Il6 ENTOMOLOGICAL NEWS. [Mar., 'l7 



expanded proximad. (Fastigii of the vertex and face subequal in 

 width. Pronotal lateral margins regularly crenato-dentate. Cephalic 

 tibiae with foramina narrowly open on cephalic face, broadly open 



on caudal face) Posidippus Stal. 



(Genotype: Gryllus (Tettigonia) citrifolius Linnaeus.) 

 AA. Cephalic margin of pronotal disk without median tooth. Tegmina 

 proportionately narrow, more lanceolate ; marginal field not equal to 

 one-half tegminal width at proximal third. Median and caudal 

 tibiae distinctly expanded or even lamellate proximad (except in 

 Frontinus dcgcerii and rarospinulosus). 



B. Fastigium of the vertex produced cephalad of the facial fasti- 

 gium, rounded at the extremity ; facial fastigium acuminate, 

 narrower than the fastigium of the vertex. Pronotum with 

 lateral margins of disk elevated, crassly dentate. Stridulating 

 field of male tegmina with free margin sinuate. Cephalic tibiae 

 with foramina rimato-conchate on both faces. Median and 

 caudal tibiae compressed, decidedly lamellate in proximal half. 



Cnemidophyllum new genus. 

 (Genotype: Posidippus lineatus Brunner.) 



BB. Fastigii equally produced or the fastigium of the face pro- 

 jecting cephalad of that of the vertex, in width either subequal 

 or the facial fastigium twice as wide as that of the vertex, both 

 bituberculate. Pronotum with lateral margins not distinctly ele- 

 vated, finely crenulate. Stridulating field of male tegmina with 

 free margin arcuate. Cephalic tibiae with foramina rimato- 

 conchate on cephalic face and open on caudal face. Median and 

 caudal tibiae compressed, not decidedly lamellate. 

 C. Fastigii equally produced, in width subequal. 



Frontinus Stal. 

 (Genotype: F. dcgecrii Stal.) 



CC. Fastigium of the face projecting cephalad of that of the 

 vertex, the facial fastigium twice as wide as that of the ver- 

 tex, both bituberculate Steirodonopis Scudder. 



(Genotype: S. bilobata Scudder.) 



POSIDIPPUS Stal. 

 1874. Posidippus Stal, Recens. Orthopt, II, pp. 20, 45. 



Genotype: Gryllus (Tcttigonia) citrifolius Linnaeus. 



The restricted genus Posidippus certainly includes, in addi- 

 tion to the genotype, P. ralidtis Saussure and Zehntner, while 

 of the exact generic position of stali, dohnii and irregulariter- 

 dentatiis Brunner and barellus Pictet we cannot speak at pres- 

 ent, having examined no material of these forms, all of which 

 have been placed in Posidippus as generally understood. 



