Dec, 1922.] Johannsen: Stratiomyiid Larv.«. 151 



The immature stages of Ptecticus and of Chrysochroma nigri- 

 corne are as yet unknown. 



Hermetiinae, 



This subfamily is not recognized by Williston in his Manual, 

 Hermetia being placed in the Clitellarinae, while AcrochcBta and re- 

 lated genera are placed with the Sarginae. I prefer the arrangement 

 given by Kertesz in his Catalogus Dipterorum, as being the more 

 natural. 



Though Hermetia illucens has a southern range, it has been re- 

 corded as far north as New Jersey, and is therefore included in this 

 paper. One of my specimens together with its puparium was given 

 to me by Mr. L. H. Dunn, he having obtained the specimens from 

 human carrion in Panama. The larvse are said to be abundant in 

 decaying vegetables and not uncommon in silos throughout the south. 

 Malloch states that they are numerous in latrines. 



Specimens of what I believe to be the penultimate instar were col- 

 lected by Dr. J. C. Bradley in Georgia from a pile of decaying paper 

 and other organic matter (fig. 36)-. 



Beridiinae. 



The only larvae of members of this subfamily which I have seen 

 belong to the species Allognosta fuscitarsis Say. They were found 

 in decaying organic matter associated with Fannia scalaris. The 

 larva is more slender than the puparium (fig. 41). The penultimate 

 instar dififers in having a more tapering head and has numerous ap- 

 pressed scale-like hairs upon its body. Malloch's Genus Incertus r 

 is probably the penultimate instar of this, or another species of the 

 same genus. 



The early stages of Beris annulifera and morrisii, and Actina viridis 

 have not yet been described. The larva of the European Beris val- 

 lata Foerst. has been described by de Meijere (1916) who found it 

 among decaying leaves. The characteristic feature of this form is 

 the arrangement of the minute setae in small tufts upon the abdominal 

 segments (fig. 28). Actina viridis is an anomalous form, the male 

 having dichoptic eyes as in the genus Actina, but its wing venation 

 is typically that of Beris. Handlirsch (1883) has described and 



