62 LIST OF CONTRIBUTORS. 



Gunn, James Alexander, Jr. See Jordan, David S., and J. A. 



Gunn, Jr. 

 Gwatkin, H. M. and Henry Suter. Observations on the dentition 



of Achatinellidse. P '95, 237 

 Haines, Reuben. Analysis of philadelphite. P '80, 310 

 Haldeman, Samuel Stehman. An analysis of marl from New 



Jersey. J viii, 150 



Description of five new species of American fresh- water shells. 



J viii, 200 



Descriptions of two new species of the genus Perca from the 



Susquehanna River. J viii, 330 

 — ■ Description of a new species of Cyclops, and two species of 



Tubifex. j viii, 331 

 — Descriptions of four species of Cyc'las, three of which belong 



to the subgenus Pisidium, and two species of Cypris. P '41, 53 



— Facts in ornithology. P '41, 54 



— Descriptions of two new fresh-water shells. P '41, 78 



— Description of a new species of fresh waiter shell. P '41, 103 



— Remarks on unios. P '41, 104 



— Note on a genus of dolphins. P '41, 127 



— Three new species of Unionidae. P '42, 142 



— Description of two new species of Cypris; and a genus of 

 Sterelmintha presumed to be new. P '42, 166 



— Description of two species of Entomostraca and two Hy- 



drachnae. P '42, 184 



— Description of a new species of Cypris. P '42, 184 



— Remarks on nomenclature. P '42, 176, 187, 190 



- — ■ Description of two new species of Hydrachna and one of 

 Daphnia. P '42, 196 



— Descriptions of North American species of Coleoptera, pre- 



sumed to be undescribed. P '43, 298 



— On Indian relics. P '43, 269 



— Catalogue of the carabideous Coleoptera of south-eastern 

 Pennsylvania. P '43, 295 



— Description of a new species of Pasimachus. P '43, 313 



— Descriptions of insects, presumed to be undescribed. P '44,53 



— On Corydalus cornutus. P '45, 192 



— Remarks on Unio crassus. P '46, 15 



— Description of Unio abaeoides. P '46, 75 



— On several new genera and species of insects. P '46, 124 



— Descriptions of several new species and one new genus of 

 insects. P '47, 149 



