CONTENTS 



Article 



Aldrich, J. M. New Diptera, or two-winged flies, from 

 America, Asia, and Java, with additional notes. No. 2932, 

 pp. 1-28. June 30, 1932 1 9 



New genera: Collinellula, Dyscrasis, Schislochilus, Trophops. 



New species: Ocnaea triviltata, Collinellula magislri, Leptocera 

 {Limosina) opaca, Dyscrasis hendeli, Kroberia floridensis, 

 Scatophaga gigantea, Sarcophaga (Blaesoxipha) valangae, Leski- 

 oniima jaynesi, Schislochilus aristatum, Zenillia palpalis, Trophops 

 clauseni, Exoristoides urichi, Achaetoneura nigripalpis. 



New variety: Scatophaga gigantea obscura. 



Alicata, Joseph E. A new trematode of the genus Urotrema 



from bats. No. 2928, pp. 1-4. August 11, 1932 ^ 5 



New species: Urotrema lasiurensis. 



Bartsch, Paul. A newly discovered West Indian mollusk 



faunula. No. 2929, pp. 1-12. July 6, 1932 ' 6 



New subgenus: Chondropomella. 



New species: Chondropoma (Chondropomium) wetmorei, Lucidella 

 beatensis, Eutrochatella beatensis, E. sphaerula, Ceratodiscus beaten- 

 sis, Cepolis wetmorei, C. lincolni, Plagioptycha (Monodonta) 

 beatensis, Thysanophora beatensis, T. alta, Urocoptis {Autocoptis) 

 beatensis, Macroceramus beatensis. Varicella beatensis. 



New subspecies: Cepolis trizonalis beatensis. 



Chandler, Asa C. Notes on the helminth parasites of the 

 opossum (Didelphis virginiana) in southeast Texas, with 

 descriptions of four new species. No. 2939, pp. 1-15. 

 August 15, 1932 1 16 



New species: Proalaria variabilis, Rhopalias macr acanthus, Aspi- 

 dodera harwoodi, Gnathostoma didelphis. 



Clark, Austin H. The forms of the common Old World 

 swallowtail butterfly {Papilio machaon) in North America, 

 with descriptions of two new subspecies. No. 2934, pp. 

 1-15. July 12, 1932 1 11 



New subspecies: Papilio machaon hudsonianus, P. m. petersii. 



Fowler, Henry W. The fishes obtained by Lieut. H. C. 

 Kellers, of the United States Naval Eclipse expedition of 

 1930, at Niuafoou Island, Tonga Group, in Oceania. No. 

 2931, pp. 1-9. August 15, 1932 1 8 



New species: Paramyrus kellersi, Salarias kellersi, S. niuafoouensis. 



I Date of publication. 



Ill 



