OF GENERA IN ZOOLOGY. 
265 
Pithecopus Cope. Proc. Acad. Nat. Sc. 
Philad., 1868, p. 112. 1868. Batr., 
Anura, Hyl. Cope. 
Pithocles Thomson. Syst. Ceramb., p. 
291. Nom. propr. 1864. Col. 
Pithonides Geyer. In Hiibn., Exot. 
Schmett., iii. 1826. Lep. 
Pithopliilus Heer. Col. Agassiz. 
Pitonillus Montfort. Conch. Syst., ii. 
1810. Moll. Agassiz. 
Pitonillus (Montfort) FIcrussac. Tabl. 
Syst., xxxiy. (=Pitonnillus.) 1821. 
Moll., Gast. 
Pitophilus Heer. Col. 
Pittacus Billberg. Enum. Ins., p. 96. 
1820. Neur. 
Pitthaea Desvoidy. 1863. Dipt., Muse., 
Tacli. Verrall. 
Pityobius Le Conte. Trans. Amer. Phil. 
Soc., x, p. 428. 1853. Col., Elaterid. 
Le Conte. 
Pityphilus Mulsant. Col. Franco, Lon- 
gic., ed. 2, p. 302. 1863. Col. 
Placenticeras Meek. Proc. Amer. Phil. 
Soc., xi, p. 429. (Type Ammonites 
placenta DeKay.) 1872. Moll.,Ceph. 
Dali , White, Dalton. 
Placentula Lamarck. Anim. sans Vert. 
(=Peneroplis Montf.) 1822. Moll. 
Agassiz. 
Plachiloma (Rafinesque ?) Ferussac. 
Bull. Zool., p. 23. (v. Pachyloma.) 
1835. Moll., Brach. 
Placiphorella Carpenter. Proc. U. S. 
Nat. Mus., i, p. 298. (Type P. velata 
Carp.) 1878. Moll., Polypi. Dali. 
Placocista Leidy. Rep. U. S. Geol. Surv. 
Terr., xii, p. 220. Plax, a plate ; kiste, 
a box. 1879. Protozoa, Rhizop. 
Placocoenia D’Orbigny. Note Pol. Foss. 
1849. Pol., Astraeid. Agassiz. 
Placomicrus. (y. Plaxomicrus Thomson. ) 
Col. 
Placomoceros Cuvier. Rkgne Anim. 
(=Placomopherus Leuck.) Moll, Ag- 
assiz. 
Placomopherus Leuckart. Ruppell, 
Reise nordl. Afrika. Atl. (= Doris.) 
1828. Moll. Agassiz. 
Placonycha Horn. Trans. Amer. Ent. 
Soc., vii. Proc., p. 22. 1879. Col., 
Dasc. 
Placopharynx Cope. Proc. Amer. Phil. 
Soc., 1877, p. 467. 1877. Pisces, 
Malac., Catost. Cope. 
Placophyllia D’Orbigny. Note Pol. 
Foss. 1849. Pol., Astraeid. Agassiz. 
Placoscelis Stal. Ofv. Vet. Akad. Forh., 
1867, p. 542. 1867. Hem. Water- 
house. 
Flacotrochus Edwards et Haime. Ann. 
Sc. Nat., [3], ix. nlai;, lamina j 
rpox'og, trochus. 1848. Moll., Turbin. 
Agassiz. 
Placunomia Swainson. Treat. Malac. , p. 
390. (=Placunanomia.) 1840. Moll., 
Biv. 
Placyna (Macquart) Bigot. (=Platyna 
Wiedemann, 1824.) 1856. Dipt., 
Strat. Verrall. 
Plagia Macquart. Syst. Beschr., vii, p. 
201. t xhayiog. 1838. Dipt., Tach. 
Bigot. 
Plagia Meigen. 1838. Dipt., Muse., 
Tach. Verrall. 
Plagiarca Conrad. Geol. Surv. N. Car., 
i, app. A, p. 4. (Type Barbatia caro- 
linensis Conrad. ) 1875. Moll., Aceph. 
Dali. 
Plagiocephala Macquart. Dipt. Exot., 
p. 213. 7T/1 ayioc, K£<pa?i,7/. 1843. Dipt., 
Diopsid.? {Bigot), Ortal.? Verrall. 
Plagiodera Redtenbacher. Fauna 
Austr., ed. 1, p. 553. 1849. Col. 
Waterhouse. 
Plagiographus Chevrolat. Col. Hefte. 
1869. Col. 
Plagiomastix Diesing. Syst. Helm., i, 
p. 41. 1850. Protoz. 
Plagionotus Agassiz. Compt. rend. , Ann. 
Sc. Nat., viii. 1847. Ech. 
Plagiopatagus Lutken MSS. Teste Ag- 
assiz, Mem. Mus. Comp. Zool., iii, p. 
139. (=Maretia.) Ech. 
Flagiopeltis Diesing. Syst. Helm.,i, p. 
416. 1850. Vermes. 
Plagiopisthen Thomson. Ann. Soc. Ent. 
France, 1856, p. 321. nlayiog, obli- 
quus; o'klo'&ev, postice. 1856. Col. 
Flagioptychus Matheron. Cat., p. 114. 
1842. Moll., Brach. 
Plagiostira Scudder. Rep. U. S. Chief 
Engin., 1876, iii, p. 501. nTiayiog) 
orelpa. 1876. Orth., Locust. Scudder. 
Plagiostoma Nilsson. Prodr. Ichth. 
Scand. nX ay Log, obliquus; aroga, os. 
1832. Pisces, Placoidei. Agassiz. 
Plagiotoma Loew. Monogr. Dipt. N. 
Amer.,pt. iii, p. 252. n hayiog] rogau. 
1873. Dipt., Tephritid. Bigot. 
