VI TABLE OF CONTENTS. 



Noble, G. K. See Barbour, Thomas 609-620 



Rathbun, Mary J. Additions to West Indian tertiary 



decapod crustaceans. No. 2343. November 11, 1920 '-. 381-384 

 New species: Nephrops maoensis, N. aequus, Portunus oblongus. 



Shannon, Earl V. Analyses and optical properties of 

 Amesite and Corundophilite from Chester, Massachusetts, 

 and of chromium-bearing Chlorites from California and 

 Wyoming. No. 2342. November 10, 1920 ^ 371-379 



. Boulangerite, Bismutoplagionite, Naumannite 



and a silver-bearing variety of Jamesonite. No. 2351. 

 November 3, 1920 1 589-607 



. Notes on Anglesite, Anthophyllite, Calcite, Dato- 



lite, Sillimanite, Stilpnomelane, Tetrahedrite, and Trip- 

 lite. No. 2345. December 18, 1920 1 437-453 



. Recent accessions in the division of Applied 



Geology. No. 2339. November 10, 1920 ' 323-326 



. Some minerals from the old Tungsten mine at 



Long Hill in Trumbull, Connecticut. No. 2348. Novem- 

 ber 9, 1920 ^ 469-482 



Sturtevant, a. H. The dipterous genus Zygothrica of 



Wiedemann. No. 2330. September 9, 1920 ^ 155-158 



New species: Zygothrica aldrichii. 



Thomas, Oldfield. Report on the mammalia collected by 

 Mr. Edmund Heller during the Peruvian Expedition of 

 1915 under the auspices of Yale University and the 

 National Geograpliic Society. No. 2333. November 10, 



1920 ^... -" 217-249 



New species: TJolochilus incarum. 



Treadwell, Aaron L. A new polychaetous annelid of the 

 genus Nereis from Brazil. No. 2347. November 8, 



1920^ 467-468 



New species: Nereis brevidrrata. 



Van Cleave, H. J. Two new genera and species of Acantho- 

 cephalous worms from Venezuelan fishes. No. 2346. 



December 21, 1920^ 455-466 



New genera: Pandoseniis, Quadrigyrus. 



New species: Pandosentis iracundus, Qundrigyrus torquatus. 



New family: Qvxidrigyridae 



> Date of publication. 



