18 HYMENOPTEEA. 



than twice the length of the fourth. Pronotum with an indistinct shallow curved 

 furrow. The thorax is finely rugose and opaque, and bears a pile very similar to 

 that of the head and has some short scattered hairs ; on either side of the metanotum 

 at the apex is a tuft of golden pile ; the scutellum bears some coarse longitudinal 

 striations ; postscutellum rugose ; metanotum transversely striated, depressed in the 

 middle ; there are no furrows on the pro- and mesonotum ; a curved furrow runs down 

 from the tegulse. Tibiae sparsely, the tarsi densely, spinose, and, like the femora 

 and coxae, bear a hoary pile. The second cubital cellule is about one half wider 

 than the third, and its top is scarcely one half the length of the bottom ; the first 

 recurrent nervure is received very little before the middle of the cellule ; the third 

 cubital cellule is at the top rather more than one half the length of the bottom ; the 

 third transverse cubital nervure on the lower side curves towards the apex of the wing, 

 and then about one third from the bottom curves towards the base. 



J 25. Ammophila chiriquensis. (Tab. I. fig. 9, $ *.) 



Nigra, aureo-pubescens et fusco-pilosa, sparse punctata ; metathorace transverse striato ; clypeo truncato ; 



petiolo abdominis segmentisque 2° et 3° runs ; alis fere fuscis, apice fumatis. $ . 

 Long. 23 millim. 



Eab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 



Head broader than the mesothorax; the face densely clothed with golden, the 

 vertex with a thin short silvery, pubescence ; sparsely covered with a longish fuscous 

 or pale silvery hair. Front and vertex obsoletely punctured ; front deeply depressed in 

 the centre, a furrow in the middle, originating at the ocelli which are surrounded by 

 a furrow ; ocelli placed nearly in a triangle. Clypeus with a few large scattered 

 punctures, truncated in the middle, slightly retreating, the furrow deep, wide, and 

 uneven. Third antennal joint twice the length of the fourth. Pronotum with a 

 )-shaped furrow, the lower part of which is much wider and deeper than the upper. 

 Thorax finely and sparsely punctured ; scutellum coarsely longitudinally striated ; 

 metanotum finely and closely transversely striated. The prothorax above the tubercles, 

 a broad oblique band on the meso- and metapleuree, and a spot on either side of the 

 metanotum, covered with golden pubescence ; the rest of the thorax bears a short 

 silvery pile and has sparse greyish hair. The central furrow on the mesonotum is 

 broad and indistinct, that on the prothorax is almost obsolete ; a narrow keel runs 

 down from the tegulae. The second joint of the petiole is much thicker than the 

 basal joint, and like it is finely longitudinally aciculated ; the second joint is for the 

 greater part black on the top. 



* The genital organs figured on Tab. I. fig. 9 a do not belong to tbe male of this species, but to that of 

 A. altieola. 



