205 



have endeavored to give the entomology of the Centennial 

 Exhibition as fully as the limited space allowed this article 

 will permit. Geo. Dimmock. 



BIBLIOGRAPHICAL RECORD. 



Authors and Societies are requested to forward their works to the Edi- 

 tor at the earliest date possible. We ask our renders to inform us of the 

 publication especially of those works which are not generally consulted by 

 entomologists. B. Pichnan Maun. 



(Continued from page 200.) 



Nos. 618 and 619 are from The Annals and Mag. Nat. 

 Hist., ser. 4, vols, xvi, xvii. 



* 618. A. R. Grote. The Effect of the Glacial Epoch 

 upon the Distribution of Insects in North America. xvi, p. 

 440-442. 



[Reprint from Amer. Journ. Sci. and Arts, vol. ex (ser. 3, vol. x), p. 

 335-338.] "A brief statement of the phenomena assumed to have attended 

 the advent of the glacial period," and of "the action presumed to have 

 accompanied " the retirement of the ice-sheet, in the endeavor " to show 

 that the present distribution of certain insects may have been brought 

 about by the phenomena." [Cited also in Rec, Nos. 507 and 586.] 



* 619. Prof. T. Thorell. On the Classification of Scor- 

 pions, xvii, p. 1-15. 



An " attempt at a systematical arrangement of the order of Scorpions, 

 based on the examination of a rather limited number (about 90) of spe- 

 cies." Historical and critical review of some previous writings ; remarks 

 on nomenclature in general. Defines synoptic-ally 30 genera of 4 families, 

 with citation of types and bibliographical and descriptive foot-notes. De- 

 scribes Lepreus, Phassus, Rhopalurus, Hadrurus, Iurus, Uroctonus, Pandi- 

 nus, Palamnaeus, Miaephonus, Hormurus, Ioctonus, Euscorpius — 12 n. 

 gen.; describes 7 (Vejovis intrepidus from Mexico, Uroctonus mordax from 

 California = 2 X. A.) n. spp. [See Psyche, vol. i, p. 209-214.] 



* 620. The Report of the Entomological Society of 

 Ontario* 1873, including a Report on some of the Noxious, 

 Beneficial and Common Insects of the Province of Ontario. 

 Prepared for the Honourable the Commissioner of Agriculture 

 on behalf of the Society. Printed by Order of the Legislative 

 Assembly. Toronto : 1874. 8vo. pg. 4, 41, fig. 1-31, contains 

 the following, and Nos. <'>:M to 625. 



Title, Contents. Annual business reports and report of the annual 

 meeting; annual address of the President (C. J. S. Bethune) [history of 



