270 ENTOMOLOGICAL NEWS [XXXI, '20 



maritima, Circotettix venuculatiis and Melanoplus pimctidatus are par- 

 ticularly fine, although all of such verbal sketches are good. The data 

 presented (pp. 481 to 482) on the probable stridulation of species of spine- 

 breasted locusts (Locustinae) is interesting and should stimulate further 

 observation along these lines. 



The author's picture (p. 495) of the repopulation of glaciated land, in 

 treating of Podisma variegata, well deserves quotation. "Not by ex- 

 tended flights of many miles at a time was the land in the wake of the 

 retreating ice-sheet repeopled by this species, but by hopping, hopping, 

 hopping, a foot or a yard at a time, pressing northward as the vegetation 

 and circumstances permitted, clambering up the mountains as fast as 

 the forest line advanced, dying out in the southern areas and on dry 

 slopes as 'the fatal sea of warmth filled the valleys below' and swept on- 

 ward far to the north, until now such colonies as that on the summit of 

 Ascutney Mt. are forever cut off from their kind." 



Another species definitely and correctly recorded from New England 

 for the first time is Melanoplus dawsoni, while some additional light is 

 given upon the surprising occurrence of the western Phoetaliotes nebras- 

 censis in New England. 



The Glossary is most useful and quite extensive, the "Accented List 

 of Scientific Names" is welcome and the "Index" quite full. 



Of the twenty plates, three are originals in color, eight are black and 

 white plates of details, in large part original, one plate of crickets is taken 

 from a paper by E. M. Walker, three plates in colors of tree crickets are 

 from Fulton's study, a set most desirable to have republished in a work 

 of this character, and five plates are of habitat photographs. 



The author has labored for years in his all-too-few spare hours on this 

 splendid paper and his fellow students have eagerly awaited its appear- 

 ance. We need say in summarizing only this — it has met every expecta- 

 tion in scholarly, dignified fashion, it is more than a "Manual," it is 

 instead a monograph. It will soon be one of the much thumbed works 

 of constant reference in the library of the student of the order. 



J. A. G. R. 



Correction 



On page 235 of the October, 1920, News, in the review of Blatchley's 

 "Orthoptera of Northeastern America," the words "original constancy" 

 are used in the fifteenth line. The words intended were "regional con- 

 stancy," and the line as printed might convey a meaning quite the reverse 

 of that intended by the reviewer. 



