ILLUSTRATIONS 



PLATES 



PLATE PAGE 



I. Carinella capistrata^ C. dincfjia (= C sexlineata)^ 

 Amphiporus btmacii/aius^ Cerebratulus herctdeus, 



Tetrastemnia bicolor 86 



II. Emplectonema biirgeri^ Tcemosoma princeps^ Zygone- 



7nertes thalassina^ Paranemertcs peregrina 88 



III. Amphiporus exilis (= A. formidabilis")^ Zygonetnertes 



albida^ Paranemertes carnea^ P. peregrina,, Cari- 

 nella speciosa (^= C. rubra^ 90 



IV. Amphiporus nebulosus^ Micrura alaskensis^ Cerebrat- 



ulus albifrons^ Amphiporus tigrimis 92 



V. ^licrura verrilli^ Cerebratulus lo?igiceps, Lineus tor- 



quatus., Afnphiporus bitnaculatus 94 



VI. Cerebratuhis montgomeryi^ C. occidentalism Am- 

 phiporus angulatus 96 



VII. Zygonemertcs thalassi?ia, Amphiporus angulatus^ Pa- 

 ranemertes pallida^ P. carnea^ A?nphiporus exilis 

 (^= A. J'ormidabilis)^ A. leuciodus {= A. impari- 



spinosus^ , Paranemertes peregrina 98 



VIII. Etnplectonema bitrgeri^ E. gracile^ Amphipo^'us bi- 

 maculatus^ A. tigrinus^ A. nebulosus, Zygonemertes 



albida^ Paranemertes carnea lOO 



IX. Carinella speciosa (^= C. rubra) 102 



X. Caritzella speciosa (= C. rubra')^ Amphiporus tigrinus. 104 

 XI. Amphiporus nebulosus^ A. angulatus ^ A. exilis ( = yl. 



formidabilis) 1 06 



XII. Paranemertes pallida^ Amphiporus bimaculatus^ Em- 



plectofie?na bilrgeri 108 



XIII. Micrura alaskensis^ Zygonemertes thalassina^ Amphi- 



porus atJgulatus no 



XIV. Lineus rubescens^ Carinella cingulata, Tetrastemtna 



quadrilineatum^T. bilineatum, T. {Oerstedia) retic- 



ulatum^ T. signifer 204 



XV. Nemertopsis gracilis^ Paranemertes calif ornica^ Lin- 



(ix) 



