116 



Dr. Packard gives a similar history for 1876, and gives 

 general histories of the ravages of tlie locust in Colorado and 

 Utah, collecting evidence from a great number of sources. He 

 also cites proof of the appearance of these insects in Cali- 

 fornia, and discusses the probable extent of their natural breed- 

 ino- o-rounds. In connection with the theory of their enfeeble- 

 ment in moist regions, he gives some curious experiments, 

 made by Prof. Samuel Aughey, on the comparative strength of 

 the hind legs of individuals from Nebraska and Utah, clearly 

 to the advantage of the natives of the latter state. He also 

 discusses the relation of their migrations to meteorological 

 phenomena, and publishes some interesting tables furnished for 

 the purpose by the Weather Bureau. He adds some interest- 

 ing notes on the habits of the locust, and describes the insects 

 from life, at every stage, making out that it has three larval and 

 two pupal stages, by considering the penultimate stage, before 

 the acquisition of full-grown wings, a pupal rather than a larval 

 condition. 



This review gives an account of the observations, during 

 1877, of forty-one different writers, including seven who have 

 discussed injurious insects only. This seems to me a sorry 

 number for the whole of North America ; but, on the whole, 

 I believe we may fiirly congratulate ourselves that the biolog- 

 ical side of entomology has made a considerable advance ; at 

 least we will hope that another year will show an increase of 

 earnest work, with promise of greater progress. 



Samuel H. Scudder. 



[On account of a prevailing unfamiliarlty, especially amongst the European sub- 

 scribers to Psyche, witli the English names Used for butterflies in the foregoing article, 

 the editors deem it advisable to say that the blue butterflies are the Adokscentes of 

 Scudder or a part of the Lycaeninae of Edwards; the brush-footed butterflies are tlie 

 Nymphales of Scudder or the Nyniphalidne oi Edwards; the hair-streaks are the Ar- 

 mait of Scudder or the Theclinae of Edwards; the orange-tips are the Frugalia of 

 Scudder or genus Ant.hocharis of Edwards; the skippers are the Urbicolae of Scudder 

 or the Heqyeridae of Edwards; the swallow-tails are the Equites of Scudder or the Pa- 

 pilioninae of Edwards; the yellows are the Fugacia of Scudder or a part of the Pieri- 

 nae of Edwards.] 



