348 



BULLETIN" 11, UNITED STATES NATIONAL MUSEUM. 



Fig. 225.— Stictopoea scalpelu- 

 FOEMis. a, Eichwald's figure 



OF THE SUEFACE ENLARGED; 

 b AND C, ElCmVALD'S ORIGINAL 

 FIGURE OF THE SAME SPEQES. 



pora disticha. Eichwald's specimens were recorded from the inflam- 

 mable, argillaceous shale (Kuckers, C2), near Erras. I have not seen 

 this form and the identification is probably incorrect. 



Genus RHABDINOPORA Eiehwald, 



Khabdinopora Eichwald, Letlisea Rossica, vol. 1, 1860, p. 368. 

 This genus was described as belonging to the Bryozoa, an error 

 which is now well known since its genotype, 

 RJiabdinopora fidbelliformis is the widespread 

 form best known as DictyonemaJlabeTliformis. 

 In our list of foreign genera, Nickles and 

 myself^ included Rhabdinopora among the 

 Bryozoa with the comment "seems to be a 

 fenestellid with one row of cells to the branch; 

 this is a type unknown to us, unless it be a 

 case of defective observation. " The present 

 allusion to Rhabdinopora is to correct the 

 error of its reference to the Bryozoa. 



STICTOPORA SCALPELLIFORMIS (Eichwald). 



Text fig. 225. 

 Eschara scalpelliformis Eichwald, Urwelt Russlands, vol. 2, pi. 1, fig. 1; Letlisea 

 Rossica, vol. 1, 1860, p. 391, pi. 33, fig. 3a, 36. 

 The two type -specimens of this species as shown by the accom- 

 panying figures, are undoubtedly different. I have not encountered 

 any specimen which might be identified with either 

 one of the types. Without an actual restudy of these 

 types, the species can not be considered as valid. 



Occurrence. — "Calcaire a Orthoceratite, " Reval 

 and Erras. 



VINCULARIA MEGASTOMA Eichwald. 



Text fig. 226. 



Vincularia megastoma Eichwald, Lethssa Rossica, vol. 1, 

 1860, p. 402, pi. 24, fig. 9. 



This species is registered from several post-Ordo- 

 vician localities and from the middle Ordovician at 

 Wesenberg. If the figured type came from Wesen- 

 berg, and is correctly illustrated, the species is un- 

 doubtedly a Nematopora closely allied to N. granosa 

 Ulrich^ from the lowest Trenton beds at Cannon 

 Falls, Minnesota. The collections from the Wesenberg limestone have 

 afforded no specimens of this kind, and until the type locality of V. 

 megastoma is known, the species can not be identified with certainty. 



1 Synopsis of American Fossil Bryozoa, Bull. 173, U. S. Geol. Surv., 1900, p. 57. 



2 Joum. Cincinnati Soc. Nat. Hist., vol. 12, 1890, p. 196, fig. 20; Geol. and Nat. Hist. Surv. Minnesota, 

 vol. 3, pt. 1, 1893, p. 205, pi. 3, figs. 17-20. 



Fig. 226.— VlNCXJLAELi 

 MEGASTOMA. aAND&, 

 TYPE-SPECIMEN, Xl 



AND enlaeged; C, 



CEOSS-SECTION OF 



SAME. ( Aftee Eich- 

 wald.) 



