172 0. M. Osten Sacken: 



phura; but the third Joint of the antennae is not as elongate, as in 

 Ä^iphura. 



10. CtenopJiora fuscipennis Macq. D. E. Suppl. I, p. 10, Tab. 1, 

 f. 4, Said to be from Brazil. This is the only Ctenopliora as yet 

 recorded from South -America. It must be closely allied to Psel- 

 liophora, and has white rings like the species of that genus. 

 Mr. V. d. Wulp, Tijdschr. etc. XXIII, p. 157 was even struclc by its 

 apparent resemblance to Ps. javanica. I would not admit C. fusci- 

 pennis Macq. as a south-american species, without further verifi- 

 cation. 



4. Summary notice on the geographica! distribution 

 of the Cteiiophorae. 



The distribution of the forty odd described Ctenophorae (one 

 Dictenidia, ten Xiphurae, twelve Ctenophorae s. s., sixteen Psel- 

 liophorae, one Prionotus, and two species of doubtful location) 

 is as follows: 



nine in Northern and Central Europe (1 Dicten., 2 Xiph., 



6 Ctenoph.). 

 two in Southern Europe (JTipA. fulvida Bigot, Ctenoph. 



fastuosa Lw.). 

 one in Eastern Europe and Siberia {Cten. vittata). 

 five in Siberia (4 Xiph., 1 Cten.), 

 one in Northern Persia {Cten. magnifica Lw.) 

 sixteen Pselliophorae in South -eastern Asia, including 

 China. 

 The most remarkable results of this survey are: 



1. The total absence of Ctenophorae 1) from Australia (including 

 New Guinea), nothwithstanding the abundance of Pselliophorae in 

 the Indo-Malayan archipelago ; 2) from Africa, and 3) from the whole 

 of America south of the United States. I have already stated that 

 the occurence of Ct. fuscipennis ■ Macq. in Brazil, requires confirma- 

 tion. In Australia and in S. America Ctenophorae are replaced 

 by other pectinicorn genera, as we shall see in the next paragraphs ; 

 from Africa we have nothing yet. 



2. The comparatively considerable number of Ctenophorae already 

 recorded from, and peculiar to, Siberia, a region the dipterological 

 fauna of which is as yet so very little explored. • Four Xiphurae 

 from the environs of Irkutsk alone, besides one Ctenophora s. s. ! 



