212 HYMENOPTEKA. 



about the same distance they are from the eyes ; clypeus with the sides oblique, the 

 apex transverse. Prothorax as long as the head, the apex rounded ; the median seg- 

 ment gradually rounded to the apex, which is oblique, with a large fl-shaped hollow 

 in the middle, this hollow being for the greater part black. Abdomen shorter than 

 the head and thorax, the apex hardly pilose. The fore legs without spines ; the long 

 spur of the hind tibiae reaching a little beyond the middle of the metatarsus. 



Two specimens from Orizaba (SalM), from which the above characters are taken, 

 doubtless belong to this species. 



An example from Temax has the mesonotum in front and the median segment above 

 black, the hind tarsi also from the middle of the metatarsus being black. Another 

 example from North Yucatan has the wings lacteous. 



In the male the antennas are stout, not tapering much towards the apex, the third 

 and fourth joints subequal. 



J 65. Pompilus algidus. 



Pompilus algidus, Smith, Cat. Hymen. Ins. iii. p. 158 1 ; Cresson, Trans. Am. Ent. Soc. i. p. 101 2 ; 

 Proc. Bost. Soc. Nat. Hist. xii. p. 371 3 . 



Hab. Noeth Ameeica, W. Virginia and Georgia 2 . — Mexico, Orizaba (Sumichrast 3 ). 



NOTOCYPHUS. 



ot vcyphus, Smith, Cat. Hymen. Ins, iii. p. 172 (1855) ; Kohl, Verh. zool.-bot. Ges. Wien, xxxiv. 

 p. 50. 



v l. Notocyphus plagiatus. 



Notocyphus plagiatus, Smith, Journ. Ent. i. p. 398 l ; Cresson, Trans. Am. Ent. Soc. i. p. 134 \ 

 Hab. Mexico 2 (Mus. Brit. 1 ). 



v 2. Notocyphus albopictus. 



Notocyphus albopictus, Smith, Journ, Ent. i, p. 398 l ; Cresson, Trans. Am. Ent. Soc. i. p. 134 2 . 

 Hab. Mexico 2 (Mus. Brit. 1 ). 



3. Notocyphus apicalis. 



Niger, abdominis apice rufo ; alis fuliginosis. 

 Long, fere 9 millim. 



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



Eyes very slightly converging beneath ; the ocelli in a triangle, the hinder ones 

 separated from each other by about the same distance they are from the eyes ; apex of 

 the clypeus almost transverse; a furrow, widest at the top, above the antennae. 

 Antennas stout, involute, the third joint distinctly longer than the fourth. Prothorax 



