CiTHERUBi, O. 0. Sars — 



nig^rescens {JBaird) 



similis. ff- 0. Sars 



pumila, n. sp 



coticentrica, n. sp 



complaDiita, ». sp — 



undnta, S. 0. Sars 



conipressa. n. sp. ... 



striata, G. 0. 'Sars 



quadratn, Norman .. 



cuneatn, Brady 



SttTsii, Brady .. 



angulnta, Brady 



producta, Brady , .. 



comntn, Brady ... 



Bobertsoni, Brady 



gibba (Milhr) 



flavcfcens, Brady 



acnticostota, Q. O. Sars .. 



cellulosa (Norman) 



clathrnta, G. 0. Sars .... 



CnHEHOPTEBOK, G. 0. Sars — 

 latissimum {Norman) 



nodosum, Brady .. 



nrcuatum, n. sp 



inflatura, n. sp 



Montrosieuse, n. sp 



rectnin, Brady 



angnlatiim, 5. i^- S. 



KTTnocYTHBBB, G, 0. Sars— 



simplex {Norman) 



coiifitricta, Q. O. Sars 



.elongata, n. sp 



PriEUTOCTXaEHK, 6. 0. Stos — 

 caudata, G. 0. Sars 



CYTHERiDBig, Jones — 



sobBpiralis, n. sp 



SCIBBOCRILUS, O. 0. Sars— 

 contortas, Norman 



PAEAD0S0ST03IA, Fischer — 



yuriahWe (Baird) 



abbreviatiim, G. O. Sars .... 



pyriforme, n.sp 



ensiforniP, Brady 



Fischeri, O. 0. Sars .......... 



flexnosum, Brady 



teneniin, n, sp 



arcQatnni, Brady 



ASTEEOPE, PhiUppi— 

 teres {Norman) 



PoiYCOPE, Q. 0. Sart— 



orbicularis, G. 0. Sars 



BoBftUBTiA, gen. nov. — 

 robnstn, n. sp 



