A NEW CUTEREBRA FROM PANAMA 187 



parafacials, parafrontals dark greenish covered with brassy poUen in both 

 sexes. Frontalia pale fulvous, first two antennal joints and base of third 

 rufous, rest of third joint and arista brown, palpi yellow to fulvous-yellow. 

 All head pile pale brassy except the black hairs of parafrontals. Thorax, 

 pleurae, and scutellum dark greenish, rather shining, brassy pollinose in 

 both sexes ; five vittae of usual pattern. Scutellum more or less rufous 

 under the green sheen and the pollen. Abdomen polished metallic blue- 

 black, the anal segment of both sexes with faint silvery or brassy bloom 

 in oblique view but not directly visible. Legs black. Wings lightly 

 infuscate, faintly yellowish on base. Both scales of tegulae deep fuscous 

 to fuscous-watery and tawny. Scutellum with three strong marginal ma- 

 crochaetae on each side, the middle one a little shorter than the others ; 

 the weak decussate apical pair present, with the short erect pair in front 

 of them. 



Type, TD4 1 49 (fly, straplike uterus, black maggots). The cotypes 

 include TD4 146. 



This form differs in the scutellar bristles from A. incasana T. of the 

 north Peruvian coasted plains, but agrees in this character with the form 

 of incasana occurring in the central coastal-foothill region. It may prove 

 to be a subspecies, but is not so indicated at present. 



A NEW CUTEREBRA FROM PANAMA 



(Diptera) 

 By FREDERICK KNAB 



Cuterebra maculosa, new species. 



Female : Head black, more or less shining. Frons behind slightly less 

 than the width of one eye, strongly broadening in front, the ocular mar- 

 gins nearly rectilinear, the anterior margin prominently arcuate ; surface 

 with a slight median groove and shallowly depressed each side of the 

 middle, raised toward the ocelli and somewhat swollen anteriorly ; a broad 

 median zone velvety black and densely clothed with fine but stiff black 

 hairs, laterally and in front subshining and with scattered black hairs 

 inserted in fine punctures ; a small white pollinose spot on middle of eye- 

 margin, an elongate spot of the same nature anteriorly, reaching from 

 eye-margin two-thirds way to the antennae. Lower part of head more 

 strongly shining, deeply and irregularly wrinkled on the cheeks, densely 



