160 THE CANADIAN ENTOMOLOGIST. 



T:on of the additions to the hst of new species are to be found in 

 lae Hesperidse, to which 56 have been added. Many additions have also 

 been made to Melitaea, Thecla and Argynnis. A new and excellent 

 feature is a copious index of genera and species, which will be much -ap- 

 rireciated by all who have occasion to consult its pages. In this cata- 

 logue the author has given us the full benefit of his long experience and 

 careful study, and has produced a work which will not only commend 

 itself, but will be indispensable to all who are engaged in the study of 

 American butterflies. 



CORRESPONDENCE. 



Dear Sir : In the last No. of the Entomologist appears a description 

 ijf E. Provancheri by M. L'Abbe Provancher, in which the species is 

 credited to British Columbia. This is a mistake, as the specimens con- 

 tributed to him, and from which the description was made, were bred 

 from cocoons of A. Luna, collected in Muskoka, a little south of Brace- 

 bridge, by Mr. R. Mosey, who handed them to me. 



W, Brodie, Toronto. 



Dear Sir : On page 107 of the present volume of the Can. Ent.j 

 Mr. Frederick Clarkson gives an account of his " Seaside Captures," and 

 at the close of the paper says : " Among the treasures of the beach I 

 collected several shells perforated in every part by the young of one of the 

 lower order of Crustaceans, and rendered immaculate by the washing of 

 the tide and the sun's rays." A little further on he continues : " The 

 rnouth parts of these Sea Worms, or Barnacles, are strong and corneous, 

 and are capable of excavating galleries in the hardest substances." 



Mr. Clarkson is in error in ascribing this tunneling of the shells to a 



Crustacean, for it is the work of a species of sponge (Cliona). If some 



of the recently cast up shells are broken open, the sponge will be readily 



seen, and its structure may be examined. It burrows in marble, as he 



describes, and particularly in the oyster, though also in other shells, such 



as Natica and Pyrula. 



Wm. T. Davis, Tompkinsville, Staten Island. 



