308 PROCEEDINGS OF THE ACADEMY OF [1889. 



Soleniscus hallanus (Geinitz). 



Macrochilus kalian um Geinitz, 1866. Carb. und Dyas in Nebraska, 

 p. 5; S. hallanus Miller, 1877. Cat. Am. Palse. Foss., p. 162. 

 Upper Coal Measures. 



Soleniscus 1 hebe ( Hall). 



Macrochilus hebe Hall, 1862. 15th Reg. Rept. N. Y. State 

 Cab., p. 48 ; M. hebe Hall, 1879. Pate. N. Y., vol. V, pt. ii, p. 32. 

 Hamilton ; With considerable doubt referred to the genus. 



Soleniscus humilis Keyes. 



Macrochilus humilis Keyes, 1888. Proc. Acad. Nat. Sci. Phila., p. 

 239. Soleniscus humilis Keyes, 1889. Am. Naturalist, vol. XXIII. 

 p. 423 ; Lower Coal Measures. 



Soleniscus kansasensis (Swallow). 



Macrochilus kansasense Swallow, 1858. Trans. St. Louis Acad. 

 Sci., vol. I, p. 201. S. kansasensis Keyes, 1889. Am. Naturalist, 

 vol.'xXIli., p. 423 ; Upper Coal Measures. 



Solenisc is klipparti (Meek). 



Macrochilus klipparti Meek, 1872. Proc. Acad. Nat. Sci. Phila., 

 p. 328. S. klipparti Keyes, 1889. Am. Naturalist, vol. XXIIL, 

 p. 423 ; Coal Measures. 



Soleniscus newberryi (Stevens). 



Loxonema newberryi Stevens, 1858. Am. Jour. Sci. (2), vol. 

 XXV, p. 259 ; Macrochilus newberryi Hall, 1858. Geol. Iowa, vol. 

 I, p. 719 ; M. newberryi Keyes, 1888. Proc. Acad. Nat. Sci. Phila., 

 p'. 240; Soleniscus planus White, 1881. Expl. and Sur. W. 100 

 Merid., Supp. to vol. Ill, p. xxix ; S. newberryi White, 1884, Geol. 

 Indiana, 13th Ann. Rept,, pt. ii, p. 153. Coal Measures. 



Soleniscus paludinaeformis (Hall). 



Macrochilus paludinceformis Hall, 1858. Geol. Iowa, vol. I, p. 

 719; S. paludinceformis White, 1884. Geol. Indiana, 13th Ann. 

 Rept,, p. ii, p. 154. Lower Coal Measures. 



Soleniscus typicus Meek and Worthen. 



S. typicus M. and W., 1860. Proc. Acad. Nat. Sci. Phila,, p. 

 467; S. typicus M. and W., 1866. Geol. Illinois, vol. II, p. 384. 

 Coal Measures. 



Synonyms and Spurious Species. 



Macrochilus altonense Worthen, 1889. Geol. Illinois, vol. VIII, 

 p. 143. St, Louis Limestone. Preoccupied by Worthen in 1873. 

 Too imperfect to deserve another name. 



Macrochilus curvilineatum De Verneuil. Not American. 



