206 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.45. 



margin is concave not convex as in noacki; moreover its tip points 

 disto-cephalad, not distad; the wings are more robust but the mar- 

 ginal cilia are the same relatively as in noacki; the cephalic tibial 

 spur is slender, curved at apex and beneath fimbriate bearing about 16 

 tines which gradually increase in length distad; otherwise, except 

 as already described for color, as in noacki. The fore wings are 

 smoky out to the middle of the marginal vein (or proximal third) 

 but the smoky area is fainter caudad. 



I have studied the following specimens: Only the single female 

 type specimen found remounted on a tag and placed with a female 

 of fasciata.^ Consequently it was remounted on a slide in xylol- 

 balsam with the latter before the two were known to be distinct. 

 The type bears the following label: ' 'SignipJiora unifasciata Ashmead. 

 Type No. 4774, U.S.N.M. SSO^i. Iss. Dec. 19, '81." As stated 

 it is mounted with a female oifasciata. 



Nothing more can be added concerning it. 



7. SIGNIPHORA BIFASCIATA Ashmead. 



Signiphora bifasciata Ashmead, 1900, pp. 409, 411. 



The original description is as follows : 



Female. — Length, about 0.60 nun. Black with two transverse yellow bands on 

 thorax above between the tegulse, or on the hind border of the mesonotum, the other 

 at the base of the scutellum, the latter also continued along the mesopleural suture; 

 legs black or blackish, the knees yellowish, the tarsi whitish; wings hyaline. 



Type.— Gat. No. 4775, U.S.N.M. 



Habitat.— West Indies: St. Vincent. (H. H. Snaith.) 



I have not been able to see the type of this species, which is a 

 unique in the collections of the United States National Museum, form- 

 erly mounted on a tag, now mounted in balsam. It should be easily 

 recognized though it is perhaps needful to call attention here to the 

 fact that the fore wings are probably infuscated in some manner, 

 probably near base, this being overlooked by the describer (as in the 

 case of some of the other species when the infuscation was proximal). 

 Nothing is known concerning its habits. 



After writing the foregoing, Mr. J. C. Crawford of the United States 

 National Museum was kind enough to examine the type for me in 

 regard to certain of its characters and I have learned from him that 

 after remounting in balsam there is no noticeable metallic colora- 

 tion; the fore wings are lightly fumated out to the end of the stig- 

 mal vein; the transverse thoracic bands are contiguous and yellomsh 

 white and distinct, more distinct in the tag-mounted specimen than 

 after it was remounted in balsam; the inner margin of the stigmal 

 vein is nearly straight; the marginal cilia of the fore wing are mod- 

 erate in length, about a third of the wing's greatest width; the 

 discal bristle is present; and that the posterior wing is broad, its 

 margins not parallel but the wing broadening toward the apex. 



' Described beyond. 



