CONTENTS. 



XVII 



Order II. Cymothoidea or Flabellifera — Continued. Page. 

 Family XI. Spli.'oromidpp — Continued. 



Genus 48. Splueronia 280 



Spli;eromu quadridentatuni 281 



destructor : 282 



pentodon 286 



Genus 49. Exosphteronia 287 



Exosphseroma amplicauda •. 288 



rhomburuin 290 



yucatanum 291 



faxoni 292 



octoncuni 298 



thermophiluni 294 



dugesi 295 



oregonensis 296 



crenulatuni 298 



Genus 50. Dyuaraene 299 



Dy namene perforata 299 



glabra 801 



angulata 802 



niocjrei 808 



dilatata 804 



))enedicti 304 



Genus 51. Paradynamene 805 



Parady namene benjamensis 805 



Genus 52. Cilica;a 807 



Cilicjea linguicauda 809 



granulosa 809 



cordata 810 



gilliana 313 



caudata 314 



sculpta 818 



carinata 819 



Family XII. Serolidse 820 



Genus 53. Serolis 820 



Serolis carinata 821 



Order III. Idotheoidea or Valvifera 828 



Family XIII. Arcturidae 823 



Genus 54. Astacilla 828 



Astacilla granulata 324 



cpeca 826 



Genus 55. Arcturus 827 



Arcturus beringanus 828 



longispinus 829 



glaber 380 



purpureus 381 



caribbfpus 385 



floridanus . 336 



baffini 337 



baffini var. tuberosus 340 



Genus 56. Pleuroprion 342 



Pleuroprion murdoch i 842 



intermedium > 844 



