302 NORTH AMERICAN TRYPETINA. 



end of the marginal cell a brownish-black spot ; the streaks are 

 upon the humeral crossvein, in the middle between the latter and 

 the basis of the stigma, upon the latter, on the end of the 

 stigma, and between that and the tip of the second longitudinal 

 vein. The small crossvein lies a little beyond the last third of 

 the discal cell. The third longitudinal vein is distinctly bristly. 



Hab. The Antilles? (Fabricius) ; South America (Wiede- 

 mann) ; Buenos Ayres (collect. Wiedemann). 



Observation 1. — Fabricius, the first describer of the species, 

 names Dr. Pflug as* the discoverer, and the South American 

 islands as the habitat, which probably means the Antilles. Later, 

 the species was described by Wiedemann, who names South 

 America as the habitat. It is impossible to tell from the descrip- 

 tions of both authors, whether they really meant the same species, 

 although the descriptions contain nothing positively contrary 

 to this assumption. As the species is easy to identify, and as 

 Wiedemann's identification was based upon the comparison of 

 Fabricius's specimens, it can be safely assumed that he has 

 described the same species. My description is based upon a 

 male, marked Buenos Ayres and communicated to me as a type 

 from Wiedemann's collection. 



Observation 2. — This species may also remain in the genus 

 Tephritis, for the sake of facilitating identification, although its 

 third vein is distinctly bristly. This character, as well as the 

 not geniculated proboscis, recalls those species which, in my Mono- 

 graph of the European Trypetidae, I placed in the genus Oxy~ 

 phora; in fact I know of no other American species which stands 

 closer than T. fucata to the typical species of that genus, as, for 

 instance, to T. corniculata Zett., biflexa Lw., etc. I also call 

 attention to a peculiarity of most species of this group, that the 

 dark spots of the picture in the female are more extensive than 

 in the male ; this may likewise be the case with T. fucata. 



48. T. albiceps n. sp. % 9 . (Tab. XT, f. 5.)— Ex luteo cinerea, 

 capite albicante, fronte, antennis, scutello pedibusque luteis, abdomine 

 bifariam nigro maculato ; alae latiusculae, prseter imam basim totse colore 

 fusco-nigroguttato-reticulatse, guttis valde inaequalibus, in apice et prope 

 venam transversam posteriorem quam in reliqua ala minus confertis, 

 stigmate nigro uniguttato, vena longitudinali tertia non setosa; terebra 

 fceminse aterrima, duobus ultimis abdominis segmentis simul sumtis 

 aequalis. 



