OF GENERA 
Isocrinus Phillips. Ech., Crin. 
Isodactylus Gray. Cat. Lizards Brit. 
Mus., p. 259. 1845. Rept. Water- 
house. 
Isodema Felder. Wien. ent. Monatschr., 
vii, p. 109, note. 1863. Lep. 
Isodera White. Col. 
Isodora (Ehrenberg) Roth. Moll. 
( = Pliysa.) 1839. Moll. Agassiz. 
Isognostoma Hartmann. Syst. Uebers. 
(=Isognomostoma.) 1840. Moll., 
Gast. 
Isolaema Cope. Rep. U. S. Geol. Surv. 
Terr., ii. 1875. Pisces. Dalton. 
Isomira Mulsant. Col. France, Pectin. 
1856. Col. 
Isomita Diesing. Syst. Helm., i, p. 33. 
1850. Protozoa. 
Isomyia Walker. Journ. Proc. Linn. 
Soc. Lond., — , p. 46. lgoq ; pvta. 1859. 
Dipt., Muse. Bigot, Venall. 
Isonema Meek and Worthen. Proc. 
Acad. Nat. Sc. Philad. Isos; nema. 
1866. Moll., Gast. 
Isoperia Rafinesque. Moll. 
Isophya Brunner. Monogr. Plianeropt., 
p. 59, icsog ; (pvu. 1878. Orth., Loc. 
Isophyllia Edwards et Haime. Pol. 
Palaeoz., Arch. Mus., v. 1851. As- 
traeidae. Agassiz. 
Isopleura Meek. Smiths. Inst. Check 
List Invert. Foss., p. 36. (Type Ri- 
mella curvilirata Conrad, Journ. 
Acad. Nat. Sc. Philad., n. s., iii, p. 
331.) 1864. Moll., Gast. Dali. 
Isopora Studer. Monatsb. preuss. Akad. 
Wiss. Berlin, 1878, p. 535. hoog. 
(Subg.) 1878. Coel., Pol. Pourtales, 
LiUJcen. 
Isopsera Brunner. Monogr. Phaneropt., 
p. 218. laoipgpog. 1878. Orth., Loc. 
Isora Mulsant. Spec. Col. Trim. S6cur., 
p. 69. Nom. mythol. 1851. Col. 
Isorapkinia Zittel. Neues Jahrb. Mi- 
ner., 1878, p. 597; Abh. Akad. Wiss. 
Miinchen, xiii, i, p. 133. loog ; pcupig. 
1878. Spongia. 
Isorhynchus King. Perm. Foss., p. 112. 
1850. Brach., Porambon. 
Isorrhinus . (v. Isorhinus Capio- 
mont. ) Col. 
Isorrhynchus . (v. Isorhynchus 
Schonherr. ) Col. 
Isosillago MacLeay. Proc. Linn. Soc. 
N. S. Wales, iii, p. 34. 1878. Pisces. 
IN ZOOLOGY. 175 
Isosoma Billberg. Enurn. Ins., p. 56* 
1820. Col. 
Isospondyli Cope. Proc. Amer. Phil. 
Soc., 1870, p. 452. 1870. Pisces, Phy- 
sost. Cope. 
Isotaenia Cope. Bull. U. S. Geol. Surv. 
Terr., 1875, p. 293. 1875. Pisces, 
Holoc. Cope. 
Isoteles Edwards. Crust., iii, p. 300. 
(Pro Isotelus Dekay.) 1840. Crust., 
Tril. 
Isotima Brunner. Monogr. Phaneropt., 
p. 112. loog ; ripi]. 1878. Orth., Loc. 
Isotomus Mulsant. Col. France, Long., 
ed. 2, p. 143. 1863. Col. 
Issiodoromys Croizet. Compt. rend., 
1840, p. 927. 1840. Mamm, 
Isthmia Gray. Lond. Med. Repos: 1821. 
Moll. Agassiz. 
Isticus Munster. Jahrb. Miner., 1834, 
p. 539. (Err. typ. pro Istieus.) 1834. 
Pisces, Teleost. 
Istocheta Rondani. (=Histochaeta 
Rondani.) 1859. Dipt., Muse., Tach. 
Verrall. 
Ita Tournier. Compt. rend. Soc. Ent. 
Belg., ii, xlviii, p. 10; Ann. Soc. 
Ent. Belg., xxi, p. 18. 1878. Col., 
Tanyrh. 
Itaira Vaillant et Bocourt. Miss. Sc. 
M&xique, — , p. 701. Yox barb. 1877. 
Pisces, Teleost. Jordan. 
Itanus Felder. Neues Lep., p. 34. 1861. 
Lep. 
Iteaphila Zetterstedt. Insecta Lappo- 
nica, p. 541. nvg ; tyiksiv. 1840. 
Dipt., Hybat. Bigot. 
Ithocritus Lacordaire. Gen. Col., ix, 
ii, p. 448. Etym. dub. 1872. Col. 
Ithomeis Bates. Trans. Linn. , Soc. 
Lond., xxiii, p. 541. 1862. Lep. 
Ithygrammodon Osborne, Scott, and 
Speir. Contr. Mus. Geol. Princeton 
Coll., no. 1, p. 56. 1878. Mamm., 
Artiod. Dalton. 
Ithyphenes Murray. Trans. Linn. Soc. 
Lond., xxiv, p. 316. I'&vg, pronus; 
< pevo ), caedo. (v. Ithyphenus.) 1864. 
Col. 
Ituna Doubleday. Gen. Diurn. Lep., 
pi. 17. 1847. Lep. 
Ityocara Thomson. Scand. Col., ix, p. 
239. (Incorrect in spelling and refer- 
ence in Marschall. ) 1867. Col. Water- 
house. 
