CEECEEIS. 115 



tures. Hypopygium aciculate ; a small triangular incision at the apex, with a 

 clearly-defined raised border ; behind this it is depressed. The abdomen is more than 

 twice the length of the thorax. The inner orbits of the eyes broadly, the centre of 

 the clypeus, the scape beneath, the pronotum above, the scutellum, the metanotum, 

 the greater part of the median segment, a line down the side, the petiole, and a band 

 on the third segment, clear yellow. The anterior four tibiae and tarsi, a line on the 

 femora in front, and the spurs obscure yellow ; the knees testaceous ; the tarsal spines 

 fulvous. Wings fusco-hy aline, the apex smoky, the stigma dark fuscous ; cubitus elon- 

 gate, the recurrent nervure received quite close to the middle. 



^ 11. Cerceris flavo-maculata, (Tab. VII. fig. 9, $ .) 



Clypei media pars convexa, margine apieali depresso ; oculorum margines interni paralleli ; area cordiformis 

 punctata, laterali rugosa ; nigra, clypeo, oculorum margines, scutelli maculis duabus, metanoto, segmento 

 mediali maculis 4, apice petioli et segmento 3°, flavis ; alis fere hyalinis, antice fusco-fumato. $ . 



Long. 7 millim. 



Hab. Costa Rica, Eio Sucio, Cache {Bogers). 



Eyes nearly parallel. Ocelli almost in a triangle ; the posterior pair separated from 

 the eyes by a little more than the length of the third antennal joint, and by nearly the 

 same length from each other. Third antennal joint nearly one half the length of the 

 fourth. Clypeus broadly convex, projecting gradually to the apex, which projects 

 obliquely over the labium. Head above the antennas rugosely punctured ; below it 

 aciculate, marked with scattered punctures. Thorax rugosely punctured ; the punctures 

 on the median segment large and deep ; the heart-shaped area rugosely striolate laterally, 

 the centre aciculate, and with a narrow not very distinct central furrow ; scutellum 

 convex. Mesopleural furrow not very distinct ; propleura aciculate, hollowed, with a 

 few striae in the centre ; the hollow on the metapleurae wide and deep, slightly aciculate. 

 Median segment with a gradual rounded slope. Abdomen not much longer than the 

 head and thorax united, strongly punctured throughout. Pygidial area straight ; 

 aciculate, the base with a few large punctures ; hollowed towards the apex ; slightly 

 narrowed at the base ; the apex almost transverse. Hypopygium with the incision 

 extending to the basal third ; sharply triangular at the base. The clypeus, the inner 

 orbits of the eyes, the scape beneath, a small mark behind the eyes, a broad interrupted 

 line on the pronotum, a mark on either side of the scutellum, the metanotum, an 

 oblique mark on either side of the apex of the heart-shaped area, a stripe down the side 

 of the median segment, the sides and the greater part of the petiole above, a narrow 

 band on the third segment, a much narrower one on the apex of the fourth and fifth 

 segments, and the second and third ventral segments at the apex, clear yellow ; the 

 greater part of the pygidial area fulvous. All the femora at the apex, the tibiae in 

 front, and the anterior four tarsi in front, white ; the spurs and spines pale testaceous. 



qq2 



