SYNOPSIS OF GENERA. 
XXV 
suture, thence they continue to the edge of the doublure, where they meet, thus 
inclosing a small, free, sub-triangular plate. Thorax composed of thirteen 
deeply sulcate segments. Pygidium smaller than the cephalon, elongate-trian¬ 
gular, posteriorly rounded or slightly produced. The axis bears usually from 
ten to fourteen annulations. Pleurae smooth, or with posteriorly sloping ribs. 
Family, BRONTf]iD.E. 
Genus B 11 0 N T E U S , Goldfuss. 1843. 
1821. Eiitomostmcites, Wahlexbbrg. Nov. Act. Soc. Sci. Upsala. 
1822. Asajilms, Brongniart. Hist. Nat. Crust, foss. 
1823. Asaplius, Sciilotheim. Nacht. ii, zur Petrefakten. 
1826. Asaplms {lllwnns), Dalman. Uebei- Palaeaden. 
1831. Asa 2 )hus, Steininger. M6ra. Soc. geol. de Fi'ance. 
1832. Olenus, Goldfuss. Declien’s Handb. der Geogriosie. 
1839. Asaplius (OlenuB), Murchison. Silurian System. 
1839. Asapilius, Emmrich. De Trilob. Dissert. 
1839. Brontes, Goldfuss. Nov. Act. Acad. N. C. 
1840. Brontes, Muenster. Beitr. iii, zur Petrefaktenkunde. 
1840. Brontes, Sedgwick and Murchison. Trans. Geological Society. 
1841. Goldins, De Koninck. Nouv. M6ni. de I’Acad. roy. de Bruxelles. 
1841. Bro?ites, Phillips. Pal. Foss. Cornwall Devon and Somerset. 
1842. Brontes, D’Archiac and De Verneuil. Trans. Geological Society. 
1842. Brontes, Muenster. Beitr. V, zur Petrefaktenkunde. 
1843. Brontes, F. A. RtEJiER. Verstein. des Harzgeb. 
1843. Bronteus {Brontes), Goldfuss. Neues Jahi-b. fiir Min. 
1843. Bronteus, Burmeister. Organiz. d. Trilob. 
1843. Brontes, Portlock. Geol. Rejit. Londondei'ry. 
1844. Brontes, Sedgwick and Murchison. H51t. Palaoz. Gebilde im Nord. von Deutschl. und Belgien 
(Leonhardt). 
1845. Bronteus, E.mmrich. Neues Jahrb. fiir Min. 
1845. Bronteus, Murchison, De Verneuil and Kbyserling. Russie et Oui-al. 
1845. Brontenis, Bbyrich. Ueb. bohm. Trilob. 
1846. Bronteus, McCoy. Syn. Sil. Foss. Ireland. 
1846. Bronteus, Barrande. Not. jn dlim. sur le Syst. Sil. Boheme. 
1846. Bronteus, Beyrich. Untersuchungen iib. Trilob. II. 
1846. Bronteus, Logan. Rept. Geol. Surv. Canada. 
1847. Bronteus, Corda. Prodrom Mon. bohmischen Trilobiten. 
1850. Bronteus, McCoy. Ann. and Mag. Nat. Hist. 
1850. Bnniteus, the Brothers Sandbbrger. Verst, d. Rhein. Sch. Syst. 
1852. Bronteus, Hall. Pal. N. Y., vol. ii. 
1852. Bronteus, Barrande. Syst. Sil. BohSnie, vol. i. 
1852. Bronteus, F. A. Riemer. Beitr. ii, zur Harzgeb. 
1855. Bronteus, F. A. Rcemer. Beitr. iii, zur Harzgeb. 
1857. Brontetis, Billings. Rept. Prog. Geol. Surv. Canada. 
1858. Bronteus, Giebel. Silur. Fauna Unterharz. 
