26 INSECUTOR INSCITI^ MDNSTRUUS 



chsetae in either sex; second with a median marginal pair nor- 

 mally; third with a loose marginal row. Second segment 

 heavily arcuate on middle of anterior border, bulged forward. 

 Anal segment not emarginate. Marginal row of macrochaetse 

 of anal segment not sagittate. Hypopygium of male much 

 narrower. Second to fourth front tarsal joints of female more 

 heavily widened. 



A female of B. piceifrons, collected by the writer at Mel- 

 rose Highlands, Massachusetts, September 13, 1914, disclosed 

 a uterus 70 mm. in length which was estimated to contain over 

 13,000 eggs and maggots. The eggs occurred in as many as 

 24 rows abreast. TD4377. 



Jurinia nitida Wulp, 1882, Notes Leyd. Mus. IV, 82, is a 

 closely allied western form. 



Fabriciodes, new genus. 



Genotype, Fabriciodes montana Townsend, new species, for 

 Echinomyia florum Coquillett, 1897, Rev. Tach. 144, pt., holo- 

 type labeled White Mts., N. H. (nee Tachina florum Walker, 

 1849, List IV, 722). Holotype, No. 19598, U. S. Nat. Mus. 



Differs from Law (ev or op sis as follows: Male. All macro- 

 chaetae weak, body long-hairy. Third antennal joint broadly 

 rounded, nearly as long as second. First aristal joint may be 

 somewhat elongate. Parafacials and parafrontals with hairs 

 that are not bristly. Sternopleurals mixed with pile. Five 

 lateral scutellars, with pile. Median marginal pair of bristles 

 on first abdominal segment; discals and subdiscals on inter- 

 mediate segments, but all weak; abdomen with long pile pos- 

 teriorly and shorter pile anteriorly. Hypopygium heavier; 

 claws not so elongate. 



The genotype is distinguished by the wide black vitta of ab- 

 domen being spread over whole of anal segment, and the scutel- 

 lum being wholly light testaceous. 



Rhachogastcr Townsend, 1915, Can. Ent. XLVII, 291. 



Genotype, Rhachogaster kermodei T., 1. c. 



The species may be distinguished from Bchinomyodes picei- 

 frons T. as follows : Form much less broadened ; distinctly nar- 



