2O6 THE CHICAGO ACADEMY OF SCIENCES. 



1873. Illaenus springfieldensis. Meek, Pal. Ohio, vol. 1, p. 129'. 

 IHaenus transversalis Weller. 



1907. Illaenus transversalis. Weller, This Bulletin, p. 224, pi. 16^' 

 figs. 7-9. 



Niagaran: Bridgeport, 111. 

 Illaenus worthenanus W. & M., see Illaenus armatus Hall. 



LICHAS Dalm., 1826. 



Lichas boltoni Hall, see Arctinurus boltoni (Bigsby). 



Lichas boltoni var. occidentalis Hall, see Arctinurus occidentalis (Hall) 



Lichas breviceps Hall, see Metopolichas breviceps (Hall). 



Lichas breviceps ? Hall, see Dicranopeltis decipiens (W. & M.). 



Lichas byrnesanus M. & G., see Corydocephalus byrnesanus (M. & G.). 



Lichas decipiens W. & M., see Dicranopeltis decipiens (W. & M.). 



Lichas emarginatus Hall, see Dicranopeltis decipiens (W. & M.). 



Lichas hanoverensis M. & G.. see Corydocephalus phlyctainodes (Green). 



Lichas nereus Hall, see Arctinurus nereus (Hall) . 



Lichas obvius Hall, see Arctinurus obvius (Hall). 



Lichas ptyonurus H. & C., see Corydocephalus ptyonurus (H. & C.). 



Lichas pugnax W. & M., see Metopolichas pugnax (W. & M.). 



METOPOLICHAS Gurich, 1901. 



Metopolichas breviceps (Hall). 



1864. Lichas breviceps. Hall, Trans. Albany Inst., vol. 4, p. 222. 



Niagara: Waldron, Ind. 



1875. Lichas breviceps. H. & W., Pal. Ohio, vol. 2, p. 156, pi. 6, 

 fig. 17. 



Niagara: Yellow Springs, Ohio. 



1877. Lichas breviceps. Hall, 28th Rep. N. Y. St. Mus. Nat. Hist, 

 (doc. ed.), pi. 34, fig. 1-7. 



Niagara: Waldron, Ind. 



1879. Lichas breviceps. Hall, 28th Rep. N. Y. St. Mus. Nat. Hist. 

 (mus. ed.), p. 197, pi. 34, figs. 1-7. 



Niagara: Waldron, Ind. 



1882. Lichas breviceps. Hall, llth Rep. Dep. Geol. and Nat. Hist., 

 Indiana, p. 343, pi. 36, figs. 1-7. 

 . Niagara: Waldron, Ind. 

 185. Lichas breviceps. Foerste, Bull. Sci. Lab. Den. Univ., vol. 



1, p. 112, pi. 13, figs. 26a-d. 



Clinton: Near Dayton and at, New Carlisle, Ohio. 

 1887. Lichas breviceps. Foerste, Bull. Sci. Lab. Den. Univ., vol. 



2, p. 98, pi. 8, figs. 18-19. 

 Clinton: Near Dayton, Ohio. 



1895. Lichas breviceps. Foerste, Geol. Surv. Ohio, vol. 7, p. 529, 

 pi. 25, figs. 26a-e; pi. 27, figs. 18-19. 



Clinton: Ohio. 

 Metopolichas ferrisi Weller. 



1907. Metopolichas ferrisi. Weller, This Bulletin, p. 244, pi. 22., 

 figs. 12-13. 



Niagaran: Near Channahon, Will Co., 111. 



