GENERA OF SUBFAMILY ANOPHELINAE. THEOBALD 223 



Neostethopheles 



18. Thorax with narrow hair-like curved scales 

 and some of them broad straight scales, 

 others spatulate on the sides. Abdomen 

 covered with fine hairs except the three last 

 segments which are covered with scales. 

 Tufts of scales on hind femora. Wing 

 scales lanceolate . . , i . . . Manguinhosia. 

 II. 19. Antennal segments with many densely scaly tufts Chagasia. 



B. 20. Antennae with outstanding scales on the second 



segment, more oppressed ones on the first. 

 At least one segment of abdomen with long 

 flat more or less spatulate scales . . Calvertina. 



21. First submarginal cell very small . . . Bironella. 



To the above must be added the following new genera recently 

 created by James : 



Abdomen with hairs but without scales of any kind. Thorax 

 with hairs, and, as a rule, without scales of any kind, but in 

 one or two species a few long and exceedingly narrow false 

 scales may be present, chiefly on the anterior promontory. 

 Thoracic lobes with hairs but without scales. Upright forked 

 scales of the head very narrow in their whole length (linear or 

 rod-shaped) . . . . . ... 



Abdomen with hairs but without scales of any kind. Thorax 

 with dorsum clothed with long, narrow, curved, sharp-pointed 

 scales which form on the anterior promontory a thick bunch 

 projecting over the neck. Pro thoracic lobes with a conspicu- 

 ous tuft of rather broad true scales projecting anteriorly. 

 Upright forked cephalic scales of the usual broadly-expanding 



type Patagiamyia. 



Abdomen with the first seven or six segments ornamented with 

 hairs only. The eighth segment (sometimes also the seventh) 

 and the genital process carry in addition a number of scales 

 similar in character and arrangement to those of the group 

 Nyssorhynchus . Thorax with the dorsum clothed with hairs 

 and narrow-curved, sharp-pointed scales of various lengths and 

 quite similar to those of the group Myzomyia. In addition 

 there are on each side of the anterior third of the dorsum and 

 beneath the angles of the anterior promontory some broader 

 blunt-ended scales. Prothoracic lobes without a tuft of 

 scales. Head with the usual type of upright forked scales . Nyssomyzomyi 

 Abdomen with the dorsum of each segment thickly clothed 

 with hairs and narrowly elliptical and blunt-ended scales 

 which are not aggregated together to form tufts of any kind. 

 The ventral surface of each segment is devoid of scales 

 except that from the apices of six segments in the mid-line 

 prominent tufts of long, blunt-ended, scales project directly 

 downwards. These tufts resemble the single abdominal tuft 

 present in the genus Myzorhynchus. Thorax clothed with 

 rather narrow oblong and blunt-ended true scales. Prothor- 

 acic lobes with a prominent tuft of true scales. Head with 

 the usual kind of upright forked scales . ..",, . Christophersia, 



