564 Mr. T. D. A. Cockerell — Descriptions and 



patch of dense white tomentum on the apical part posteriorly ; 

 hind ba.sitarsi with a fringe of white hair on both sides ; 

 small joints of hind tarsi with some short red hair on inner 

 side. Abdomen rather narrow, smooth and shining, strongly 

 but not very densely punctured, without hair-bands, but 

 segments 4 and 5 have a subapical fringe of scattered pale 

 hairs, appearing more or less as bands in some lights ; 

 venter, especially at sides, with long, shining, white hair; 

 apex broadly truncate, fringed with white hair, and tri- 

 dentate, with a slender median tooth, and a larger one at 

 each lateral corner ; on the ventral surface, in front of each 

 lateral apical tooth, is a large hook-like tooth. No distinct 

 pulvilli. 



Hub. Guatemala {Juan Rodiguez). 



Mr. Rodriguez kindly gave a specimen to my wife when 

 she visited him in Guatemala City. This is a most re- 

 markable species, and when I first saw it I took it for a 

 large Asilid fly of the Laphria type. I do not know any 

 species to whicli it is closely related, but the armature of the 

 seventh abdominal segment is not unlike that of A. mani- 

 catam (L.). The sixth segment, however, is simple, without 

 lateral spines. 



Collet es motaguensis, sp. u. 



$ . — Length about 11 mm. 



Black ; abdomen rather narrow ; hair of head and thorax 

 greyish white and black, with the faintest creamy tint on 

 face, but nowhere ochreous or fulvous ; head broad ; clypeus 

 shining, with very dense and strong punctures running into 

 strise, lower margin undulate in middle ; labrum with a long, 

 almost linear, central pit, and a groove on each side of the 

 pit-bearing eminence; malar space rather short, but not 

 twice as broad as long ; sculpture of vertex fine and indis- 

 tinct, but the inner orbital raised line leaves the eye on the 

 vertex, and continues halfway toward the lateral ocellus ; 

 antenuffi short, the flagellum ferruginous beneath except at 

 base ; hair of face and cheeks pale, except a few dark hairs 

 at sides of face below level of antennae ; vertex with a 

 moderate amount of long black hair; mesothorax strongly 

 and densely punctured, sparsely on posterior middle; 

 scutellum smooth anteriorly, but the greater part strongly 

 punctured ; pitted transverse band on metathorax very 

 narrow ; prothoracic spines sharp and distinct ; hair of 

 mesothorax mixed black and greyish white, of scutello- 

 mcsothoracic suture all greyish white, forming a band, of 

 scutellum :dl black, but of postscutellum nearly all greyish 



