97 



the 31 remaining cases. Of these 26 reports, 3 were unfavorable, 19 favorable, 

 and 4 doubtful, concerning the success of the experiment. These doubtful cases 

 are not to be looked upon as unfavorable, but more evidence is needed to transfer 

 them to the list of favorable reports. These 19 out of 26 reports, or 73 per cent., 

 were decidedly favorable. The experiments will be continued during the season 

 of 1891. 



In presenting this paper I wish to acknowledge the invaluable aid continu- 

 ally received during the progress of the work from my assistants, Messrs. W. C. 

 Stevens and V. L. Kellogg. 



BOOK NOTICES. 



Butterflies of North America. Third Series — Part X. By W. H. Edwards. 



The last part of Mr. Edwards's superb work has just come to hand. It is of 

 exceptional beauty and interest. Special attention has been lately called to the 

 American species of the genus Argynnis, by the publication of Mr. H. J. Elwes's 

 "Revision of the genus Argynnis." (Trans. Ent. Soc. Lond. 1889. Part IV.) 

 and Mr. Edwards's Notes " thereon (^Can. Ent. XII. p. 82.) The present number 

 contains plates and descriptions of three species of this genus, the validity of 

 two of which has been questioned by Mr. Elwes. Plate I. illustrates the com- 

 plete life history of A. Alcestis by which it is shown that not only is it distinct 

 in the imago state from both Ai^hrodite and Cipris but also in its preparatory'- 

 stages. 



Plate II. Argynnis Adiante (male and female). This is a local Californian 

 species of which Mr. Elwes had only male specimens taken many years ago — from 

 what material he had he was inclined to regard it as merely a variety of either Zerene 

 or Monticola. It appears, however, that it is not such a rare species as he 

 supposed, and Mr. Edwards had ample material to show that this species is valid. 

 The male is figured from Dr. Boisduval's actual type. Dr. Behr, the well-known 

 San Francisco lepidopterist, writes of it that it is common in its season at the 

 proper locality, and further that unlike many Californian Argynnides it is very 

 constant. On the same plate as A. Adiante is figured another interesting species A. 

 Atossa (n. sp.) the male of which has been in Mr. Edwards's collection for twenty 

 years ; but the female was only discovered in 1889. From the figure it appears 

 to be very distinct from anything we have in our fauna. 



Plate III. shows Scdyrodes Canthus in great detail. The text of this plate 

 is very complete. Mr. Edwards has adopted Mr. Scudder's genus for this species 

 but believes the name Eurydice does not belong to it. — J. F. 



The Cave Fauna of North America, with remarks on the Anatomy of the 

 Brain and Origin of the Blind Species. By A. S. Packard, M.D. Vol. IV. ; 

 First Memoir — National Academy of Sciences. 4to., pp. 156. 



The author of this admirable volume is everywhere known throughout the 

 scientific world from his numerous works, especially on entomology, and has 

 obtained a deservedly high reputation in Europe as well as in America. This 

 reputation will, we are confident, be, if possible, enhanced by the elaborate mono- 

 graph before us. It contains many original observations of cave animals, some 

 careful scientific investigations, and a very interesting chapter of philosopaic 



7 (en.) 



