12 



Pipunculidae. 



stretching beyond the oral apertiire; labriim and hypopharynx are 

 small, of about aqual length, somewhat triangular, the maxillary 

 palpi somewhat long, one-jointed and club-shaped; the maxillæ are 

 by Becher described and figured as lancet-like, a little longer than 

 labriim and pointed, I was not able to fmd them and I doubt their 

 existence as free processes; labiiim is relatively not small, its chitinized 

 ventral plate sends two long processes backwards, the labella are 

 very large. Thorax is about quadratic, a little arched above, the 



Fig. 4. Abdomen of P. zonatus (J from 

 above. a postscutellum, behind it the 

 narrow metanotum. 6, 7, 8, sixth, seventh 

 and eighth segments. The unsymmetrical 

 hind margin of the fifth segment is 

 seen. 



Fig. 5. Abdomen of P. Thomsoni S 

 from above; in this species sixth 

 and seventh segments are not visible 

 on the dorsal side; the last segment 

 is the eighth w^ith its apical im- 

 pression. 



prothoracic parts form at the humeri a curious, somewhat elevated 

 knob; the thoracic disc has generally very sparse and fme, some- 

 times scarcely perceptible hairs, present only as dorsocentral rows 

 and behind the humeri, but in some species the disc is relatively 

 densely clothed all over with more obvious hairs and in this case 

 scutellum bears similar hairs. Thorax has no bristles; the marginal 

 hairs on scutellum are often a little longer than the other hairs, in 

 furcatus (non-Danish) somew^hat bristly; on propleura there is in 

 many species a fan of distinct hairs. Abdomen elongated, cylindrical 



