178 C. R. Osten Sacken: 



Ptilogyna (as figured by Westwood, Tr. E. S. Lond. 1881, Tab. 19, 

 fig. 14 b), Here agaiu we have to keep our opinion in suspense, 

 iintil more evideuce is forthcoming. (I have seen Macquart's type 

 in the Museum in Paris, but my notes about it are not conclusive.) 



In the Museum in Vienna I have seen still another australian 

 Tipula with pectinate antennae and without distinct nasus. The 

 incomplete notes which I took about it say that it differs froni Pti- 

 logyna in having, in both sexes, the branches of the antennae of 

 the same length; the first Joint of the antennae remarkably long; the 

 third with a Single brauch; the following six joints with two bran- 

 ches at the base and the third about the middle; in the female, the 

 latter brauch is replaced by a toothlike projection (I believe that the 

 tip of the antennae was broken off in the two specimens which I 

 saw); rostrum of a remarkable length, once and a half as long as 

 the head; forceps of the male of a simple structure, nevertheless 

 club-shaped, compressed from the sides; wings with the second 

 posterior cell sessile; the rest Tipula-\\\Q. 



Thus I have shown that several forms occur in Australia appa- 

 rently allied to Ptilogyna in, the absence of the nasus and in the 

 structure of the antennae, but which, on account of the incomple- 

 teness of our Information about them it is at present impossible to 

 locate. We must know more about them, before we can define the 

 genus Ptilogyna and either include those species in it, or form new 

 genera for them. 



IV. On the south-americaii Tipuliiia with pectinate 

 antennae. 



Three distinct forms belong4iere. First, Ptilogyna flahellifera 

 Loew, Linn. Ent. V, p. 392, from Brazil, already discussed under 

 the head of Ptilogyna. As we have seen, this species being provided 

 with a distinct nasus, cannot be considered a true Ptilogyna^ al- 

 though in the other parts of its Organisation, it seems to agree with 

 the australian species of that genus; thus its case remains for the 

 present in suspense. 



The two other forms are Ctedonia Philippi an-d Ozodicera 

 Westwood. 



Ctedonia. 



Philippi, Verb. Zool. Bot. Ges. 1865, p. 602, Tab. 23, f. 2. 



This genus was introduced for four species from Chili. One of 

 them, Ct. hicolor, is figured, and it is probably on the strength of 

 this iigure that Schiner, Novara etc. p. 32 and 34, somewhat hastily 



