262 PROCEEDINGS OF THE ACADEMY OF [May, 



RECORDS AND DESCRIPTIONS OF NON-SALTATORIAL ORTHOPTERA FROM 

 BRITISH GUIANA. 



BY JAMES A. G. REHN. 



The records given in the following pages are all from a collection of 

 Orthoptera made in 1901 at Demerara, British Guiana, by R, J. Crew, 

 and for the privilege of studying which the author is indebted to Prof. 

 Lawrence Bruner. The series contained sixty-one specimens, repre- 

 senting thirty-four species, of which six are new. The types are in 

 Prof. Bruner's collection. 



BLATTID^. 

 ANAPLECTA Burmeister. 

 Anaplecta pulchella n. sp. 



Type: 9 ; Demerara, British Guiana, 1901. (R. J. Crew.) 

 Closely allied to A. mexicana Saussure and dohrniana Saussure and 

 Zehntner, but differing from mexicana in the narrowly incised supra- 

 anal plate, the more angulate proximal portion of the appendicular 

 field of the wings, and in some details of the coloration. From dohr- 

 niana it differs in the wings, in the coloration and somewhat in the 

 shape, but agrees in the shape of the supra-anal plate. 



Size rather large (for the genus); form rather flattened and sub- 

 elliptical; surface glabrous. Head about completely hidden under the 

 pronotum; interspace between the eyes almost twice the depth of one 

 of the eyes; antennse sparsely haired. Pronotum transversely ovate, 

 the cephalic margin regularly arcuate, caudal margin very slightly 

 arcuate, lateral margins rounded obtuse-angulate ; disk somewhat 

 deflected laterad. Tegmina exceeding the apex of the abdomen, sub- 

 lanceolate with the costal margin slightly arcuate except proximad 

 where it is rather strongly arcuate, sutural margin straight, apex acute; 

 basal field small, sub-coriaceous; anal field elongate sub-pyriform in 

 shape and containing four veins; costal veins thirteen in number, the 

 interspaces between the distal ones supplied with short spurious veins 

 which do not coalesce with the discoidal vein; median vein with four 

 rami of which the second (enumerating proximo-distad) is bifurcate. 

 Wings with the appendicular field of medium size, sub-rectangulate 

 with the margins rounded and the proximal angle decidedly obtuse : 



