ART. 3 ORTHOPTEROID INSECTS FROM JAVA CAUDELL 39 



PARALANDREVUS COULONIANUS Saussure 



Landrevus coulonianus Saussure, Mem. Soc. Geneve, vol. 25, 1877, p. 273, pi. 14 

 fig. xxv-1. 



One male, Mount Salak, April 4, at an altitude of 2,200 feet; one 

 female, Tjibodas, Mount Gede, April 20. 



The tegmina of the female are barely if any over 2 mm. in length 

 and noticeably broader than long; the posterior femora measure 12 

 mm. in each sex, and the ovipositor is curved upward and is about as 

 long as the posterior femora, or a little longer. The vertex of the 

 head in the male (head of the female missing) is not marked by four 

 lines as noted in the original description. 



Subfamily Oecanthinae 



PENTACENTRUS UNIFENESTRATUS, new species 



This species is distinguishable from the other members of the genus 

 by having the anterior tibiae with a tympanum on the inner side only. 



Description, male {female unknown ) . — Head yellowish brown with 

 the vertex marked by four longitudinal blackish stripes and the 

 eyes with the lower half darker; maxillary palpi brown, the apical 

 segment distally much expanded, the whole segment about twice as 

 long as the apical width; antennae missing except the basal portion, 

 the longer one about half as long as the body, pale and with some 

 black bands beyond the base. Pronotum moderately transverse, the 

 anterior margin truncate, the posterior margin obtusely angulate, the 

 disk with two longitudinal blackish stripes; lateral lobes about as 

 high as broad, the lower margins rather narrowly rounded and the 

 lateral margins subequally ascending. Abdomen elongate; sub- 

 genital plate broad as long, forming a large apically broadly rounded 

 scoop; supra-anal plate much narrower and shorter than the sub- 

 genital plate, about as long as broad and apically truncate for about 

 half its width; cerci long and slender, swollen at the base and beyond 

 tapering very gradually to a point. 



Legs rather stout, brownish in color with darker maculation, the 

 blackish markings tending to form obscure broad bands; anterior and 

 intermediate metatarsi longer than the other two tarsal segments 

 together, the posterior ones three or more times as long; anterior 

 tibiae noticeably expanded in the basal half and with a very large 

 open foramen on the inner surface, occupying the greater part of the 

 width and one-half the length of the tibia, the outer surface somewhat 

 swollen but without a trace of any tympanum; posterior tibiae bear 

 three spines on each dorsal margin in addition to four or five very 

 small serrations and two long apical calcars on the inner side, the 

 upper one slightly the shorter, and three shorter ones on the outer 

 side, the middle one about twice as long as the others, which are 

 subequal with each other in length; posterior femora swollen for most 

 their length, tapering to their tips, and unarmed. 



