WERNER MARCHAND 123 



it lives in debris, or in the ground around low places near where the 

 eggs are laid.^^ 



" The pupa [Plate 1 1 , Fig. 127] is somewhat dusky in coloration, the thorax being 

 almost black. The terminal teeth of the abdomen [Plate 13, Fig. 159] are quite 

 different from those of any species studied so far, and these differences alone 

 make its determination easy. The dorsal and lateral teeth are much larger than 

 the ventral, the lateral being much larger than any of the others; the ventral 

 teeth point almost directly backward, while the direction of the others is largely 

 upward. The thoracic spiracle is rather small and nearly longitudinal, its rima 

 is curved, but no distinct hook is formed at the posterior end. Length 18 mm." 



We owe our knowledge of tlie early stages of Tabanus lasiophthalmus 

 entirely to Hine. 



Tabanus laverani Surcouf. — An African species, being rare in Neave's 

 locality, IVIt. IVIlanje in southern Nyasaland, where only occasional 

 specimens were taken. 



A single female was bred on November 25, 1913, from a larva col- 

 lected near Neave's headquarters. The larva did not belong to the 

 pigmented type like that of Tabanus gratus and resembled the larva 

 of Tabanus variabilis in bearing lateral prolegs on the anal segment. 

 It was, however, of a yellower color and less transparent than that 

 species, and lacked any pigmentation on the syphon. 



The pupal aster (Plate 15, Fig. 185, a) is remarkable for the great 

 size and elongation horizontally of the middle pair of hooks. The 

 dorsolateral comb is reduced to tv/o very short processes, the main 

 combs on the last segment being also of this character, as may be 

 seen from the view in profile. 



The pupal aster and dorsolateral comb of the female are figured 

 (Plate 15, Fig. 185, a, b,c). 



Tabanus lineola Fabricius. — A common species, inhabiting eastern 

 North America, common in states as wide apart as IVTassachusetts, 

 Ohio, New Jersey, and Louisiana. 



We owe to Hart a description of larva and pupa. The larva closely 

 resembles the young of nigrescens, and was not separated from it at 

 first. Examples were taken at Hart's collecting station, C, near the 



^- 1 have since found (May, 1917) the larva of this species in the muddy bank 

 of a rapid flowing brook in the neighborhood of Princeton, N. J. 



