The Austral Ehynchonellacea. 173' 



Appears to show some interesting annectant char- 

 acters of the tubular-spined Miocene forms found in Aus- 

 tralian deposits. 



Recent. — Dredged, Sagami Bay, Japan, in about 160 

 fathoms. 

 gerlacheiy Rhynchonella, Joubin. 



Joubin, 1901, p. 7, pi. I., figs. 5-9; pi. II., fig. 10. 



A suboval form with smooth shell, but for faint 

 growth-lines. The beak is erect and deltidial plates are 

 very narrow. It belongs to the Rhynchonella Mpartita 

 group. 



Recent. — Antarctic Seas. 

 imhricata, Hemithyris, Buckman. 



Buckman, 1910, p. 11, pi. I., fig. 12. 



Apparently nearly related to some well preserved 

 rhynchonellids from Table Cape, Tasmania, which we have 

 named Tegulorhynchia coelospina. 



Miocene. — Glauconitic Bank, Cockburn Island, Graham 

 Land. 

 nigricans, Terebratula, Sowerby. 



Sowerby, 1846, p. 342, pi. LXXI., figs. 81, 82. 



(Rhynchonella). ^uess, 1864, p. 60, pi. XIV., figs, ia-d (expl. of 

 plate 5a-d in error). 



This living and fossils species is a modification of the 

 squamosa type, in which the shell is more terebratelloid in 

 form and the ornament less distinctly tegulate. 



Miocene. — Oamaruian and Awamoan, New Zealand 

 (Hutton). 



Recent. — Coast of New Zealand, in 19 fathoms. 

 nigricans, var. pyxidata, Rhynchonella, Davidson, 



Davidson, 1880, p. 59, pi. IV., fig. 14. Id., 1889, p. 171. 



This form has been compared by Davidson (op. cit. 

 1880, p. 60), with McCoy's R coelata, but which we con- 

 sider distinct. 



Recent. — Dredged south of Kerguelen Island, at 150 

 fathoms, rocky sea-bottom. 

 patagonica, Rhynchonella, Ihering. 



Ihering, 1903, p. 334, pi. III., figs. 11a, 6. 



Figures given by Ihering are not very clear, especially 

 as regards ornament, but that difficulty is removed by 

 Ortmann's figure of R. squamosa^ which is accepted by 

 Ihering as identical with R. patagonica. In the descrip- 

 tion of R. patagonica by Ihering it is pointed out that 

 the species differs from R. squamosa^ Hutton (non Ort- 

 mann) in having a larger number of costal rays. We 

 also note that Ortmann's specimen shows about 12 costae 

 on the sinus, and Ihering mentions 15. 



Miocene. — Lake Pueyrredon (Ortmann). Rio Seco' 

 and San Julian. (Ihering). Patagonia. 



