130 



Transactions. 



Discorbina patelliformis Brady. 



— — • pileolus d'Orbigny. 



• — — • vilardeboana d'Orbigny. 



• pileolus (plastogamic form). 



Truncatulina praecincta Karrer. 

 — — ■ tenuimargo Brady. 



lobatula Walker and Jacob. 



■ ■ variabilis d'Orbigny. 



Anomalina coronata Parker and 



Jones. 

 Pidvinidina schreibersii d'Orbigny. 

 — — ■ elegans d'Orbigny. 



micheliniana d'Orbigny. 



auricula Fichtel and Moll. 



Pulvinulina crassa d'Orbigny. 

 Rotalia beccarii Linne. 



clathrata Brady. 



• • soldanii d'Orbigny. 



Polytrema miniaceum Linne. 

 Nonionina boueana d'Orbigny. 

 — — ■ turgida Williamson. 



■ scapha Fitcliel and Moll. 



■ — ■ — ■ depressida Walker and Jacob. 



umbilicatula Montagu. 



Polystoniella subnodosa Miinster. 



striato-punctata Fichtel and 



Moll. 



macella Ficbtel and Moll. 



In addition to the foregoing recorded species, tliere are many inter- 

 mediate forms, especially amongst the Nodosaria, Cristellaria, and Lagena, 

 most, if not all, of which may be referred to one or other of the recorded 

 forms upon fuller examination than they have been able to receive at 

 present. 



Aet. XIII. — Terminology for Foraminal Development in Terebratuloids 



(Brachiopoda). 



By S. S. BucKMAN, F.G.S. 

 Communicated by Dr. J. Allan Thomson. 



The excellent work which is being done by Dr. J. AUan Thomson among 

 the Brachiopoda of New Zealand, and his thorough grasp of modern prin- 

 ciples of palaeontology, are abimdantly proved in the pamphlets which 

 he has recently published. They are very welcome ; they make a genuine 

 and satisfactory advance in knowledge. 



There is, however, a slight ambiguity in a certain phrase used by the 

 author, due to a lack of technical terms ; and as I have already proposed 

 the necessary terms, which have been in type now for about a year, in a 

 publication on Brachiopods to be issued by the Geological Survey of India, 

 it seems desirable to mention them, so that they can be utilized, because, 

 for various reasons, it may yet be some time before my larger treatise can 

 be published, and it seems advisable to avoid the possible complexity 

 of two sets of terms for the same features. 



In his paper " Brachiopod Genera " Dr. Thomson says, " All the known 

 species of Bouchardia . . . possess similar and rather unusual beak 

 characters . . . there are sharp beak-ridges uniting in front of the 

 foramen, which is thus behind the apex."* Here is the ambiguity referred 

 to, contained in the words " in front " and " behind " ; and perhaps I 

 notice it the more readily because I have myself admittedly stumbled in 

 similar manner on more than one occasion. Now, the ambiguity is this : 

 The above words, "in front" and '" behind," are exactly contrary to the 



* Trans. N.Z. Inst., vol. 47, 1915, p. 397. 



