VI TABLE OF CONTENTS. 



Page. 



Parker, John Bernard. A revision of the Bembicine wasps 

 of America north of Mexico. No. 2173. February 10, 

 1917^ 1-155 



New genus: StietieUa. 



New Species: Steniolia nigripes, S. alMcantia, 8ticUeUa mela- 

 nostema, S. callista, S. bituberculata, S. melampous, S. 

 megacera, S. divergens, Bicyrtes annulata, B. gracilis, Bem- 

 bix arcuata, B. hinei, B. stenobdoma, B. rugosa, B. foxl, 

 B. comata, B. melanaspis, B. helianthopolis, B. latifram, 

 Microbembex aurata, M. hirsuta. 



Radcliffe, Lewis. Description of a new goby, Garmannia 

 spongicola from North Carolina. No. 2185. February 

 8, 1917 1 423-425 



New species: Garmannia spongicola. 



Rathbun, Mart J. New species of South Dakota cretaceous 



crabs. No. 2182. February 23, 1917 ^ 385-391 



New superfamily : Dakoticancroideae. 

 New family : Dakoticancridae. 

 New gemis : Dakoticancer. 



New si:)ecies: Dakoticancer ovcrana, Homolnpsis punctata, 

 Campylostoma pierrense. 



Smith, Frank. North American earthworms of the family 

 Lumbricidae in the collections of the United States Na- 

 tional Museum. No. 2174. February 8, 1917 ^ 157-182 



New species: Helodrilus welcJii. 



Thompson, Joseph C. The variation exhibited by Thamno- 

 phis ordinoides (Baird and Girard), a garter snake in- 

 habiting the San Francisco Peninsula. No. 2179. March 

 7, 1917 1 345-366 



Treadwell, Aaron L. A new species of polychaetous an- 

 nelid from Panama, with notes on a Hawaiian form. 



No. 2186. February 8, 1917^ 427-430 



New species: PhyUodoce panaitiensis. 



Wetmore, Alexander. On certain secondary sexual char- 

 acters in the male ruddy duck, Erismatura jamaicensis 

 (Gmelin). No. 2191. February 8, 1917^ 479^82 



WiCKHAM, H. F. New species of fossil beetles from Floris- 

 sant, Colorado. No. 2189. February 23, 1917^ 463-472 



New genus: Brachyspathus. 



New species: Platynus insculptipennis, Cratacanthus fioris- 

 santensis, Harpalus ulontaeformis, H. rediviims, Anatis re- 

 surgens, Brachyspathus curiosus, Podabrus c.upesoides, 

 Malachius immurus, Vrilletta monstrosa, Spondylis terti- 

 arius, Callidium grandaevum, Bruchus antaeus, Pandeletei- 

 nus nudus, TycJiius fcror, fi<nis prinialis. 

 1 Date of publication. 



