46 THE CANADIAN ENTOMOLOGIST 



For several years I have spent the summer at Beach Bluff, 

 Mass., during which time I have seen the phenomenon under discus- 

 sion on only three occasions, each time in the afternoon: June 21, 

 1915, July 18, 1915, and Aug. 1, 1916. In each case there was a 

 light on-shore breeze with fair weather, and in none was the oc- 

 currence preceded by an unusually violent off-shore wind, though 

 on the day before the last a moderate land breeze was observed. 

 The insects were not washed up in such enormous numbers as in 

 the cases reported by Needham,* where the shore was blackened by 

 them for miles, but nevertheless the stranded insects were very 

 numerous, in some places forming a continuous line along the 

 beach. The occurrences which I observed were remarkable for 

 the large number of different species represented, with relatively 

 few specimens of each, unlike some of the previously reported cases 

 where the flotsam consisted largely of a single species in enormous 

 numbers. As noted by J. R. de la Torre Bueno in his paper on 

 the subject, t the collector finds in beach drift many species whose 

 retiring habits ordinarily save them from capture, and in the fol- 

 lowing list are a number whose presence in the \'icinity I had not 

 suspected. All the specimens recorded below were taken from the 

 sand immediately on being left by the waves, and I can thus vouch 

 for the fact that all actually took part in the flights over the water. 

 Those marked with an asterisk are mentioned in the list of ocean 

 <lrift Hemiptera given by Bueno. 



List of Species. 

 Scutelleridae. 



Eurygaster alternaia Say, Juh- 4, 1915. 



Cydnidae. 



Thyreocoris ater A. & S., June 21, July 18. (2) 



T. nitiduloides Wolff'., June 21. 



T. pulicarius Germ., June 21, July 18. (6) 



Pentatomidae. 



''"Pod ops cinctipes Say, June 21. 



'*Mormidea liigens Fab., June 21, July 18. (2) 



Dendrocoris humeralis Uhl., Juh" 18. 



* Insect Drift on the Shore of Lake Michigan, Occas. Mem. Chicago Ent. 

 Soc, vol. 1, No. 1, 1900. 



Beetle Drift on Lake Michigan, Can. Ent., vol. 36, 1904, p. 294. 

 t Heteroptera in Beach Drift, Ent. News, vol. 26, 191.5, p. 274. 



