98 BULLETIN 92. UNITED STATES NATIONAL MUSEUM. 



AVICULA Klein. Genotype: A. hirundo Klein. 



Avicula Klein, Ostrac., 1873. McCoy, Syn. Char. Foss., 1844, p. 82. Wood- 

 ward, Man. Mollusca, pt. 2, 1854, p. 260, pi. 16, fig. 18. McCoy, Brit. Pal. 

 Rocks and Foss., 1854, p. 257. Pictet, Traite de Pal., 2d ed., 3, 1855, p. 

 597. Zittel, Handb. Pal., 2, Munich, 1881, p. 32. Waagen, Mem. Geol. 

 Surv. India, Pal. Indica, 13th ser., 1, 188], p. 289. Barrande, Syst. Sil. 

 Centre Boheme, 6, 1881, p. 23. Miller, N. A. Gaol. Pal., 1889, p. 463 

 Jackson, Amer. Nat., 24, 1890, p. 1141. Koken, Die Leitfossilien, Leipzig, 

 1896, p. 187. 



AVICULA ALATA Nicholson. See Modiolopsis primigenia. 

 AVICULA AVIFORMIS Conrad. See Prolobella trentonensis. 

 AVICULA CARINATA Emmons. See Byssonychia carinata. 

 AVICULA COMMUNIS Hall. See Actinopteria communis. 

 AVICULA CORRUGATA James. See Pterinea corrugata. 

 AVICULA DANBYI McCoy. See Palaeopecten danbyi. 

 AVICULA DEMISSA Conrad. See Pterinea demissa. 

 AVICULA ELLIPTICA Hall. See Prolobella subelliptica. 

 AVICULA EMACERATA Conrad. See Pterinea emacerata. 



Avicula?? ferruginea Conrad. 



Avicula ferruginea Conrad, Proc. Acad. Nat. Sci. Philadelphia, 3, 1846, p. 23, 



pi. 1, fig. 28. 

 Silurian (iron ore) : Jersey Shore, Lycoming County, Pennsylvania. 



AVICULA HERMIONE Billings. See Prolobella? hermione. 

 AVICULA HONEYMANI Miller. See Pterinea honeymani. 

 AVICULA INSUETA Emmons. See Pterinea insueta. 



Avicula lamellosa Dawson. 



Avicula lamellosa Dawson, Canadian Nat., n. s., 9, 1880, p. 342. 

 Silurian: Pictou, Nova Scotia. 



AVICULA LEPTONOTA Hall. See Pterinea emacerata. 

 AVICULA LIM.EFORMIS Hall. See Limoptera limaeformis. 

 AVICULA OBSCURA Hall. See Pterinopecten? obscura. 

 AVICULA? ORBICULATA Hall. See Amphiccelia orbiculoides. 

 AVICULA RHOMBOIDEA Hall. See Leptodesma rhomboidea. 

 AVICULA RUGOSA Vanuxem. See Pterinea subrugosa. 

 AVICULA SECURIFORMIS Hall. See. Pterinea securiformis. 

 AVICULA SUBARCUATA Emmons. See Modiolopsis arcuata. 

 AVICULA SUBELLIPTICA Emmons. See Prolobella subelliptica. 

 AVICULA SUBPLA.NA Hall. See Leiopteria subplana. 

 AVICULA SUB RECTA Hall. See Pterinea subrecta. 



