INDEX. 



Abrocoma oblativa 220 



Acanthochalcis nigricans 193 



unlspinosa 19* 



Acanthorhodeus asmussi 310 



Achias dispar 155 



Achrysocharella partiaeneiceps 197 



Silvia 197 



Achrysocharis camilli 19S 



Achrysopophagus io. 



187 



nigricorni? 1^7 



rex 18S 



Acmaea asmi 



insessa 



instabilis 



mitra 



paleacea 



patina 



pelta 



persona 



scabra 



spectrum 



Adamsiella aripensis 



chordata 



grayana aiireolabre 



jarvisi 



monstrosa 



pulchrior 



Adamsiellops antiguense 



ignilabre 71 



Aenocyon ayersi 95, 142 



dims Ill 



Agouti thomasi 220 



Akodon aerosus 237 



boliviensis 237 



(Chalcomys) aerosus baliolns 237 



mollis 236 



altorum 240 



orientalis 240 



orophOus 240 



surdus 236,239,240 



Alces americauus 125 



Alexander, C. P., and W. L. McAtee. Dip- 

 tera of the superfamily Tipuloldea fotmd 



in the District of Columbia 385 



Alisodon mirus 132 



( AUotria) kleidotoma avenae 182 



Alouatta seniculus 220 



Alvania compacta 3 



Ameiva Ameiva petersii 614 



Amesite and ConindophUite from Chester, 

 Massachusetts, and of chromium-bearing 

 Chlorites from California and Wyoming, 

 analyses and optical properties of 371 



Amphibians and reptiles from southern Peru 

 collected by the Peruvian Expedition of 

 1914-1915 under the auspices of Yale Uni- 

 versity and the National Geographic 



Society ^ 



Amphissa corrugata 2 



Angitia galleriae 266 



Anglesite, notes on *37 



Anguilla japonica 30^^ 



Anisodoris nobiUs 2 



Annelid, a new polychaetous, of the genus 



Nereis from Brazil ^^ 



Anuularella bertini 74 



yvmquense '^3 



Annularia ftmbriatulum 72 



illustris 73 



lachneri '3 



lincina 73 



mayensis 75 



pseudalatum 73 



ramsdeni 75 



yunquense 73 



Annulariidae, a classification of the American 



operculate land mollusks of the family 



Anoura geoffroyi 222 



Aniens viginiensis 179 



AnthophyUite, notes on 437 



Antocha saxicola ^^^ 



Apanteles, a revision of the North American 

 species of Ichneumon-flies belonging to 



the genus ^^ 



Apterencyrtus pulchricornis 18-^ 



Areshnasoma rivertonensis 395 



Arthrolytus kansensis 212 



Ascaris filicoUis ^80 



Assiminea subrotundata 1^3 



Astichomyiia latiscapus 



Atarba picticornis 



Ateles ater 220 



Atractus peruvianus ^17 



Barboiu', Thomas,and Q. K. Noble. Amphib- 

 ians and reptiles from Southern Peru col- 

 lectetd by the Peruvian Expedition of 1914- 

 1915 under the auspices of Yale University 



and the National Geographic Society 609 



Barleeia, West American mollusks of the Ris- 



soid genus ^^^ 



Barleeia alderi 163,175 



bentleyi 168.171 



califomica 



carpenteri 



coronadoensis 



dalH 



681 



49 



415 



173 

 . 175 

 . 175 

 168,171 



