CEECEEIS. 125 



joint not much longer than the fourth and about two-thirds longer than the second. 

 Head coarsely, rugosely punctured ; the face with a finer punctuation ; the middle of 

 the clypeus at the apex impunctate. Thorax coarsely, rugosely punctured, the pleurae 

 not so coarsely ; median segment short, with a gradual slope to the apex, the middle 

 with a broad smooth furrow ; the heart-shaped area rugosely punctured laterally, the 

 centre^smooth and furrowed. Abdomen rugosely punctured, the punctures large ; the 

 depressed band at the apex of the segments sericeous, aciculate. Pygidial area a little 

 longer than broad, shield-shaped, the sides rounded and bulging out ; the apex almost 

 truncated, slightly projecting at the corners ; the base rounded. Ventral surface punc- 

 tured ; the apex of the penultimate segment projecting at the tip. The scape entirely 

 and the flagellum of the antennae beneath are rufous. The clypeus, the cheeks, the 

 inner orbits of the eyes (the sides of the clypeus above are bordered with black), the 

 antennal tubercle at the apex, a small spot on the vertex behind the eyes, two lines on 

 the pronotum, two marks on the scutellum, the metanotum, a broad line on the edges 

 of the median segment, a line on either side of the petiole, a band on the apex of the 

 abdominal segments, and the pygidial area (entirely), yellow. The greater part of the 

 hinder coxae and trochanters, a line on the femora, the knees, tibiae (except a black 

 line behind), and tarsi and spurs, yellow ; the spines white. 



30. Cerceris azteca. (Tab. VIII. figg. 5, head ; 5 a, clypeus ; 5 b, pygidium ; 

 5 c, hypopygium.) 

 Cerceris azteca, Saussure, Eeise d. Novara, Hymen, p. 97 ( ? ). 



Hab. Mexico {coll. Saussure), Orizaba 1 , Yautepec \ Cuautla 1 . 



This is a smaller species than C. tepaneca, and may be known from it by the incised 

 middle of the clypeus, the smooth heart-shaped area, the two marks on the scu- 

 tellum, the apex of the petiole marked with yellow, the lighter coloured wings, fuscous 

 stigma, &c. 



V 31. Cerceris tepaneca. (Tab. VIII. figg. 6, clypeus, 6; 60, head, Gb 8c 60, 



clypeus, $ .) 



Cerceris tepaneca, Saussure, Reise d. Novara, Hymen, p. 90 ( <$ ) \ 



Ha b. Mexico, Presidio de Mazatlan (Forrer), Orizaba 1 , Atoyac in Vera Cruz {H. H. 

 Smith). 



We give a renewed description of this species : — 



Clypei pars media fere convexa, libera, longis, margine laterali paralleli, margine apicali truncato ; oculorum 

 margines paralleli; area cordiformis opaca, striolata ; nigra, clypeo, oculorum marginibus, metanoto, 

 abdominis segmentis 2° et 3° apicibus, 4° et 5° fere totis, flavis ; pedibus rufo-fulvis, basi nigris ; alis flavo- 

 hyalinis, violaceis, costa stigmateque fulvis. 



Long. 11 millim. 



