EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 



67 



CORYNOTRYPA SCHUCHERTI Bassler. 



Plate 6, fig. 1; text fig. 13. 



Corynotrypa schucherti Bassler, Proc. U. S. Nat. Mus., vol. 39, 1911, p. 525, 

 text fig. 26. 



Zoarium brandling frequently, uniserial, incrusting, in the case of 

 the type-specimen, an example of Streptelasma. Zocecium com- 

 paratively large, averaging 1 mm. in length, irregularly club-shaped, 

 the anterior half swollen, with a maximum diameter of 0.40 mm., 

 tapering gradually in the posterior half to the narrowest part with a 

 width of 0.15 mm., where it joins the distal end of the preceding one. 



Fig. 13.— Coeynotetpa schucherti. a and b, portions of the type-specimen, incrusting a Steep- 



TELASMA, X9; C, SEVERAL ZOCECIA OP THE SAME, X20. WeSENBERG LIMESTONE (E), WeSENBEEG, 

 ESTHONIA. 



Apertures subterminal, surrounded by a slight border, and with a 

 diameter slightly more than one-third that of the zooecium. 



This species, which is named in honor of Prof. Charles Schuchert, 

 who collected the type-specimen, is related most closely to the com- 

 mon American form C. injiata, but differs conspicuously, however, 

 in having larger, less regular, more elongate and less rapidly expand- 

 ing zooecia. In general, C. schucherti is intermediate in its character 

 between C. injiata and C. dissimilis. 



Occurrence. — Kare in the Wesenberg limestone (E) at Wesenberg, 

 Esthonia. 



Hohtype.— Cat. No. 57111, U.S.N.M. 



British Museum collections, one specimen. 



