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. I composed of thirteen 



deeply sulcate segments. Pygidium smaller than the cephalon, elongate-trian- 

 gular, posteriorly rounded or slightly produced. The axis hears usually from 

 ten to fourteen annulations. Pleurae smooth, or with posteriorly sloping ribs. 



Family, Bronteid.2e. 

 Genus B R N T E U S , Goldfuss. L843. 



1821. Entomostracites, Wahlenberg. Nov. Art. Soc. Sci. Upsala. 



1S22. Asaphus, Brohgniart. Hist. Nat. Crust, f 



1823. Asaphus, Schlotheim. Nacht. ii, zur Pelrefakten. 



1S26. Asaphus (llksnus), Dalman. Lleber Palseaden. 



1881. Asaphus, Steiningeh M6ra. S i Franc 



1S32. Olenus, Goldfuss. Dechen's Handb. der Geognosie. 



1S3H Asaphus (Olenus), Murchison. Silurian System. 



1839. Asaphus, Emmrich. De Trilob. I'i 



1839. Brontes, Goldfuss. Nov. Act. Acad. N. C. 



lSlii. Brontes, Mi bnster. Beitr. iii. zur Petrefaktenkunde. 



1840. Brontes, Sedgwick and Murchison. Trans. Geological Society. 



1841. Goldius, De Koninck. Nouv. Mem. de l'Acad. roy. de Bruxelles. 



1841. Brontes, Phillips. Pal. Foss. Cornwall Devon and Somerset. 



1842. Brontes, D'Archiac and Db Verneuil. Trans. Geological Society. 

 1812. Brontes, Muenster. Beitr. V, zur Peti'efaktenkunde. 



1843. Brontes, F. A. Rcemer. Verstein. des Harzgeb. 

 1843. Br onteus (Brontes), Goldfuss. Neues Jahrb. fur Min. 

 lS-iy. Bronteus, Burmeister. Organiz. d. Trilob. 



1843. Brontes, Portlock. Geol. Rept. 1. londei'ry. 



1844. Brontes, Sedgwick and Murchison. MM. PalSoz. Gebilde im Nord. von Deutschl. und Belgien 



(Leonhardt). 



1S45. Bronteus, Emmrich. Neues Jahrb. fur Min. 



1S45. Bronteus, Murchison, De Verneuil and Keyserling. Russie et Oural. 



1845. Bronteus, Beyrich. Deb. bohm. Trilob. 

 18415. Bronteus, McCoy. Syn. Sil. Foss. Ireland. 



1846. Bronteus, Barrande. Not. prelim, sur le Syst. Sil. Boheme. 

 lS4u. Bronteus, Beyeich. Dntersuchungen iil>. Trilob. II. 



1846. Brcmteus, Logan. Rept. Geol. Surv. Canada. 



1S47. Bronteus, Corda. Prodrom. Moo. bohmischen Trilobiten. 



1850. Bronteus, McCoy. Ann. and Mag. Nat. Hist. 



1850. Bronteus, the Brothers Sandberger. Verst. d. Rhein. Sch. 



1S52. Bronteus, Hall. Pal. N. V., vol. ii. 



1852. Bronteus, Barrande. Syst. Sil. Boheme, vol. i. 



1852. Bronteus, F. A. Rcemer. Beitr. ii, zur Harzgeb. 



1855. Bront( us. P. A. Rcemer. Beitr. iii, zur Harzgeb. 



1857. Bronteus, Billings. Rept. Prog. Geol. Surv. Canada. 



1858. Bronteus, Giebel. Silur. Fauna Unterharz. 



