10 HYMENOPTEKA. 



f 



11. Ammophila striolata. 



Nigra, brevifcer sericeo-villosa ; pro-, meso- et metanoto transverse striolatis ; scutello longitudinaliter striolato ; 



clypeo dense fulvo-villoso, apice transverso ; abdomine rufo, apice nigro ; alis fusco-hyalinis. § . 

 Long. 24 millim. 



Hah. Mexico, Ventanas in Durango 2000 feet (Forrer). 



The pubescence on the head is very close and dense all over, but sparsest in the 

 centre of the vertex. The vertex is broadly and deeply depressed in the middle above 

 the antennae. Clypeus obliquely depressed at the apical half, the apex itself almost 

 depressed. Third antennal joint twice the length of the fourth. Collar elongate, 

 broadly obliquely furrowed laterally. The pubescence on the thorax is dense, forming 

 two oblique silvery stripes on the pleurae, the posterior stripe being united to the silvery 

 patch on the apex of the middle segment. The top of the pronotum bears thick 

 patches of pubescence at the base and apex. The striolation on the pro- and meso- 

 notum is strong and close ; on the metanotum it is finer, closer, and oblique ; on the 

 scutellum it is still stronger and coarser. The mesopleurse are strongly punctured ; 

 a curved furrow runs down from either side of the tegulae. There is a shallow furrow 

 in the centre of the mesonotum ; the metanotum is depressed in the middle. Abdomen 

 elongated, pruinose. Legs densely pruinose. At the top the second cubital cellule is 

 as wide as the space bounded by the first transverse cubital and first recurrent nervures, 

 and nearly one fourth longer than the top of the third cellule ; the latter is narrower 

 at the top than at the bottom, and considerably dilated on the lower half. 



ff Mesothor ax punctured. (Species 12-25.) 

 * Petiole Mack. (Species 12-23.) 



12. Ammophila alticola. (A. chiriquensis, Tab. I. fig. 9 a, 6 .) 



Nigra, apice petioli abdominisqne segmento 1° lateribus runs; dense punctata et argenteo-villosa, scutello rugoso- 

 striato, metanoto transverse rugoso ; clypeo dense aureo-villoso, apice fere transverso ; alis fusco-hyalinis. 



6. 

 Long. 24 millim. 



Hah. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 



A long narrow insect. The pubescence on the thorax is long and dense, and forms 

 a conspicuous oblique stripe down the apex of the mesopleura, the usual hirsute spots 

 being also distinctly visible. The hair on the top of the head is long and moderately 

 dense, and the front and vertex are closely, but not deeply, punctured. The clypeus 

 is produced, but broadly transverse at the apex ; the sides are rounded. Ocelli nearly 

 in a triangle. Third antennal joint hardly one quarter longer than the fourth. Collar 

 moderately long; the sides with two oblique depressions, the upper depression the 

 shortest and semioblique. Thorax closely and distinctly punctured, almost transversely 

 punctured in the middle of the mesonotum ; the latter has a narrow furrow down its 



