Dec, 1922.] JoHAXNSEN : Stratiomyiid Larv.e. 147 



segments but one, each with six long and strong bristles besides the 

 still longer laterals. 



The larva of viaciilicornis Hine, the North American representative 

 of the genus Neopachygaster was described by Greene (1917) and 

 also by Malloch (1917). Greene found larvae in the early spring un- 

 der the bark of the tulip tree. Malloch's specimens were obtained 

 under the bark of fallen elm trees, where they were feeding on the 

 decaying matter under the slightly loosened bark. They appear also 

 to be carnivorous. The larva resembles the penultimate instar of 

 Microchrysa polita but differs in lacking the appressed scale-like 

 hairs, the cleft terminal segment of the abdomen, and in having the 

 body bristles less distinctly clavate. My specimen was received 

 through the kindness of Mr. Greene. 



The larva of Eupachygaster henshawi Malloch was found by Mal- 

 loch (1917) under the loose bark of an apple tree, feeding upon sap 

 and upon insect larvae. 



The early stages of Bcrkshiria albistylum John, and Johnsonomyia 

 aldrichi Malloch are as yet unknown. 



Clitellariinae. 



The genus Euparyphiis is represented in eastern United States by 

 several species, three of which I have reared. The larvae of E. hrcvi- 

 coniis were found in algae and moss which grew on the sides of 

 the rocks that bordered a brook, and were continually wetted by the 

 running water. Some were also found in moss over which there 

 was a trickling stream of water. Larvae in all stages were found in 

 May and June. Figures 5, 6, 7, 13 and 15 show the penultimate and 

 last instars. In the first instar the curved thorns, so conspicuous in 

 larger larvae, are wanting, although their basal protuberances are in 

 evidence. 



The larvae of E. greylockensis and E. tetraspilus were found in the 

 water in overhanging vegetation growing on the margin of a brook. 

 The former was collected in June, the latter in July. My bred speci- 

 men of E. greylockensis differs from the description of the type in 

 having small lateral stripes on the fourth abdominal segment. It 

 may deserve a varietal name. 



I believe that the European Oxyccra feiiiiiconiis Macq. should be 



