\^ol. XXviJ ENTOMOLOGICAL NEWS 



395 



slm, straight lateral muscle. 



s/>A, site of future spiracle of 8th abdominal segment. 



ts, testis. 



td. vas deferens. 



vim, ventral longitudinal muscles. 



The Roman numerals I-XI indicate abdominal segmenu i-ii re- 

 spectively. 



The names of the abdominal muscles are, as nearly as possible, those 

 employed by MaUula in Pfluger's Archiv f. Physiologic, cxxxviii, 

 PP J90-392. text fig. I. 2. 1911. 



An Aberration of Vanessa antiopa (Lcp.). 

 By Ernst Keil. Pasadena, California. 



(FlMc XVIL tc. ») 



The specimen figured on the accompanying plate was taken 

 on July 7th, 1914. at Granville. Ohio, on the Denison Univer- 

 sity campus by the writer. It was captured in the morning 

 sitting on the trunk of a walnut tree which was one of a large 

 number of trees that had been sugared the night before. The 

 specimen had been enjoying the remains of the night's ban- 

 quet. There were other specimens of Vanessa antiopa cap- 

 tured at the same place and time which were all normal. The 

 >] tnds 70 mm., three wings are normal 



a I t) of a male specimen. The left hind 



wing, however, has the blue dots missing altogether, the yel- 

 low edge is about 2 mm. broader than the edges of the other 

 wings and is of a whitish yellow. The rest of the wing is dull 

 black instead of reddish brown, and the vein structure is ex- 

 actly the same as that of the other wings. 



Do InMCts Migrate Like Birds? 

 Under this title, Howard J. Shannon discusses in Harper's Monthly 

 Magasime for September. 1915. the observed migrations, both northward 

 •nd southward, in the United States, of the monarch butterfly and of 

 dragonfiies like .-fNOX jumus. Me brirfly sums up the European data 

 also, on swamu of Odooata. He considers that insects in migration 

 follow much the same routes as do the birds, and concludes that "ac- 

 cunraUting evidences show that the principles and bws governing the 

 better-known bird migrations have a remarkable parallel in the annual 

 movements of certain members of the insect world." 



