173 



Helix rubiginosa. T. orbicularis, depressa, ferrugineo-cornea, 

 fusco tessellata, oblique costato-striata, late umbilicata; spira anfr. 

 6 arete volutis ; sutura impressa : apertura subrecta, lunata ; 

 labro simplici ; lamella unica secundum anfractum penultimum 

 volvente. Lat. -Ju, alt. ■:^\ poll. Hah. Kauai, Sandwich Islands. 



Larger than the other checkered shells of this group ; like H. 

 striatella^ Anthony, in form, size and sculpture, or like H. radi- 

 ata. Mull., as to coloring. ■ 



Helix DiEDALEA. Testa parva, discoidea, rubro-castanea, 

 fusco tessellata, costellis radiantibus acutis confertis scabra, sub- 

 tus acetabuliformis : spira anfr. ad 6 arete volutis, duplo altiori- 

 bus quam latis, ad peripheriam rotundatis, infra baud planulatis : 

 sutura impressa : apertura angusta, verticalis, lunata ; fauee 

 lamellis 9 volventibus instrueta, quorum 4 ad anfractum penulti- 

 mum, uno ad columellam, 2 ad basim, 3 ad labium dispositis. 

 Alt. ^V? ^at. yV po^l- Hah. Matea Islands. 



Size and color of H. contorla^ Fer. ; but the whorls are more 

 numerous and compact, and there are twice as many lamellae on 

 the penult w^horl. The umbilicus is similar in form to that of the 

 young H. hursatella, only the whorls remain rounded instead of 

 being flattened. 



ADDITIONS TO THE LIBRARY. 



Gray, G. R. Genera of Birds. 4to, No. 28. By purchase. 



Audubon and Bachman. Quadrupeds of North America. 

 Folio, plates, 86 to 90. From Suhscribers. 



Geological Report on the Mineral Lands of the United States. 

 8vo. Printed by order of Congress. From Hon. R. C. Win- 

 throp. 



Proceedings of the Academy of Natural Sciences of Philadel- 

 phia. No. 2 and 3, Vol. III. From the Society. 



American Quarterly Journal of Agriculture and Science, ed- 

 ited by Prof. Emmons. No. IL From the Editors. 



Remarks on fossil footmarks and icemarks, in the sandstone 

 of Middletown, Conn. By Joseph Barratt, M. D. (Newspaper 

 sheet.) From the Author. 



Annales des Sciences Physiques et Naturelles d'Agriculture 

 et d'lndustrie, publiees par la Societe Royale d'Agriculture, 

 d'Histoire Naturelle, et Arts Utiles de Lyons. 8 vols, royal 8vo. 

 1838 to 1845. 



