SABETHES TAESOPUS 25 



successfully with their prey. The rarity of predaceous forms is conditioned by 

 their limited food-supply. 



Tables of the Species of the Genus Sabethes. 

 adults, stbuctube and coloration. 



1. Middle legs only with tufts 2 



Front legs also with small fringes; none on hind legs 



tarsopus Dyar & Knab (p. 25) 



2. No white on the legs cyaneus Fabricius (p. 26) 



Apical part cf fringe of middle legs white Mpartipes Dyar & Knab (p. 30) 



ADULTS, MALE GENITALIA. 



1. Clasp-filament greatly modified and distorted cyaneus Fabricius (p. 28) 



The species tarsopus Dyar & Knab and Mpartipes Dyar & Knab are not in- 

 cluded, as we possess no males. 



No larvas are known in this genus. 



SABETHES TARSOPUS Dyar & Knab. 



Sabethes longipes Coquillett (not Fabricius), U. S. Dept. Agr., Bur. Ent., Tech. Ser. 



11, 28, 1906. 

 Sabethes longipes Busck (not Fabricius), Smiths. Misc. Colls., quart, iss., lii, 71, 1908. 

 Sabethes tarsopus Dyar & Knab, Proc. U. S. Nat. Mus., xxxv, 62, 1908. 



Original Description of Sabethes tarsopus : 



Female. Proboscis moderately long, slender, swollen at the apex, clothed with 

 black scales, with a metallic blue luster; palpi black-scaled, with blue luster; pro- 

 thoracic lobes brilliantly blue-scaled; mesonotum similar, becoming paler in color 

 with a greenish silvery tinge on the scutellum; pleura and coxae silver-scaled; metano- 

 tum with a group of bristles near the apex, its surface clothed with flat silver scales; 

 postscutellum brilliantly light blue-scaled; abdomen with metallic blue scales above 

 and at the sides, beneath silvery white-scaled, the colors separated in a straight line; 

 tip of the abdomen with coarse black bristles; legs mostly metallic blue-scaled, with 

 purple luster; the front and mid legs ciliate, hind pair simple; the front legs are 

 ciliate on the apical half of the tibias and the base of the first tarsal joint, the ciliation 

 following the upper and lower surfaces; the apical portion of the second and all of 

 the following joints silvery white marked beneath; mid-legs with the ciliation on the 

 apical half of the tibige and the first and second tarsal joints, very long along the 

 dorsal margin of the tibia and first tarsal joint; second tarsal joint, including its 

 ciliation, silvery white; third tarsal joint and most of the fourth silver-white, the 

 apex of the fourth above and all of the fifth black-scaled; there is an elongate white 

 spot on the ventral surface of the tibia just above the ciliation; hind legs without 

 ciliation and with the fourth and fifth tarsal joints silver white on the inner side. 

 Length 4.5 mm. 



Three specimens, Bocas del Toro, Panama, September 28, 1903 (P. Osterhout) ; 

 Paraiso, Canal Zone, Panama, November 1, 1907 (A. H. Jennings) ; Cordoba, Mexico, 

 March 16, 1908 (F. Knab). 



Type. Cat. No. 11972, U. S. N. M. 



Description of Female of Sabethes tarsopus (Male and Larva Unknown) : 



Female. Proboscis rather short, slightly enlarged at tip, labellse conical ly 

 tapered; vestiture black with a blue reflection; setae fine, short, obliquely out- 

 standing. Palpi moderate, about one-fourth as long as proboscis, uniform, black 

 with a blue reflection. Clypeus elongate, narrow, truncate at tip, convex, 

 strongly white pruinose. Antennae moderate, the joints subequal, rugose, pilose, 

 black, second joint pale at base ; tori subspherical with a cup-shaped apical exca- 

 vation, black with a distinct white pruinosity; hairs of whorls rather long, 

 sparse, black. Eyes very large, contiguous on vertex, partly inclosing the an- 

 tennae and touching the clypeus, brown. Occiput clothed with flat black scales 

 with a metallic blue and green reflection, a row of setae along margin of eyes; 

 cheeks silver-scaled. 



Prothoracic lobes large, approximate dorsally, similarly colored to the meso- 

 notum, but brighter. Mesonotum blackish brown, clothed with elliptical, flat, 



