sensory organs. The second segment of the an- 

 tennae is large and stout but short. I cannot trace any sensory 

 organs. The tarsi arc bisegmcntatc,, the posterior pair being 

 (provided each with a small mobile spur. 



The second and third instars are not remarkable, except that 

 the spur lengthens, the head shortens and the usual changes 

 take place in the thorax. The fourth instar is very close to the 

 adult, except that the body is still covered with sensory organs 

 and the submedian keels are still separate, not uniting at the 

 tipical margin of the frons. In this instar, the sensorv organs 

 on the antennae are very conspicuous. 



That the study of the nymphal instars will prove very help- 

 ful to a knowledge of the adults, may be inferred from the ge- 

 nera Percgrimis and Fhacalasfor. The only conspicuous differ- 

 ence between Percgrimis uiaidis (the "Corn-hopper") and Phaca- 

 htstor psciidoinaidis (the "false Corn-hoi)per") is that in the former 

 the tegmina are plain, in the latter the veins are very strongly 

 and closely granulated. However, in the former the nymphs 

 are smooth and unicolorous (yellow), in the lat+er they are gra- 

 nulate and are whitish, spotted and banded with dark brown. 

 Unfortunately, nymphs of the other species of the genus were 

 not obtainable to determine whether these characters arc generic 

 or only specific. 



A-Ir. Ballon kindly sent me eggs, nymphs and imagines of 

 Steiwcraiuts saccharivora (too late for study in time to incorporate 

 with this part) ; the ova are deposited in sugar cane after the 

 fashion of Perkiiisiella, but are somewhat densely covered with 

 white flocculence, as are the nymphs and the adults. 



Entropistidac. lender the name Dictyophora pallida, Cotes has 

 figured some of the stages oi a.nEutropisfid. Probably a new 

 genus is required, as Cicada pallida is not a Dictyophorinc. Cotes 

 refers it to subfam. "Eurybrachydinae." 



The eggs are laid along the natural hollow of the midrib of 

 sugar cane (not inserted, as in the Asiracidae) in masses, each 

 cluster containing from three to thirtv eggs; these are thicklv 



