102 Mr. F. Smith on new Species 



Genus Crabro, Fabr. 

 Crabro nasicornis. 



Female. Length 3-3 £ lines. Black, with yellow markings ; 

 the clypeus covered with bright silvery pubescence, and having 

 an acute tooth in the middle of its anterior margin. Head 

 large, subquadrate, and a little wider than the thorax ; the 

 cheeks covered with silvery pile ; the scape of the antennae 

 bright yellow ; the mandibles yellowish white. Thorax : the 

 collar, tubercles, an ovate spot on each side of the scutellum 

 at its base, and another which is united to it at its side, yellow ; 

 the wings hyaline and iridescent ; the nervures black ; the 

 tegulae honey-yellow ; the coxae and femora beneath yellowish 

 white ; the tibiae paie ferruginous ; the tarsi whitish ; the 

 femora above, and the intermediate and posterior tibiae outside, 

 rufo-piceous, sometimes blackish. Abdomen : the apical 

 margins of the segments narrowly rufo-piceous ; the basal 

 margins have on each side a yellow fascia, which widens into 

 a large macula at the extreme lateral margins ; the apical seg- 

 ment canaliculated and bright ferruginous ; beneath, the second 

 segment is usually almost entirely yellow, and the third has 

 two pale yellow spots ; the markings beneath are variable in 

 the three examples examined, as is also the colouring of the 

 legs in its intensity. 



Hob. Egaj St. Paulo. 



Crabro pugnans. 



Female. Length 2j lines. Black ; head and thorax marked 

 and spotted with yellow. The scape of the antennae, the palpi, 

 and mandibles yellow ; the flagellum fulvous ; the clypeus 

 covered with bright silvery pubescence ; a longitudinal groove 

 along the outer margins of the eyes, which is filled with silvery 

 pubescence. Thorax : the collar, tubercles, an ovate spot at 

 the lateral angles of the base of the scutellum, two curved lines 

 on the metathorax laterally, immediately behind the insertion 

 of the wings, yellow ; the metathorax coarsely rugose ; the 

 mesothorax shining, and finely and closely punctured ; wings 

 subhyaline, iridescent, and with the nervures black ; the tibiae 

 and tarsi yellow. Abdomen smooth and shining; the fifth 

 segment with a fine cinereous pile ; the apical segment fer- 

 ruginous. 



Hab. Para. 



Crabro megacephala. 



Female. Length 2\ lines. Black ; head very large, rather 

 wider than the thorax, and oblong- quadrate. Head : the scape 



