94 DUEHAM DIPTEEA. 



XV. 144. 



144. Stratiomys, Geoff. 



Larvae live in slime and damp sand and earth. 



1 (8). Upper side of the abdomen with yellow or whitish 



side-marks or bands. 



2 (7). Upper side of the abdomen with three pairs of yellow 



or whitish side-spots. 



3 (4). Under side of the abdomen yellow with black spots. 



(868. chamceleon, L.) 



4 (3). Under side of the abdomen black, the segments with 



yellow or whitish hind margins, or with band-like 

 spots. 



5 (6). Upper side of the abdomen with whitish side-dashes 



and whitish anus. (870. riparia, Mg.) 



6 (5). Upper side of the abdomen with three pairs of rather 



broad yellow side-spots, and a triangular spot on 

 the anus. (871. furcata, F.) 



7 (2). Upper side of the abdomen with two pairs of yellow 



side-spots and a yellow band on the fourth 

 segment; or only one pair of side-spots, and the 

 third and fourth segments with complete bands. 



(869. potamida, Mg.) 



8 (1). Upper side of the abdomen without yellow or whitish 



side-marks or bands, at most with lighter hairs at 

 the sides, which may have the appearance of 

 spots. (872. longicornis, Scop.) 



145. Odontomyia, Mg. 

 Larvae in damp earth, slime, and rotting leaves. 



1 (4). First antennal joint nearly twice as long as the second. 



2 (3). Upper side of the abdomen with yellow triangular 



side-spots, and with golden down in the female, 

 or, in certain lights, silver down in the male. 



(873. argentata, F.) 



3 (2). Upper side of the abdomen with narrow white side 



lines, and a similar one on the anus ; almost bare. 



(874. microleon, L.) 



