THE CANADIAN KNTrtMOLOGIST. .HI. 



into a long arm chitinized, its apex blunt but slightly notched. 

 Ventral aspect, 9th torgite almost straight on caudal margui ; pleurx sliori, 

 the inner caudal angle produced into a long appendage, which is tufte.l 

 with yellow hairs at its tip; guard of the penis long, enlarged basally, 

 projecting slightly beyond the apices of the pleural appendage ; ventrad 

 of the pleural arm is a slender acicular appendage. 



Holotype. — 6- Totonicipan, Guatemala, 1902. (Dr. G. Eisen.) 

 Allotype. — ?. Antigua, Guatemala. (Dr. G. Eisen.) 

 Paratypes. — ^S- Totonicipan, Guatemala. (Dr. G. Eisen.) 

 Types in U. S. Nat. Mus. coll, (No. 15,135)- One paratype in 

 author's collection. 



Like li^er/a O. S. (Proc. Acad. Nat. Sci. Phil., (850, p. 209 ; Mono- 

 graph Dipt. N. Am., Vol. 4, p. 69), of the Eastern U. .S., but larger, the 

 mesothoracic prc-escutum browner and the stripes indistinct. In Hberta 

 the ^ genitalia (fig. u) consists of short pleur;^.^ the swollen ventral lobes 

 produced entad in a blunt knob, which bears two conspicuous caudad- 

 projecting spines at its tip, the ventral one very stout, spine-like, the 

 dorsal one more slender. In knabi the pleurae are longer, the lobes short, 

 the ventral one produced into a long arm, which is slightly notched 

 apically. 



Fig. 



u. Hypopygium of /; Hberta Osten Sacken. 



v = ventral apical appendage. 



d = dorsal ajjical appendage. 

 V. Hypopygium of/", liberoides, sp. n. 

 w. " /'". knabi, sp. n. 



(To be continued.) 



