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ENTOMOLOGICAL SOCIETY 



ward. This may perhaps be present in the larvae of other 

 species, as it would be easily overlooked in such transparent 

 larvae. A more detailed description follows : 



Larva. Length about 8 mm. Form (fig. 5) elongate, broadest at 

 the thorax and gradually tapering to the slender terminal segment. Air 



TT 



FIG. 5. Sayomyia punctipennis: Larva, dorsal view. 



vesicles present in the thorax and seventh abdominal segment. Body 

 entirely colorless and transparent. Antennal bristles and mouth parts 

 pale yellow-brown; foramen of head tinged with brown; eyes black; 

 air vesicles with round, closely approximated, dark-brown pigment 

 spots. 



Head (fig. 6) rather small, broadest at the eyes. Eyes situated 

 behind the middle, large, compound, with an emargination behind to 

 receive the small accessory eye. The head is prolonged anteriorly into 

 a process which bears at its extremity the closely approximated anten- 



FIG. 6. Sayomyia punctipennis: Head of larva. 



nae. This process about equals in length the head itself; at its base 

 it is about a third as broad as the greatest width of the head ; near 

 the middle it is much narrowed by the concave sides. Antennas in- 

 serted close together at the extremity of the process, directed down- 

 ward. They are of a single stout elongate segment bearing at its 

 tip six tapering slightly curved spines. Of these spines four are of 

 nearly equal length with the antennal segment and one is a third 



