372 The Philippine Journal of Science i9i5 



Philippine Islands (Westwood, Walker, Stal, Buckton) ; LUZON, 

 Los Banos, Mount Banahao {Baker). 



Genus PYRGONOTA Stal 



Centrotus Fabr. (in part) ; Smilia Germ, (in part) ; Hypsauchenia 

 Germ, (in part). 



Pyrgonota, according to its author, is to be separated from the 

 old genus Hypsauchenia of Germar chiefly by the lack of a dorsal 

 lobe on the posterior process. Schmidt ^ does not recognize this 

 as a generic distinction, and it is indeed doubtful whether the 

 genus will stand as new species are added. For the present, 

 however, since the Philippine forms may be thus arbitrarily 

 grouped, it seems desirable to accept the genus tentatively for 

 the sake of convenience. 



Stal designates no type species, but the logical choice falls on 

 P. bifoliata Westw., both on account of its abundance — all of the 

 other species are apparently rare — and because it has long been 

 known and figured in literature. All of the species of this genus 

 are native to the Islands. 



The following key, adapted from that of Stal, will enable the 

 student to separate the species: 



Key to the species of Pyrgonota. 



a^. Posterior process of thorax without lateral carinas. 

 b\ Posterior process uniformly colored. 



c^. Posterior process depressed and gradually slender behind middle. 



cT. Anterior process ridged; tegmina with pale spot tumida. 



(P. Anterior process not ridged; tegmina concolorous.... pinguiturris. 



c'. Posterior process acutely tectiform behind middle pMlippina. 



6^ Posterior process with large pale spot before middle bifoliata. 



a^ Posterior process of thorax with lateral carinas. 



6*. Posterior process gradually acuminate and concolorous bifuroa. 



b^. Posterior process higher behind than before the middle; marked with 

 a pale spot semperi. 



Pyrgonota bifoliata Westw. Plate I, fig. 2. 



Centrotus bifoliatus Westw., Proc. Zool. Soc. (1837), 130. 



Smilia bifoliata Westw., Guer. Mag. Zool. (1841), II, 3, PI. 88; 



Lefebvre, Bull. Ann. Soc. Fr. (1842), 21. 

 Hypsauchenia westwoodi Fairm., Rev. Memb. (1846), 521, PI. 7, 



figs. 6-8; Walk., List Horn. Brit. Mus. (1851), 631; Buckt., Mon. 



Memb. (1903), 211, PI. 46, figs. 6, 6a. 

 Hypsauchenia bifoliata Fairm., Rev. Memb. (1846), 521; Schmidt, 



Stett. Ent. Zeitg. (1906), 370. 

 Hypsauchenia bifasciata Walk., List Hom. Brit. Mus. (1851), 631. 

 Pyrgonota bifoliata Stal, Hem. Phil. (1870), 731; BucKT., Mon. Memb. 



(1903), 270; Funkh., Journ. Ent. & Zool. (1914), 6, 67. 



"Stett. ent. Zeitg. (1906), 67, 370. 



