180 C. R. Osten Sachen: 



thus the little rhomboid cell, existing at this place in most Tipulidae 

 is not separated here from tlie costal cell; praefurca rather long, 

 witli a stump of a vein near the root; the petiole of the first sub- 

 marginal cell (that is, the interval between it and the origin of the 

 third vein) very short; the bases of the second submarginal and of 

 the first posterior are likewise on the same line;. second posterior 

 "with rather a long petiole; discal cell rather large. 



Gynoplistia fusca Jaennicke, Neue Exot. Dipt. p. 14 (Chili) of 

 which I had a glimpse in Dr. von Heyden's collection in Frankfort, 

 is, as far as I could see, the same species as Ct. ßavipennis of 

 Mr. Bigot's collection. It is not a Gynoplistia. 



Ozodicera. 

 Macq. H. N. Dipt. I, p. 92; 18.34. 



Ozodicera is a Tipula with pectinate antennae. 



Antenna€ 13-jointed; joints 4 — 9 are provided on the under- 

 side, at the base, with one or two somewhat spindle-shaped bran- 

 ches; the last four joints have no branches (O. argentina v. d. W. 

 Tijdschr. etc. XXIV, p. 148, differs in having a pair of branches on 

 all the joints, from 4 to 13); the branches in the species which I 

 have Seen were about equal to the joints in length, and seemed to 

 have about the same length in both sexes. — The species with one 

 row of branches form the genus Hemicteina Westw. Zool. Journ. 

 Vol. V; the perfect agreement in all the other characters induced 

 Loew, Linn. Ent. V. p. 386, to treat it merely as a subgenus. 



Rostrum prolonged like that of Tipula, with a distiuct, pointed 

 nasus; last Joint of the palpi rather short for a Tipula. 



Venation like that of Tipula; second posterior cell subsessile, 

 or entirely sessile; subpetiolate in O. argentina v. d. W. 



Legs in most of the species very long (like those of some of 

 the Tipulae lunatae); tibiae with spurs at the tip. 



The abdomen of the male is not, or is but very slightly club- 

 shaped, and has a forceps of a very simple structure. 



Such are the characters of the (eight) described and the unde- 

 scribed species, which I have seen in collections;. they are all south- 

 american. — 



I. Antennae bipectinate {Ozodicera s. s.): 1) apicalis Macq. 

 Loew, Linn. Ent. V, p. 389; 2) fumipennis Loew, 1. c; 

 3) xantliostoma Loew, 1. c. ; 4) argentina v. d. W. Tijdschr. 

 etc. XXIV, p. 147. 



