NO. 1938. THE DIPTEROUS FAMILY PHORIDJE—MALLOCH. 507 



as in female, palpi clear yellow, large and moderately bristled; thorax 

 yeUow, pleurae yellow, scutellum with four bristles; abdomen brown, 

 segments subequal, hypopygium large, ventral processes protruding, 

 anal protuberance long and distinctly hairy; legs yellow, tibial spurs 

 minute; wings clear, veins brown, costa to beyond the middle, first 

 division one-fourth shorter than second, fourth vein straight at base 

 and running nearly straight to close to the wing tip; halteres brown. 

 (First description of this sex.) Female entirely without wings and 

 halteres; thorax shorter than head and about twice as broad as long, 

 scutellum obsolete, three lateral marginal thoracic bristles, and four on 

 the posterior margin the center pair being very minute; fii'st abdominal 

 segment short, second about one-tliird as long as length of abdomen, 

 third, fourth, and fifth subequal, the latter with a crescent-like slit 

 on the dorsum, its lateral edges near to anterior edge of segment and 

 its center about one-third from apex of segment, legs stronger than in 

 male, the hind metatarsi strong and with 5-6 transverse rows of short 

 bristles on the ventral surface. 



Length, 0.7-1.2 mm. 



Represented in collection by a large number of specimens from 

 Nassau, Bahama Islands (Bartsch and Barber). There are several 

 specimens "from a decaying beetle," Cacao, Trece Aguas, Alta Vera 

 Paz, Guatemala, April 27, 1906. (Barber and Schwarz), and one 

 specimen same locality, April 18, 1906, taken outdoors, same col- 

 lectors, that are identical with those from Nassau which were "feed- 

 ing on a collection of shells." The original female specimens from 

 which the species was described were found on a decaying beetle and 

 the type-locality is Utudas, Porto Rico.^ 



PULICIPHORA OCCIDENTALIS Melander and Brues. 



This species was described from specimens taken about the burrows 

 of Halictus {Hymenoptera) at Woods Hole, Massachusetts.^ I have not 

 seen tliis species, which is known from the female only, and is unrep- 

 resented in the collection. 



PULICIPHORA GLACIALIS, new species. 



Plate 40, figs. 1, 2, 3. 



Female. — AUied to occidentalis Melander and Brues, but larger 

 and having a different arrangement of the bristles on the thorax. In 

 the figure given by Melander and Brues of occidentalis ^ this species is 

 represented as having one ver)'^ long and strong bristle on the lateral 

 margin of mesonotum near the anterior margin, and four posterior 

 marginal bristles, the hind metatarsi are represented as having no 

 transverse rows of short strong bristles as in the other two species. 

 From horinquensis Wheeler glacialis may be distinguished by its much 



» Bull. Amer. Mus. Nat. Hist., vol. 22, 1906, p. 269. 

 » Biol. Bull., vol. 5, 1903, p. 14. 

 » Idem, p. 18. 



