248 Annals of the. Soutli African Mnsenin. 



different parts of the same specimen ; l)ut at the angles of the shell 

 they always seem to alternate. There is no trace of ornamentation 

 in the spaces between the ribs. The rate of tapering is about 1 in 3. 

 This species has been recorded by Ulrich ''■'■ from the Ida Slates of 

 Bolivia. 



Localities. — (Nos. 73, 74) Whupperthal, road-cutting north of Tra- 

 Tra River ; Cederberg (type). 



CONULARIA QUICHUA, Steinmann and Doderlein. 



(PI. XXX., figs. 10, 10a.) 



1890. Connlaria (Jiiichita, Steinmann-Doderlein, Elemente der 

 Palaont., p. 343, fig. 395, D, E. 



There is one impression of a portion of the exterior of a large 

 Connlaria (No. 72), measmdng about 75 mm. in length and tapering 

 about 1 in 4 or 5, which seems referable to the species C. quichita, 

 described in detail by Ulrich. f This species probably occurs in the 

 Devonian of Argentina :j: as well as of Bolivia. Our specimen 

 shows two faces, just as does Ulrich's figure 7a (ojj. cit.). The 

 surface of each face is traversed by gently arched, very fine closely- 

 placed ribs, 45-50 in the space of 10 mm. The ribs are furnished 

 with comparatively large round tubercles ; the spaces between the 

 ribs are apparently longitudinally striated, as may be detected in 

 the better preserved parts of the impression. There is a weak 

 shallow medial impressed line down the centre of each face, as 

 Ulrich's figure shows. 



Localiti/.—{No. 72) Gydo Pass, Ceres. 



CONULARIA cf. UNDULATA, Conrad. 



(PI. XXXI., figs. 1, la.) 



There is one imperfectly preserved specimen (No. 80) of a Conn- 

 laria which is probably comparable to Conrad's species C.undulata% 

 from the Hamilton Group, and is like that which has been 

 described from the Devonian of Bolivia by Ulrich. H The sculpture 

 consists of fine gently arched ribs ornamented by rather irregularly 



* Ulrich, op. cit., p. 2y, t. lii., tig. 4. 



t Ulrich, op. cit., p. :i4, t. iii., tig. la, h. 



I Kayser, op. cit., p. 288, t. xi., tigs. 1, 2. 



§ Hall, op. cit., p. 208, pi. xxxiii., tigs. 1-5; pi. xxxiv., tigs. 1-4. 



|] Ulrich, op. cit., p. '61, t. iii., tigs. 6rt, 6^. 



