NicKLES AND BASSLER.] CATALOGUE OF GENERA AND SPECIES. 231 



DIANULITES Eiohwald— Continuod. 



(Jh^. This genus as defined by Eichwald is wholly unintelligible and was, 

 until 1877 when Dybowski resurrected and redefined it, not recognized 

 by paleontologists. Dybowski has not helped the matter by his effort, 

 for his arrangement of the species is quite arbitrary, no two forms per- 

 haps being strictly congeneric. 



Diastoporolla Vine. See Berenicea Lamouroux. 



LIASTOPORINA Ulrich. Genotype: Diastoporina flabellata Ulrioh. 

 1890. Diastoporina. Ulrich, Jour. Cincinnati Soc. Nat. Hist., XII, p. 177. 



1892. Diastoporina. Miller, North American Geol. Pal., First Appendix, p. 684. 



1893. Diastoporina. Ulrich, Geol. Minnesota, III, p. 121. 



1897. Diastoporina. Simpson, Fourteenth Ann. Rep. State Geologist New York 



for the year 1894, p. 595. 



Diastoporina flabellata Ulrich, 



1890. Diastoporina flabellata. Ulrich, Jour. Cincinnati Soc. Nat. Hist., XII, 

 p. 178, fig. 5. 



1898. Diastoporina flabellata. Ulrich, Geol. Minnesota, III, p. 122, pi. ii, 2, 3. 

 1897. Diastoporina flabellata. Simpson, Fourteenth Ann. Rep. State Geologist 



New York for the year 1894, figs. 199, 200 (p. 595). 

 Trenton: Cannon Falls and St. Paul, Minnesota. 



DICHOTRYPA Ulrich. Genotype: Dichotrypa foliata Ulrich. 



• 1890. Dichotrypa. Ulrich, Geol. Surv. Illinois, VIII, pp. 386, 498. 



1889. Dichotrypa. (Ulrich, in press) Miller, North American Geol. Pal., p.300. 



Dichotrypa elegans Ulrich. 



1890. Dichotrypa elegans. Ulrich, Geol. Surv. Illinois, VIII, p. 500, pi. Ixxvi, 



8-8d. 

 St. Louis: Elizabethtown, Kentucky; Jersey and Monroe counties, Illinois. 

 Obs. See Dichotrypa grandis Ulrich for a probable synonym. 



Dichotrypa expatiata Ulrich. 



1890. Dichotrypa expatiata. Ulrich, Geol. Surv. Illinois, VIII, p. 501. 

 St. Louis: Alton, Illinois. 



Dichotrypa flabellum (Rominger). 



1866. Fistulipora flabellum. Rominger, Proc. Acad. Nat. Sci. Philadelphia, 



p. 122. 

 1890. Dichotrypa flabellum. Ulrich, Geol. Surv. Illinois, VIII, p. 501, pi. 

 Ixxvii, 1-lb. 

 Warsaw: Spergen Hill, Indiana. 



St. Louis: Elizabethtown and Eddyville, Kentucky; Clarksville, Ten- 

 nessee. 



Dichotrypa foliata Ulrich. 



1890. Diciiotrypa foliata. Ulrich, Geol. Surv. Illinois, VIII, p. 499, pi. xlii, 2-2r/. 

 Hamilton: Buffalo, Iowa. 



Dichotrypa grandis Ulrich. 



1890. Dichotrypa grandis. Ulrich, Geol. Surv. Illinois, VIII, p. 498, pi. xlii, \-le. 

 Niagara (?) : Will County, near Wilmington, Illinois (?). 

 Obs. This form is probably from the St. Louis group of Illinois ami may 

 be the same as Dichotrypa elegans Ulrich. 



Dichotrypa intermedia Ulrich. 



1890. Dichotrypa intermedia. Ulrich, Geol. Surv. Illinois, VIII, p. 500, pi. 

 Ixxvi, 9-9c. 



