Vol. XXVi] ENTOMOLOGICAL NSWS. 167 



Driven to the South by failure of health. I have taken up 

 my residence in Dallas. Texas. Here the nights of March 

 31st and April ist. of 1913. were vtry dark, very warm and 

 sultry. In the evening there was a huge halo of insects g>'rat- 

 ing around an arc light near my house. The ground beneath 

 was Mack with beetles, Cahsoma scrutator in great mnnbers, 

 Carabtu lugubris. big black water beetles and two large 

 species of Dytiscidae. with Lachnostemas by the handful. 

 Now and then plump white moths whacked down on the 

 roadway, and proved to be the wdl-known moth of the salt 

 marsh caterpillar of Harris — Estigmetu acrara, Drury— often 

 excessively abundant in the middle states. I secured a great 

 many specimens and made a beautiful plate of nature-prints 

 illustrating the wide variation of the species in size and the 

 numl)er and proftortions of the black dots. Applying my 

 thumb and forefinger of the left hand to the sides of the ab- 

 domen of a male, I moved them sk>wly and firmly down 

 toward the anal portion of the abdomen, when to my great 

 surprise and delight, the kMig-soofht abdominal process shot 

 out of the last segmental line on the ventral side and waved 

 back and forth as of old. In one specimen the anal segment 

 lifted itself upward strongly and gave so fine a view of the 

 affair that I seized my pencfl and got a fairly good drawing 

 of the structure, though I have no facility in that work and 

 certainly no fdidty. I have reproduced this sketch as text 

 fig. I. accompanying this article. As the prctsare jncrcisfn 

 near the end of the body, the anal segment lifts ttsdf 

 upward more or less and the last soture begins to widen. To 

 the right and left laterally, first appear in the widening aper- 

 ture, the tips of two brushes of hair, when suddenly, always 

 amusingly stiddenly. there shoot out two flesh-colored, cun-ed. 

 tapering, tubular processes, united at the base, and with a 

 brtish of hair at the ends. The sides of the tubes are some- 

 what crenulated. as if segmented, although that docs not seem 

 to be really the truth, and there is a rather scanty growth of 

 delicate, brownish hair along and around the tubes. Their 

 constant waving gives the impression that they are alive. I 

 verified this observation in the fall of 1913 and in April and 



