984 CHARLES Paut ALEXANDER 
transversely wrinkled. Metanotum (Plate LX XXVI, 470) near anterior margin with a trans 
verse row of setiferous punctures, there being four on either side, the intermediate ones wit 
two setae. Wing sheaths reaching base of thirdabdominal segment. Leg sheaths reachin 
beyond midlength of fourth abdominal segment, fore legs a little the longest, hind leg: 
a little the shortest. 
First abdominal segment on dorsum somewhat similar to metanotum, with a transvers 
row of four punctures at about midlength, the lateral ones with two setae; remainin 
abdominal segments (Plate LX X XVI, 471) subdivided into approximately equal basal an 
posterior rings; on tergites, posterior ring with a transverse row of spines, basal ring unarmed 
on sixth tergite, where best developed, spines on posterior ring numbering about twelve, wit 
a seta at each end of the row and two others interspersed; on anterior tergites, spines ver 
small; on seventh tergite spines large, elongated; on eighth tergite four powerful spines i 
transverse alinement; on pleurites, a strong spine on each ring, that of basal ring deepl 
bifid and with a strong seta in notch thus formed; posterior ring with a single spine bearin 
a long seta on its face; on sternites, condition generally similar to that on tergites, the spin 
a little more prominent but of about the same number, these spines slender at their slight] 
curved tips and lacking on sternites 2 to 4. Female cauda (Plate LXX XVI, 472 and 473 
with acidothecae elongate, contiguous, on either side of tergites at base with a powerf 
incurved hook; posterior margin of eighth tergite with four spines, lateral pair a little th 
larger; ventral side at base with a median protuberance bearing two powerful lateral lob 
and two smaller chitinized spines which are directed caudad and ventrad; base of segmen 
8 with a crossrow of eight spines; posterior ring of segment 8 with a powerful spine a 
lateral end. 
Nepionotype—— South Mountains, near Myersville, Maryland, March 31, 1916. 
Neanotype.— Hagerstown, Maryland, May 9, 1916; cast pupal skin in collection co 
United States National Museum. ‘ 
Paratypes.— Larvae from type locality. 
Genus Brachypremna Osten Sacken (Gr. short + trunk) 
1886 Brachypremna O. 8. Berl. Ent. Ztschr., vol. 30, p. 161. 
Larva.— Unknown. 
Pupa— Antennal segments enlarged at base. Antenna short. Sheaths of maxillar 
palpi short, not recurved at tips. Pronotal breathing horns short, slender, finely annulated 
Mesonotum with eight prominent tubercies. Leg sheaths reaching beyond midlength o 
fourth abdominal segment, fore tarsi very short, other tarsi subequal in length. Abdomina 
segments each with four slender spines on posterior ring of both sternites and tergites, Jus 
before posterior margin; two pleural spines; eighth segment of male with four prominent, 
spinous lobes. 
Brachypremna is a small genus, including but nine recent species foun 
in the Austral and Tropical regions of the New World. Brachypremn 
eocenica Meunier is described from the Baltic amber. The flies of th 
best-known species, B. dispellens, are known in parts of the Souther 
