CEABEO. 143 



Front excavated ; its furrow hardly differentiated from the depression ; smooth and 

 shining. Cheeks regular. Vertex not depressed ; the ocelli in a curve, separated by 

 a somewhat less distance from each other than they are from the eyes — by a little more 

 than the length of the third antennal joint. Clypeus projecting at the apex, not 

 keeled down the centre. The punctuation of the head is close, uniform, and rather 

 coarse ; the vertex bears long blackish hair ; the cheeks and the outer orbits of the 

 eyes have a dense silvery-golden pubescence ; the clypeus is covered with long silvery 

 hair. The scape of the antennae is yellow beneath ; the flagellum has a pale micro- 

 scopic pile ; the third joint is more than one-third longer than the fourth. Pronotum 

 hardly transverse, forming a slight curve, the edges rounded. Mesonotum coarsely 

 rugose, the furrows narrow, nearly hidden by the coarse sculpture ; the scutellum 

 convex, more shining than the mesonotum, and with large clearly separated punctures ; 

 upper half of the mesopleurae strongly longitudinally striolated, the lower half and the 

 sternum coarsely punctured. Metanotum with an indistinct punctuation. Median 

 segment at the base rugosely punctured ; the median area narrow, V-shaped ; the apex 

 oblique, transversely striolated ; the furrow wide and deep. Metapleurae finely and 

 closely longitudinally striated. The pubescence is sparse and blackish ; on the 

 median segment long and pale. Abdomen shining ; the basal segment bearing large, 

 distinctly separated, rugose punctures ; the second segment is less strongly punctured, 

 the others much more finely ; the base and apex of the segments smooth and 

 impunctate. The pubescence on the sides, base, and apex of the abdomen is silvery- 

 white. Legs covered with silvery hair ; the tarsi with a fulvous pile ; tibiae but 

 moderately spinose ; the long spur of the hind tibiae reaches almost to the middle of 

 the metatarsus, and is twice the length of the second tarsal joint ; the third and 

 fourth hind tarsal joints are subequal. The transverse cubital nervure is received a 

 little before the middle of the radial cellule. An interrupted line on the pronotum, 

 the tubercles, a spot on either side of the base of the scutellum, the metanotum, the 

 middle femora beneath, two lines on the hind tibiae behind, and the calcaria, clear 

 yellow. The basal four segments of the abdomen with a reddish -yellow line on each 

 side, becoming wider to the fourth ; the other segments with a complete belt of 

 obscure reddish-yellow. 



3. Crabro atitlanae. (Tab. IX. fig. 3, $ .) 



Niger, crebre punctatus ; linea pronoti, maculis 2 scutelli, metanoto, linea tibiarum maculisque 10 abdominis 



flavis ; abdomine punctata ; alis hyalinis, nervis nigris. $ . 

 Long. 6 millim. 



Hab. Guatemala, Volcan de Atitlan 2500 to 3500 feet (Champion). 



Head densely covered with a silvery-white pile ; the clypeus with a silvery depressed 

 pile. Front and vertex rugosely punctured. Clypeus convex, stoutly carinate down 

 the centre. Ocelli in a curve, separated by a less distance from each other than they 



