186 PROC. ENT. soc. WASH., VOL. 21, NO. 8, NOV., 1919 



of trees. The origin of the beetle is uncertain but it comes pre- 

 sumably from Japan, at any rate there is nothing similar known 

 from the United States and the aspect of the species is that of 

 a Palearctic species." 



A single specimen of this species was also collected by Mr. 

 F. C. Pratt at St. Elmo, Virginia, a few miles below Washington. 



This species was first described by Reitter (1877, Deutsche 

 Ent. Zeitschr. XXI, p. 379) from Japan and placed in the genus 

 Ptilinus, probably on account of the shape of the antennae. In 

 1879 (Deutsche Ent. Zeitschr. XXIII, p. 317) Kiesenwetter de- 

 scribed the same species from Japan as Ptilinus ramicornis. 

 Reitter (1901, Best.-Tab. XLVII, p. 24) erected the genus Ptili- 

 neurus for marmoratus Reitt. and placed Ptilinus ramicornis 

 Kiesw. as a synonym of it, but still retained the genus in the 

 group with Ptilinus. 



This species is not closely related to Ptilinus, but in habits and 

 structural characters it should be placed in a new tribe near 

 Hedobiini, the margined thorax and exposed vertical pygidium 

 will not allow it to be placed in that tribe. The species super- 

 ficially resembles Hedobia granosa Lee., but the exposed vertical 

 pygidium will at once distinguish it from any other known 

 American Ptinid. 



NOTES ON THE SEASONAL ACTIVITY OF TABANEDAE 

 IN THE LOWER EVERGLADES OF FLORIDA. 



BY C. A. MOSIER, Warden, Royal Palm State Park, Dade Co., Fla., AND 

 T. E. SNYDER, Bureau of Entomology. 



Since 1916, notes on the seasonal activity of Tabanids in 

 southern Florida have been recorded in these Proceedings, es- 

 pecially the flight of Tabanus americanus in large numbers at 

 dawn. Apparently, species of Tabanus are active during every 

 month of the year; this, however, includes belated "stragglers" 

 or specimens that emerge very early. 



At Paradise Key, in the Lower Everglades, Tabanus lineola 

 was overabundant on the prairies and common in the hammock 

 during late July and early August. On the prairie these flies 

 were especially common where the land has been farmed and is 

 now covered with a heavy growth of weeds and grass some ten 

 feet high. Further into the natural prairie where less or no farm- 

 ing had been done, they diminished in numbers until near the 

 the seashore there were none. 



On August 30, 1918, Mosier noted that all the saw palmettoes 

 (Seronoa) from which the leaves had been cut in April and on 



