ILLUSTRATIONS 



PLATES 



PLATE PAGE 



I. Carinella cafistrata^ C. dinema (= C sexlineata)^ 

 Amphiporus bimaculatus^ Cerebraticlus herculetis^ 



Tetrastemma bicolor 86 



II. Emplectonema biirgeri^ T(^niosotna princeps^ Zygone- 



mertes thalassina^ Paranemertes peregrina 88 



III. Amphiporus exilis (= A. formidabilis')^ Zygonemertes 



albida^ Paranetneries carnea^ P. peregrina^ Cari- 

 nella speciosa (= C. rubra) 90 



IV. Amphiporus nebulosus^ Micrura alaskensis^ Cerebrat- 



ulus albifro7is^ Amphiporus tigrinus 92 



V. Alicrura verrilli^ Cerebratulus longiceps, Lineus tor- 



quatus^ Amphiporus bimaculatus 94 



VI. Cerebratjdus montgomeryi^ C. occidentalism Am- 

 phiporus angulatus 96 



VII. Zygonemertes thalassina^ Amphiporus angulatus^ Pa- 

 ranemertes pallida, P. carnea, Amphiporus exilis 

 (^= A. formidabilis) f A. leuciodus (= ^. impari- 



spinosus') , Paranemertes peregrina 98 



VIII. P^mplectonefna biirgeri, E. gracile, Atnphiporus bi- 

 ?naculatuSm A. tigrinus^ A. ftebtelosus., Zygone?nertes 



albida, Paranemertes carnea lOO 



IX. Carinella speciosa (= C. rubra) 102 



X. Carinella speciosa (= C. rubra), Amphiporus tigrinus. 104 

 XL Afnphiporzis nebulosus, A. angulatus, A. exilis ( = A. 



formidabilis) 106 



XII. Paranejnertes pallida, Amphiporus bimaculat7is^ Em- 

 plectonema biirgeri 108 



XIII. Micrura alaskensis, Zygonemertes thalassina, Amphi- 



porzis angulatiis IIO 



XIV. Lineus rubescens, Carinella cingulata, Tetrastemma 



guadrilineatum, T. bilineatjun, T. ( Oerstedia) retic- 



ulatum, T. signifer 204 



XV. Nemertopsis gracilis, Paranemertes californica, Lin- 



(ix) 



