374 [Berliner Entomolog. Zeitschrift Bd. XLI, Jahrg. 1896, Heft IV.] 



The gcnus Phyllolabis Ü. S. (Dipt, Tipul.); 



a reniarkable case of disconnectcd arcas 



in geographica! distribution, 



C K. Osten Sackei 



It was in July 1853, tliat (he Norwcgian eutomologist H. Siebke, 

 who ilieil about 1876') as Director of thc Zuutoniical Museum in 

 Christiania, discovered in thc Norwegian alpine rcgions a Tipulid, 

 Avhich he dcscribed as Limnohia macrotira (s\c\) in thc Nyt. Mag. 

 etc. 1863, p. 179 (thc dcscription is also found in bis posthumous 

 work: Enumcr. ins. norvv. Diptera, p. 226, 1877). Üther abun- 

 dant spccimcns were found by him in 1861 in another Norwegian 

 locality. Later, Mr. Bergroth received several speeimens from Lap- 

 land, and to him belongs the merit of identifying this species with 

 thc genus Phyllolabis 0. S., two species of which were discovered 

 by nie in several localities in California, in March and April 1876. 

 (Bergroth, Wien. Ent. Zeit. 1889, p. 116; 0. Sacken, Western 

 Diptera, 1877, p. 202). In August 1882, Prof. Strobl discovered 

 the same P. macrura in the Alps of Upper Styria (Wien. Ent. 

 Zeit. 1892, p. 182), and latcr in other localities of the same region 

 (Strobl, Die Dipt. v. Steyermark, 3. Theil, p. 118, Grätz 1895; 

 originally published in the Mittheil. d. Naturw. Ver. f. Steyerm. 1894). 



A passage in Bergroth's above-(iuoted notice about P. ma- 

 crura niade me doubt the correctness of bis incorporation of it in 

 my Californian genus. Reeently, and at my request, Prof. Strobl 

 very obligingly sent me two speeimens icfQ) of the species, which 

 convinced me that Bergroth was right, and that he had thus dis- 

 covered a very reniarkable case of a disconnected area of generic 

 distribution. It was very fortunate for me in this connection, that, 

 on my return to Europe in 1877, I had brought with me a pair (r/Q) 



^) I do not know the exact date. 



