INSECUTOR INSCITI^ MENSTRUUS 17 



When ready to pupate the larva spins up a cluster of leaves, 

 or a roll, if on banana, and spins a loose, tough web of brown 

 silk, within which it undergoes its last molt. Males averaged 

 18.5 days for the pupa stage with a variation of 17-20 days ; 

 females averaged 16.5 days with a variation of 15-18 days. 



Enemies 

 The Ichneumon Eremotylus angtdatus Hooker is a parasite 

 of the larva. Dead larvae are often found with a strong growth 

 of what is apparently a species of Empusa. 



ELUCIDATIONS OF NEW ENGLAND MUSCOIDEA 



BY CHARLES H. T. TOWNSEND 



Certain forms that have been confused specifically, or 

 wrongly referred generically, are elucidated in this paper. 

 Various other forms, believed to be undescribed, are added. 

 External adult-character descriptions are included of several 

 forms that have thus far stood on reproductive and early-stage 

 characters only. 



Family CALIRRHOID^ 

 Ochrocera, new genus. 



Genotype, Ochrocera vaginalis Townsend, new species. 



Allied to Arctophyto, from which it differs as follows: 

 Female. All the macrochastse strong, body not hairy ; no facial 

 carina, the antennae not widely separated; frontal bristles 

 closely placed, about 10 on each side ; front more produced, 

 the parafacials broader; cheeks about three-fifths of eye- 

 height ; three proclinate f ronto-orbitals ; two or three extra pairs 

 of ocellars, shorter than front pair; palpi well dilated at tip; 

 cubitus rectangular, with a strong stump; abdomen scarcely 

 widened, with strong erect discals and marginals, including 

 median marginal pair on first segment, otherwise with only 

 short appressed microchaetae and no hairs. Bears a strong 

 resemblance to Paramacronyhia, from which it may be dis- 

 tinquished by the bare parafacials and the discal abdominal 

 macrochaetae. 



