Il8 ENTOMOLOGICAL NEWS [April, ? 2O 



collection of the Smithsonian Institution. Four papers fol- 

 lowing this were descriptive of new North American diplopods. 

 Wood's work on this group culminated in "The Myriapoda of 

 North America" (1865), in which most of his previous work 

 was incorporated and which is still the only single paper dealing 

 with the North American Chilopoda or Diplopoda as a whole. 

 This for the time was an excellent memoir, exhibiting ac- 

 curacy of observation and a balanced systematic judgment, 

 and showing careful attention to variability and an apprecia- 

 tion, e. g., of the prime importance of the copulatory organs 

 of diplopods in the discrimination of species. Two brief 

 supplementary papers descriptive of additional new North 

 American species appearing in 1867 concluded Wood's work 

 on the Myriopoda. 



R. V. CHAMBERLAIN, Cambridge, Massachusetts. 



In the summer of 1883, Dr. Wood was a member of an 

 expedition to Texas under Colonel, then Major W. R. Liver- 

 more, his son, Dr. George B. Wood, writes us. 'This was one 

 of a series of explorations for the purpose of finding water, 

 recommending places for roads and new army posts and a 

 correction of old state surveys, when Col. Livermore was 

 triangling the State of Texas west of the Pecos River." On 

 this expedition, either, near El Paso or in the valley of 

 'Tornellias" [Tornillo] creek in the great bend of the Rio 

 Grande, more likely the latter,* Dr. Wood collected two speci- 

 mens of a "bright brilliant green [beetlej with a slight golden 

 lustre from the surface, tarsi violaceous, legs bright green, 

 tibiae distinctly golden externally," described by Dr. George 

 H. Horn in the Transactions of the American Entomololgical 

 Society, xii, page 124, as Plusiotis woodii, and dedicated to 

 his friend. 



*See Ent. News, xvi, p. 290, xxii, p. 356. A brief account of lhi> ex- 

 pedition, which starte:! July I and broke up at: the end of October, is 

 contained in Major Livermore's report in the 'Report of the Chief of 

 Engineers, U. S. Army for 1884, part II!, pp. 2394 2395, \Ya>hin^ton, i.ss |. 



