610 PROCEEDINGS OF TUB XATIOyAL MVSEVil. vul. 44. 



Hahitat. — Hohtype.- — Male, Trece Aguas, Cacao, Alta Vera Paz, 

 Guatemala, April 23, 1906 (Barber and Schwarz, coll.). Para- 

 types. — Two, same locality and collector; April 27. 



Type.— In U. S. National Museum collection (No. 14929). 



Genus MOLOPHILUS Curtis. 



Molophilus Curtis, Britisli Entomology, 1833, p. 444. — Osten Sacken, Mono- 

 gi-aphs, vol. 4, 1869, p. 162. 



KEY TO THE NEOTROPICAL SPECIES OF MOLOPHILUS. 



1. Color black; fore and hind tibise with long fringes of liairs. 



thaumaslopodui, new species (Brazil). 

 Color light grayish-brown; tibise without conspicuous fringes of hairs. 



giiatemalensis, new species (Central America). 



MOLOPHILUS THAUMASTOPODUS, new species. 



Dull j^rcjash-black ; fore and bind tibias with long fringes of hair; 

 wings and halteres dark. 



Fema/e.^Length, 4.2 mm; wing, 4.1 mm.; fore leg, femur, 3 mm; 

 tibia and tarsus, 5 mm. ; middle leg, femur, 2.6 mm; tibia and tarsus, 

 3.7 mm.; hind leg, femur, 4.6 mm; tibia and tarsus, 6 mm.; head: 

 rostrum and palpi brownish-black; antennse dark brown, each seg- 

 ment somewhat paler at the base; antennae rather long, the seg- 

 ments oval, with long blackish hairs. Front, vertex and occiput 

 dull grayish-black. 



Thorax: dorsum dull grayish-black throughout; pseudosuture black. 

 Pleurae uniform dull blackish. Halteres black, light brown at the 

 base. Foreleg : coxae and trochanters 3^ellowish-brown ; femur brown, 

 paler on the basal half, slender basally, stout apically, with long 

 dark brown hairs apprcssed internally, subappressed externally, tibia 

 slender, dark, blackish, with a patch of white hairs near the base on 

 the outer side; a long fringe of black hairs on the same side, four or 

 five times as long as the diameter of the tibia; tarsus black, segment 

 1 with the basal half white on the external side; tarsus clothed with 

 long apprcssed hairs. Middle leg : coxa and trochanter dull ycllownsh- 

 brown ; femora rather uniform dark brown, with long apprcssed hairs ; 

 tibia dark brownish-black, a small white spot on the side near the base; 

 tarsi dark brownish-black, a few white hairs at the base of segment 1. 

 Ilind leg: coxa and trochanter dull yellowish-brown; femora paler 

 basally, dark brownish-black on the apical half, very slender at 

 origin, but stout at the tip, at the extreme tip, on the outer side, 

 a patch of white hairs ; tibia slender, dark brownish-black, hairs long, 

 apprcssed on basal third; on apical two-thirds, the hairs stand out 

 straight on four sides, being from seven to eight times as long as tha 

 diameter of the tibia; tarsus, segment 1 black, with long black hairs 

 on the outer face, apprcssed internally; segments two to five with 

 long white hairs externally, short black ones internally. 



