1922] NATURAL SCIENCES OF PHILADELPHIA 193 



tegmen 45.5, length of tegminal stridulating field 35.3, length of 

 stridulating vein 18.2, length of cephalic femur 15.6, length of 

 caudal femur 29.7, height of distal spine of caudal femur 1 mm. 



There is a possibility that the Bornean material, recorded as 

 C. rex ( = titan) by Brunner, represents this species and that the 

 maximum measurements there given for the female sex apply to 

 that specimen. 



The type of this huge Pseudophyllid is unique. So great is the 



stridulating development that the sound which the males produce 



must be almost deafening. 



Onomarchis leuconotus (Serville) 



1839. Pseudophyllus leuconotus Serville, Hist. Nat. Ins., Orth., p. 469. 

 [d 1 , Java.] 



Los Baiios, Laguna, Luzon, Phillipine Islands, (from C. F. 

 Baker), 1 cf • 



Butuan, Mindanao, Philippine Islands, (from C. F. Baker), 1 9 . 



Labuan, British North Borneo, 2 9 . 



Island of Penang, British Straits Settlements, (from C. F. Baker). 



1 d". 



Toungoo, Burma, (A. V. B. Crumb), 1 <?, [A. N. S. P.]. 



Brunner, stating that the tegminal width is subject to consider- 

 able individual variation in this apparently common species, 

 established three synonyms, to which Kirby has added one. 



The form of the tegmina gives to the females a distinctive and 

 hump-backed appearance. 



The Butuan specimen shows a strikingly beautiful color form, 

 in which the delicate green of the tegmina gives place in the areolae 

 to extensive suffusions of lavender. 



HAPALOPHTLLUM new genus 



This genus is erected to include the single species described as 

 Brunnea vrazi by Bolivar. This insect, it is true, runs to Brunnea 

 in Brunner's key, but shows the following important differences. 56 



Size medium, form moderately slender, resembling rather the 

 more delicate species than those of the genus Pseudophyllus, to 

 which latter Brunnea cincticollis Brunner shows a close superficial 

 resemblance in size and contour. Pronotum supplied with blunt 

 tubercles which are found also on the ventro-cephalic margin of 

 the lateral lobes, the latter with ventral margin horizontal and 

 broadly convex, the caudal margin cutting back to the deeply 



56 Comparison is made with a specimen of Brunnea cinciic ollis belonging to the 

 United States National Museum. That specimen will be discussed at a later 

 date by Mr. Rehn. 



