Genus Dendromyia. 615 



the cell ; posterior cross-vein longer than the mid and not quite 

 its own length distant from it. 



Genitalia with short thick basal lobes narrowed apically 

 (cone-shaped) with a long row of closely-set long golden flattened 

 hairs ; apex of basal lobe with a few chaetae only ; claspers long, 

 with a lamellate side area near the acute apex (other structures 

 shown in figure). 



Length. — 3 mm. 



Habitat. — Sao Paulo (Dr. Lutz). 



Observations. — Re-described from two perfect males given me 

 by Dr. Lutz. It differs from D. serrata in having the pale 

 lateral abdominal line and pale venter, in its more dusky hue 

 on the thorax, leg markings, and in the very marked genitalia. 

 The leg markings appear varied owing to the legs becoming 

 twisted in death and the lower pale scaled areas consequently 

 showing above. 



Dendromyia serrata. Lutz MS. (nom. nud.). 



Head and thorax deep dull brown; pleurae with silvery 

 puncta. Abdomen deep black with silvery-white lateral patches, 

 mainly apical and silvery-white venter. Legs deep brown, un- 

 handed, but the under side of hind and fore tarsals grey to white. 



$ . Head deep brown, with flat brown scales, a few violet 

 ones in the centre and pale ones around the eyes, lateral scales 

 pale creamy-white ; a white scaled line between the eyes, with 

 two long nearly parallel brown chaetae projecting forwards from 

 it, other chaetae deep brown ; palpi, proboscis and antennae deep 

 brown with some metallic reflections on the proboscis. 



Thorax brown, with flat broadish dull brown scales irregularly 

 disposed ; prothoracic lobes with dull brown and creamy scales ; 

 scutellum with large flat dusky brown scales, showing dull violet 

 reflections ; metanotum deep brown with brown chaetae ; pleurae 

 brown, with dense large silvery-white flat scales, which extend up 

 to the edge of the dorsum of the mesonotum forming a definite 

 line between the dark and pale areas. 



Abdomen contracted and narrow in front, broadened apically, 

 deep blackish-brown, with lateral pale spots mainly apical in 

 situation ; venter pale silvery. 



Legs deep brown, unhanded, the end tarsals of hind legs and 

 to some extent the fore show pale colours, due to paler ventral 

 scales, the hind being almost white ; ungues small, equal and 

 simple. 



