22 HYMENOPTEEA. 



apical segment are aciculated. The legs are covered with a silvery-white pile, which 

 is especially long and thick on the coxa? ; the four anterior femora are black to the 

 middle; the middle tarsi are fuscous towards the apex; the hind legs are entirely 

 black, except the calcaria, which are red ; the spines on the tarsi are sparse. Above 

 the second cubital cellule is about one third longer than the third, and scarcely so long 

 as the space between the first and second recurrent nervures ; the second recurrent 

 nervure is received quite close to the second transverse cubital nervure; the third 

 cubital cellule is about one third longer above than below. 



34. Ammophila piceiventris. (Tab. II. figg.7; 8, var.) 



Nigra, punctata, longe nigro-pilosa, tegulis abdomineque piceis ; alis violaceis. $ . 

 Long. 19 millim. 



Hah. Guatemala, Quezaltenango 7800 feet [Champion). 



The puncturing on the clypeus, face, and front close and strong, as also on the thorax ; 

 central part of the metanotum opaque, closely transversely punctured; metapleurae 

 strongly and coarsely punctured, running into reticulations; sides of the prothorax 

 strongly obliquely striolated; scutellum strongly punctured laterally, the centre with 

 some longitudinal striae. Clypeus convex in the centre, the apex depressed at the base, 

 almost transverse. Eyes parallel. Mandibles broadly piceous-red at the base. Third 

 antennal joint three quarters longer than the fourth. The hair on the thorax is long 

 and black ; there is no pile. Petiole about one fourth longer than the hind coxa?, 

 covered with long black hair, and sparsely punctured. Abdomen bare, the apex only 

 sparsely clothed with hair, punctured beneath ; penultimate segment beneath almost 

 transverse. Coxa? (especially the posterior pair) strongly punctured and covered with 

 long black hair ; trochanters and femora more sparsely clothed with hair ; tibiae pruinose 

 on the underside, sparsely spinose; tibia? thickly spinose. The base of the tibiae 

 and the tarsi incline to piceous, as does also the clypeus. First transverse cubital 

 nervure curved at the top ; second cubital cellule one third the length of the bottom 

 at the top, receiving the first recurrent nervure a little before the middle, the second 

 not far from the apex, the cubital nervure being considerably angled where it is 

 received; third transverse cubital nervure bent outwardly at the bottom, directed 

 towards the base at the top, thus making the cellule narrower at the top than at the 

 bottom. 



The piceous colour on the abdomen is marked with black patches ; the apical two 

 segments are for the greater part black. 



Other examples from Totonicapam, 8500 to 10,500 feet, are probably referable to 

 the same species, but difler in being smaller (averaging 13 millim.), and deep black in 

 colour without any trace of piceous or reddish coloration. This form shows variation 

 in the intensity of the sculpture and in the shape of the second and third cubital 

 cellules. 



