SYNOPSIS OF GENERA. 
XXXIX 
Sub-genus CONOLICHAS, Dames. 1877. 
1859. Lidias, Hall. Pal. N. Y., vol. iii. 
1861. Lidias, Hall. Descr. New Species Fossils. 
1862. Lidias, Hall. Fifteenth Kept. N. Y. State Cah. Nat. Hist. 
1869. Lidias 9, Karstens. Beitr. zur Landesk. herzog’. Schleswig und Holstein. 
1874. Lidias, Steinhardt. In pi-eus. Gesch. gef. Triloh. 
1876. Acidaspis (Terataspis), Hall. Illustrations of Devonian Fossil.s. 
1877. Cmiolidias, Dames. Zeitsch. der deutsch. geol. Gesellsch. 
1885. Conolidias, Schmidt. Revision Ostbalt. Silur. Trilob. 
1885. Conolidias, Zittel. Handb. d. palaeontologie. 
Diagnosis. Glabella with only anterior and posterior 
lateral furrows. Lateral lobes well defined. Frontal 
lobe, and sometimes the lateral lobes, conically elevated, 
and often inclined backward. 
Sub-genus HOPLOLICHAS, Dames. 1877. 
1842. Asaplms, Conrad. Jour. Acad. Nat. Sci. Phila. 
1846. Lidias, Bbyrich. Untersuchungen iib. Ti-ilob. 
1858. Lidias, Dethleff and Boll. Trilobiten Mecklenburgs. 
1859. Lidias, Nieszkowski. Monogr. Trilob. Ostseeprov. 
1867. Metopias, Qdenstedt. Peti-efaktenkunde. 
1869. Lidias, Karstens. Beitr. zur Landesk. herzog. Schleswig und Holstein. 
1874. Lidias, Steinhardt. In preus. Geschieb. gef. Trilob. 
1877. Hoplolidias, Dames. Zeitsch. der deutsch. geol. Gesell. 
1885. Hoplolidias, Schmidt. Revision Ostbalt. Silur. Trilob. 
1885. Hoplolidias, Zittel. Handb. d. Palaeontologie. 
Diagnosis. The frontal lobe of the glabella 
longitudinally arched, evenly convex, tubercled, 
spiniferous or with a single strong baculate pro¬ 
cess. Lateral furrows as in Conolidias. Occipital 
ring bearing a simple or compound spine. 
