I line 1890.] 



PSYCHE. 



363 



The fossil insect localities in the 

 ROCKY MOUNTAIN REGION. — No One Collect- 

 ing fos.'iil insects in the Rocky Mountain 

 region could fail of noting how close was 

 the general resemblance of the rocks at all 

 places where they have been found, ex- 

 cepting at Florissant, where the fine, 

 tough, homogeneous shales found else- 

 where give place to friable masses of ash 

 interlarded with thin seams of hardened mud. 

 A comparison of the insect remains shows a 

 similar difference. The hjmenoptera which 

 abound at Florissant almost disappear in the 

 other localities, while the coleoptera, which 

 hold a third place at Florissant, form the 

 larger proportion of the mass in the other de- 

 posits. To test the opinion formed by the 

 cursor}' examination of specimens in the field, 

 I have counted the specimens obtained in 

 each of the different localities visited during 

 a single summer, and find the opinion amph' 

 confirmed. The localities visited besides 

 Florissant, Colorado, were Roan Mountains 

 in western Colorado, the lower White Riveri 

 Colorado, and Green River, Wyoming. 



The first set of columns in the accompany- 

 ing table shows the total number of specimens 

 (regardless of species) obtained during the 

 season's work, separated by orders, (i) in all 

 localities; (2) at Florissant alone ; and (3) in 

 theother localities, excluding Florissant; and 

 the second set of columns the same figures 

 reduced to percentages. Nothing could well 

 be more striking than the contrasts in the 

 hymenoptera and coleoptera. 



6". H. Scudder. 



Entomological Notes 



Entomological Club, A. A. A. .S. — The 

 meeting of the club will be held at Indian- 

 apolis, Ind., on Wednesday the 20th of 

 August at 9 A.M. Prof. A. J. Cook of the 

 Michigan Agricultural College is the presi- 

 dent. 



The venerable naturalist. Prof. Felipe 

 Poey of Havana, well known to entomolo- 

 gists for his valuable papers on Cuban in- 

 sects, completed his ninety-first jsear on the 

 26th of last May. He still occupies himself 

 with nattiral history studies, and particularly 

 ichthyology-. 



The Butterflies of the Eastern United 

 States and Canada, issued last year by the 

 author, Samuel H. Scudder, will hereafter 

 be published by Messrs. Houghton, Mifflin 

 «& Co. of Boston, the publishers of Edwards's 

 Butterflies of North America. 



The Rev. Seymour St. John's little book 

 just published in England, called "Larva 

 collecting and breeding" would better have 

 been given simply its second title, "a hand- 

 book to the larvae of the British Macrolepi- 

 doptera and their food plants," for there is 

 nothing in it about collecting or breeding. 

 It is simply a list of species and their ac- 

 credited food plants and the same reversed. 

 To an Amei'ican the lists seem full. The 

 best equipped caterpillais are, for butterflies 

 Euckloe cardainines which has 10 food 

 plants, and for the nioths Acroiiycta aim' with 

 15. Some of the plants are fed upon by a 

 very large number of different caterpillars. 

 Thus a list is given of 104 species feeding on 

 ^uercus robnr, Betula alba has 84, Salix 

 caprea 74, Crataegus oxyacantha 60, Polygo- 

 num aviciilare 48. and so on. 



The Instituto de segunda ensenanza of 

 Havana has just acquired the valuable ento- 

 mological collections of Dr. Juan Gundlach 

 who is still untiringly at work, in his eighti- 

 eth vear, on the Cuban fauna. Of his Ento- 



