314 Mr. W. L. Distant on Ilomoptera. 



Pacaeina, gen. no v. 



Head (including eyes) broader than base of mesonotuni ; 

 eyes projecting beyond anterior angles of pronotum ; vertex 

 at area of ocelli much longer tlian front ; pronotum witli the 

 posterior angles moderately lobately produced, its lateral 

 margins oblique^ slightly sinuate, its length shorter than that 

 of mesonotuni ; abdomen about as long as space between apex 

 of head and base of cruciform elevation ; tympanal coverings 

 distinct but inwardly concavely narrowed and exposing the 

 tympanal cavities ; face convex, a little broader than the space 

 between it and eyes ; opercula about reaching base of abdo- 

 men, their lateral margins oblique, their posterior margins a 

 little rounded ; anterior femora armed with two strong spines 

 beneath ; rostrum about reacbing the posterior coxae ; tegraina 

 and wings hyaline ; apical areas eight. 



Type, P. signifera, Walk. [Cicada). 



Akiasa, gen. no v. 



Head (including eyes) wider than base of mesonotuni, the 

 eyes projecting beyond anterior pronotal angles, vertex at 

 area of ocelli as long as or a little shorter than front ; posterior 

 angles of pronotum more or less sublobately produced ; abdo- 

 men about as long as space between apex of head and base of 

 cruciform elevation ; tympana largely exposed, the flaps only 

 upwardly developed on the lateral areas ; face large and 

 globose; rostrum reaching the posterior coxte ; opercula 

 short, not passing base of abdomen ; abdomen beneath 

 prominently channelled at each lateral margin; tegmina and 

 wings hyaline, the first with eight apical areas, basal cell a 

 little longer than broad. 



Type, A. colombi'ce, Dist. (^Tympanoterpes). 



Ariasa nigrovittata, sp. n. 



? . Body above black ; head with basal margin and a 

 longitudinal fascia to front, lateral and apical margins of 

 vertex, and an oblique fascia extending from posterior margins 

 of eyes to near ocelli, ochraceous ; pronotum with the ante- 

 rior margin narrowly, the lateral and posterior margins 

 broadly, ochraceous, each lateral area somewhat castaneous, 

 the posterior angles black ; mesonotum with two obconical 

 spots, the margins of which are pale castaneous, a lateral 

 fascia and the cruciform elevation of the same colour, the 

 anterior prolongations of the last more or less shaded with 



