SYNTAMES. 139 
Elongate-parallel, with the vertex rectangular or very slightly narrowed in front, a little longer than broad, 
distinctly produced before the eyes, the front margin straight; forehead and clypeus together very long 
and narrow, distinctly margined, with a clear central keel, which is interrupted at the junction, and is 
continued more strongly on the clypeus; rostrum long; pronotum very short, longer at tke sides; 
scutellum large, convex, depressed behind, almost smooth, or with more or less faint carine; tegmina 
long, declivous, almost perpendicular at rest, with the principal veins joined before the base, the radial 
and interior ulnar forked at about the middle, the exterior ulnar vein forked behind the middle; claval 
suture indistinct; claval vein bifurcate at about the middle, with a fine vein crossing the suture and 
joining the stalk just behind the bifurcation ; posterior tibie without spines. 
1. Syntames delicatus, sp.n. (Tab. XIII. figg. 21, 21a, 3, 3.) 
Dilute testaceus, tegminibus venis plus minusve colore fusco notatis, vel vitté obliqua transcurrente, vel fere 
unicolori ; scutello unicolori, vel ad latera obscuriori ; tegminibus longis, parallelis ; alis lacteis; pedibus 
- longis, albido-testaceis. 
Mas segmento ultimo ventrali truncato, postice lamina magna fere circulari vel subquadratim rotundata, laminis 
lateralibus fortiter utrinque dentatis; stylis magnis, subtriangularibus *. 
Femina segmento ultimo ventrali processu parvo ad medium instructo, 
Of a light testaceous colour, with the veins of the tegmina and the sides of the pronotum sometimes infuscate, 
or with the tegmina almost unicolorous or marked with a distinct oblique dark band ; tegmina subparallel ; 
antennee not conspicuous, with the second joint much longer than the first; eyes dark, strongly emargi- 
nate; ocelli small; legs long and slender. , 
Male with the last ventral segment of the abdomen truncate, with a large, almost semicircular or subquadrate 
plate behind, with lateral plates on each side, furnished with a long straight tooth; styles large, 
subtriangular. 
Female with the last abdominal segment furnished with a short process in the middle, and with the sides of 
the pygofer next the dark-coloured ovipositor irregular. 
Long. cum tegm. 8 millim.; lat. ad hum. 2 millim. (¢ 9.) 
Hab. GuateMata, Senahu in Vera Paz (Champion); Panama, David, Volcan de 
Chiriqui (Champion). 
Var. chiriquensis, n. (Tab; XIII. fig. 22.) 
Minor, vertice antice paullo angustiori; scutello carinis plus minusve distinctis, et colore tegminum testaceo, 
disco albido, vittis duabus latis rectis a basi usque ad apicem extensis, macula pone medium ad suturam 
rufesceuti, et dentibus laminarum lateralium maris minus validis. 
Smaller, with the vertex slightly narrower towards the front; scutellum with the keels, especially the central 
one, more or less distinct ; tegmina with the disc and two longitudinal bands, one on each side, broadly 
white; behind the middle, at the suture, is a small reddish patch; the teeth of the side-plates of the 
male are less strong. 
Long. cum tegm. 7 millim.; lat. ad hum. 13-2 millim.. 
Hab. Panama, Volcan de Chiriqui (Champion). 
There is also in our collection a single specimen of a species belonging to this or an 
allied genus from Cerro Zunil, Guatemala. 
* These styles appear to be more or less contiguous and sometimes present the appearance of a single plate, 
but after examining two or three male specimens under a high power they are evidently separate, and must, 
I think, be regarded as the styles, although it is quite possible that I may be mistaken; the species are so 
delicate that these parts are usually more or less shrivelled—at any rate, as far as their surroundings are 
concerned. 
