TABLE OF CONTENTS. 



Bartsch, Paul. A monograph of West American Mela- Page, 

 ncllid mollusks. No. 2207. August 13, 1917 ^ 295-356 



New genus: Eulimostraca. 



New species: Melaiulla (Melanella) dalli, M. (M) ochsneri, M. (if.) 

 monicensis, M. (M.) necropolitana, M. (M.) oldroydi, M. (M.) 

 panamensis, M. (M.) cali/omica, M. {M.)hem,philli, M. (M.) baldra, 

 M. (M.) mezicana, M. (M.) abreojosensis, M. [M.) tacomaensis, 

 M. (Balcis) draconis, M. (B.) montereyensis, M. (B.) peninsularis, 

 M. (B.) lastra, M. (B.) arnoldi, M. (B.) cosmia, M. (B.) halia, M. 

 (B.) townsendi, M. (B.) columbiana, M. (B.) comoxensis, M. (J5.) 

 macra, M. (B.) berryi, M. (B,) prefalcata, M. (B.) grippi, M. (B.) 

 taravali, M. (B.) catalinensis , Eulimostraca galapagensis, Sabinella 

 chathamensis, S. bakeri, S. meridionalis, Haliella abyssicola, H. 

 chilensis, Strombiformis riversi, S. alasJcensis, S. cali/omica, S. 

 townsendi, S. lapazana, S. almo, S. panamensis, S: barthelowi, S. 

 hemphilli, S. burragei, Niso excolpa, N. lomana, N. hipolitensis, 

 Lambertia cookeana. 



Beard, R. E. See Thomas L. Watson 553-563 



New subspecies: Melanella (Melanella) micans borealis. 



CocKERELL, T. D. A. Some insects from Florissant, Colo- 

 rado. No. 2210. June2,1917i 389-392 



New species: Tenthredella oblita, Paleotaxonus vetus, Eriocampoides 

 mimus, Plecia decapitata, Dioctria (?) pulveris. 



CuRRiE, Bertha P. Gomphus parvidens, a new species of 



dragonfly from Maryland. No. 2199. June 1, 1917 "... 223-226 

 New species: Gomphus parvidens. 



CusHMAN, R. A. A revision of hymenopterous insects of 

 the tribe Cremastini of America north of Mexico. No. 

 2219. August 22, 1917 1 503-551 



New genus: Neocremastus. 



New species: Pseuderipterntis brevicauda, P. gracilipes, Cremastus 

 (Cremastv^) longigenalis, C. (C.) longiventris, C. (C.) ruficeps, 

 C. (C.) gracilis, C. (C.) gracilipes, C. (G.)flaviceps, C. (C.) gradli- 

 ventris, C. (C.) minor, C. (C.) brevipetiolus , C. (C.) platynotae, C. 

 (C.) tortricidis, C.(C.) brevicauda, C. C. evetriae, C. (C.) epagoges, 

 C. (Zaleptopygus) rostratus, C. Z. cleridivorus,C. (Z.) similis, C. (Z.) 

 plesius, C. (Z.) rosae, C. (Z.) tetralophae, C. (Z .) terebratus , C. (Z.) 

 mordellistenae, C. (Z.) rohweri, C. (Z.) anomalus, C. (Z.) nigricly- 

 pealis, C. (Z.) bilineatus, C. (Z.) gallaecola. 



I Date of publication. 



