ALDRICH : DOI.U HOI'US AND HVGROCELEUTHUS. ^ 



Male fore tibiix.' not incrassated at tip vigilans, n. sp. 



49. Middle tarsi of male with long hairs above on first joint. . . . 



coinatits, Loew. 



Middle tarsi plain 50 



50. Fore coxai pale 51 



Fore coxa; dark 56 



51. Blackish-bronze species ; size 3 mm brunneus, n. sp. 



More or less green species, much larger 52 



52. Fore tarsi of male plain 53 



Fore tarsi of male enlarged disci/er, Stannius. 



53. Antennae entirely black melanocerus, Loew. 



First joint reddish below 54 



54. Length about 6 mm. ; hind tibiai of male with longer bristles 



than usual setosus, Loew. 



Length about 4 mm. ; hind tibia; as usual 55 



55. Basal half of fore coxae with minute whitish hairs 



platyprosopus, Loew. 



Basal half of fore coxa; with minute black hairs. incisuraIis,'L.OQVf. 



56. Fore tarsi of male plain p>\eustus, Loew. 



Fore tarsi of male enlarged 57 



57. First three joints of male fore tarsi with black tips 



; pollex, Osten Sacken. 



First three joints of male fore tarsi wholly yellow. cV'^7-';v/(?/'//y,n.sp. 



58. Hind tarsi entirely black 59 



Hind tarsi considerably pale at base 65 



59. Third joint of antennre almost entirely yellow. . . .graii/is, n. sp. 

 Third joint largely or wholly black 60 



60. Third joint of antennae large and pointed ; wings narrowed 



at base angustatus, n. sp. 



Third joint and wings as usual 61 



61. Male fore tarsi enlarged 62 



Male fore tarsi not enlarged 64 



62. Anal angle of wing in male with two lobes lobatus, Loew. 



Anal angle as usual 63 



63. First joint of antenn;>; chiefly or wholly black. . ^/^j\'//<;'/', Stannius. 



First joint yellow, the following black agilis, n. sp. 



Whole antenna yellow e.vcept apical half of third joint.. . 



pugil, Loew. 



64. Lamella; of hypopygium with numerous long, black bristles 



tnargitiatus, n. sp. 



Lamella; of liypopygium with the usual short, curved bris- 

 tles fulvipes, Loew. 



65 Third joint of antenna; black 66 



