JAMES A. G. REHX 331 



the body length, of the form usual in the genus, greatest depth contained four 

 and one-half times in the greatest length, suhcomi)ressed, dorsal margin 

 markedly serrulate, genicular lobes acuminate: caudal tibiae sUghtly shorter 

 than the femora, armed on the external margin with eleven to twelve spines, 

 on the internal margin with ten spines, those of the internal margin appreci- 

 ably longer than those of the external margin; internal spurs with the ventral 

 one and one-half times as long as the dorsal one, external spurs smaller, sub- 

 equal. 



General coloration ranging from drcsden brown frosted with ochraceous- 

 tawny and warm buff (paratype) to ochraceous-tawny passing on the pronotum, 

 pleura, tegmina and caudal femora to ferruginous (tawny). Pronotum with 

 the medium and lateral carinae as well as the margins of the lateral lobes 

 edged with ochraceous-buff. Eyes chestnut. Tegmina with a single well- 

 marked transverse figure at the proximal fourth, this made up of one or two 

 large figures in the discoidal field and a smaller but sharply defined dot in the 

 marginal field, distad of this group regular and obUque transverse bars are 

 weakly indicated. Wings with the disk of radiate field pale spectrum red 

 (paratype) to jasper red (type), this also present as a wash on the proximal 

 half of the anterior field and faintly so on the same section of the axillary 

 field, band of fuscous not wide but regularly arcuate, reaching to the proximal 

 section of the peripheral margin, the spur well indicated and extending nearly 

 to the base of the wing, but the infuscation is there weakened; distal section of 

 the wing infuscate (paratype) or subhyaline (type). Caudal tibiae wood brown 

 to army brown, the spines naples yellow to mustard yellow and black tipped. 



Measurements (in millimeters) 



Length of Length of Greatest Length of Length of 



body pronotum width of tegmen caudal 



9pronotal femur 

 disk 



'ElFe\6n,type 56 19.7 10.1 42 32..") 



Guanacaste, paratype .. . 54.9 19.4 10 41 32 



In addition to the type we have a female individual, labelled 

 simply "Guanacaste," Costa Rica (January, 1915; A. Alfaro), 

 which we consider paratypic. This specimen shows no features 

 of difference from the type, excepting those of color mentioned 

 above and the presence of as many as eleven spines on the internal 

 margin of the caudal tibiae. 



Cosdneuta matensis new species (PI. XVIII, figs. 9, 10 and 11; ])1. XX, 



fis. 2.) 



Closely related to C. sordida Rehn,'' from north-eastern Brazil, 

 but differing in the more decided scrobiciilation of the genae, 

 pronotum and pleura, in the proportionately broader and shorter 

 tegmina, in the produced and more attenuate ovipositor jaws of 

 the female, these being straighter, blunter and with the usual 



TRANS. AM. ENT. SOC, XLIV. 



