286 PAL-SONTOLOGT. 



affinis, LinguleUa (?) spissa, and Cruziana similis. From certain beds be- 

 low those of Bell Island, and referable to the Lower Lingula Flags orMene- 

 vian group, the following new species are described — Obolella(?) miser, 

 IStraparollina remota,Hyolithes excellens, Agraulos socialis,A. strenuiis,A. 

 affitiis, Solenopleura GommuniSjAnapolenusvenustus,Paradoocides tenellus, 

 F. decorus^ and Iphidea hella. From the Huronian Rocks of St. John's, 

 Newfoundland, the following new species are described — Aspidella 

 Terranovica, Stenotheca pauper, and Scenella reticulata — ^the last two 

 being small patelliform Gasteropods, whilst the affinities of the first 

 are uncertain. A discussion of the characters of the genus Stricldandinia 

 next follows, with descriptions of S. Canadensis, S. Gaspensis, S. hrevis, 

 S. Davidsoni, S. JSalterii, and a new species, S. melissa. 



The next part is occupied with a discussion of the structure of the 

 Crinoidea, Cystoidea, and Blastoidea (already published in Amer. Joum. 

 1869, 1870, and in Ann. Nat. Hist. 1870, 1871). A few corrections 

 and additions are added. 



The concluding part contains descriptions of certain fossils from the 

 Upper Silurian rocks (Arisaig series) of Nova Scotia. The following 

 species are described as new — Orthonota venusta, 0. incerta, 0. (?) spe- 

 ciosa, 0. simulans, Modiolopsis exilis, M. ruda, Goniophora transiens, G. 

 consimilis, G. hellula, G. mediocris, Cytherodon (?)placidus, C. (?)socialis, 

 Grammysia remota, G. rustica, G. Acadica, Pteritonella venusta, P. 

 ohlonga, and P. curta. The genus Pteritonella is proposed for forms 

 like Pterinea retrqflexa, in which there are several small anterior teeth 

 in front of the beaks, with several more or less elongated posterior 

 teeth, and a strong anterior muscular impression. H. A. N. 



BiLLiNas, E. On some new or little-known Fossils from the 

 Silurian and Devonian Bocks of Ontario. Canad. Nat. n. ser. 

 vol. vii. pp. 230-240, figs. 1, 2. 

 Describes a new genus of Sponges, allied to Aidocopium, from the 

 Niagara formation of Hamilton, Ontario, named Aulocopina ; and the 

 only species is termed A. Granti. Two new species of Amplexus {A. 

 exilis and A. mirahilis) and six new species of Zaphrentis (Z. invenusta, 

 Z. Eriphyle, Z. JTecuha, Z. Egeria, Z. genitiva, and Z. subrecta) are de- 

 scribed, all from the Corniferous Limestone. The new genus Hetero- 

 phrentis is founded to include certain forms (such as Z.spatiosa and Z.pro- 

 lijica) previously referred to Zaphrentis, but diifering in having usually a 

 pseudo-columella, and in apparently possessing but a single tabula, 

 which forms the floor of the calice ; four species are described (H. spa- 

 tiosa, H. excellens, H. compta, and H. prolifica). Finally, the author 

 describes two new Cephalopods (Gyroceras Numa and Orthoceras Anax) 

 and a new Trilobite (Lichas superhus), from the Corniferous Lime- 

 stone. H. A. N. 



On Mr. Meek's Note, p. 373 of this volume. Amer. Journ. 



ser. 3, vol. vii. p. 530. 

 Relates to the curious openings in the arms of Actinocriims, and to 



