IV CONTENTS 



Page 



Easton, Alan M. A revision of the Nearctic species of the 

 beetle genus Meligethes (Nitidulidae), Figures 76-78. 

 Pubhshed February 25, 1955 87-103 



New species: Meligethes canadensis. 



Fkiedmann, Herbert, and Smith, Foster D., Jr. A fur- 

 ther contribution to the ornithology of northeastern Vene- 

 zuela. Figures 103-107 and plates 27-30. Published 

 December 2, 1955 463-524 



GiNSBURG, Isaac. Fishes of the family Percophididae fron 

 the coasts of eastern United States and the West Indies, 

 with descriptions of four new species. F.gures 120-122. 

 Published October 13, 1955 623-639 



New genus: Chriomystax. 



New species: Chriomystax squamentum, Bembrops magnisquamis, 

 B. macromma, B. anatirostris. 



Glenny, Fred H. Modifications of pattern in the aortic 

 arch system of birds and their phylogenetic significance. 

 Figures 108-119. Published December 16, 1955 .... 525-621 



HowDEN, Henry F. Biology and taxonomy of North 

 American beetles of the subfamily Geotrupinae with re- 

 visions of the genera Bolbocerosoma, Encanthus, Geotrupes, 

 and PeUotrupes (Scarabaeidae). Plates 1-18. Published 

 November 28, 1955 151-319 



New species: Bolbocerosoma cartwrighti, B. ritcheri, B. elongatum, 



PeUotrupes youngi. 

 New subspecies: Bolbocerosoma piisillum townesi, Eucanthus 



lazarus subtropicus, PeUotrupes profundus dubius. 



Hyman, Libbie H. Some polyclad flatworms from the West 

 Indies and Florida. Figures 81-89. Published May 2, 

 1955 115-150 



New genera: Jndistylochus, Anandroplana, Crassandros. 



New species: Adenoplana antillarum, Indistylochus hewatti, An- 

 androplana mtiscularis, A. portoricensis, Crassandros dominicantis, 

 Prosthcceraeus floridanus, Acerotisa muUicelis. 



