INSECUTOR INSCITI.S MENSTRUUS 9 



fifth tarsal joint is white too. The hind legs of the specimen 

 from Mana are like those in trinidadensis; the specimen from 

 Brazil has the white on the hind legs on the bases of the two 

 last tarsal joints well developed, and traces of white on the 

 second and third, and is more like splendida. Almost certainly 

 the species, if distinct, will be a Dodecamyia species, 



Dyarina pallidoventer Theobald. 



Phoniomyia pallidoventer Theobald, Mon. Culic, iv, 598, 1907. 



Phoniomyia pallidoventer Theobald, Mon. Culic, v, 577, 1910. 

 There is not much left of the type but legs and a mount 

 of the male genitalia. This is far from perfect but is recog- 

 nizable as a mount of a Dyarina species. The basal arm seems 

 to be divided again but this is not clearly visible. Theobald 

 indicated the peculiar structure of the clasp already in Mon. 

 Culic, iv, 599, where he writes, "The claspers large and curved 

 with a large acute process arising from the base about half the 

 length of the clasper." By this process he did not mean the 

 basal arm but the other short one, half way up. The white on 

 the mid legs on one side of the first joint, second and third all 

 round, fourth on one side basally, fifth all black. The fifth 

 segment is very short, fourth and fifth segment distinctly 

 thickened, the last two hind tarsals white at base beneath. 



TABLE OF DODECAMYIA DYAR 



1. Side piece without tuft of spines 2 



Side piece with a tuft of spines near or beyond the middle 3 



2. Basal appendages with four long spines clasoleuca Dyar & Knab 



Basal appendages with two spines trinidadensis Theobald 



.^>. Spines near the middle of the side piece aphobema Dyar 



Spines near the apex splendida Bonne-Wepster & Bonne 



Of Dodecamyia quasilongirostris the male is unknown. 



TABLE OF DYARINA BONNE-WEPSTER & BONNE 



1. Expansion on basal arm of clasp divided. ... [yallidoventcr Theobald 

 Expansion on basal arm of clasp shnple 2 



2. This expansion smooth, apical hook recurved. 



tripartita, Bonne-Wepster & Bonne 

 This expansion pilose denticulate on the margin, apical hook 



laterally directed lassalli Bonne-Wepster & Bonne 



