Genus Dendromvia. 603 



Abdomen testaceous, covered with deep brown scales above ; 

 yellowish below with grey to almost white scales. 



Legs yellowish with deep brown scales, which are scanty 

 basally and so appear yellowish ; ungues small, equal and simple. 



Wings with the first sub-marginal cell considerably longer and 

 but slightly narrower than the second posterior cell, its stem a 

 little more than one-fourth the length of the cell : stem of the 

 second posterior more than one-half the length of the cell : base 

 of the first sub-marginal considerably nearer the base of the 

 wing ; the posterior cross-vein shorter than the mid, about its 

 own length distant from it. The bases of the wings are pale 

 testaceous. Halteres testaceous, both stem and knob with 

 blackish scales. 



Length. — 5 mm. 



Habitat. — S. Antonio, Bolivia. 



Observations. — Described from a single female. It is one of 

 the largest of the genus and should at once be told by its silvery - 

 grey scutellum, its densely scaled thorax and its mauve pro- 

 thoracic lobes. 



Type in the National Museum of Hungary, Budape- 



Genus DENDROMYIA. Theobald (1903). 



Heizmaxxia. Ludlow (1905). 



Mono. Culicid. III., p. 313 (1903), Theobald; Canad. Entomo. XXXVII., 

 p. 130 (1905), Ludlow {Heizmannia) ; Les Moust., p. 426 (1905), 

 Blanchard ; Mosq. do Brasil, p. 7 (1904), Lutz ; Gen. Ins. Fam. 

 Culicid., p. 39 (1905), Theobald. 



Two new species have been added from outside South America, 

 from whence Dr. Lutz has described three new ones (personata, 

 oblita and serrata). 



The genus is a very marked one, but by some error in 

 writing to Miss Ludlow I seem to have wrongly advised her, and 

 in consequence she founded a new genus Heizmannia for an 

 undoubted Dendromyia. Regarding the characters of Heizmannia 

 Miss Ludlow writes as follows : — 



" Head covered with broad flat scales ; thorax with flat 

 spindle-shaped scales, very broad on the lateral thirds of the 

 mesonotum ; scutellum with broad flat scales : metanotum with 

 large median bunch of chaetae (not less than 16-20) on caudal 



