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, 1881, 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 avipormis 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 Palseopecten danbyi. 



Avicula demissa Conrad. See Pterinea demissa. 



Avicula elliptica Hall. See Prolobella subelliptica. 



Avicula emacerata Conrad. See Pterinea emacerata. 



Avicula?? ferruglnea Conrad. 



Avicula ferruginea Conrad, Proc. Acad. Nat. Sci. Philadelphia, 3, J846, p. 23, 



pi. 1, fig. 28. 

 Silurian (iron ore): Jersey Shore, Lycoming <'ounty, 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^formis Hall. See Limoptera limseformis. 



Avicula obscura Hall. See Pterinopecten? obscura. 



Avicula? orbiculata Hall. See Amphicoelia orbiculoides. 



Avicula rhomboidea Hall. See Leptodesma rhomboidea. 



Avicula rugcsa Vanuxem. See Pterinea subrugosa. 



Avicula securiformis Hall. See Pterinea securiformis. 



Avicula subarcuata Emmons. See Modiolopsis arcuata. 



Avicula subelliptica Emmons. See Prolobella subelliptica. 



Avicula subplivna Hall. See Leiopteria subplana. 



Avicula subrecta Hall. See Pterinea subrecta. 



