A FOSSIL MARINE DIATOMACEOUS DETOSIT- 11 



Hardmannianus, Grev., (" T. M. B.," Vol. xiv, p. 6, PI. 2, Fig. 17). 

 The markings are formed of large rough Costa?, arranged in four 

 sets, two of which converge to the processes, whilst the others 

 radiate along the lateral depressions continuously to the margin. 

 Longest diameter of largest observed -009" (PI. Ill, Fig. 13.) 



EuODIEiE. 



Euodia Janischii, Gran. (" V. H. Synop.," PL 127, Fig. 1-4). 

 — Scarce. 



E. striata, n. sp., Gr. & St. — Valve small, similar in shape to 

 Eunotia faba, Ehr., with small terminal nodules. Dorsal margin 

 moderately curved, ventral nearly straight. Stria? radial, about 

 nine in -001", composed of very short transverse lines about 45 

 iu -001". Length to -003". Breadth -00056". (PL III, Fig. 14). 



Hemiaulid^e. 



H. includeus (Ehr.), Grun. (" Franz. Jos. Land," p. 12, PL B., 

 Fig. 36, 38). Not unfrequent. H. capitatus, Grev. (" T. M. S.," 

 Vol. xiii, p. 54, PL 6, Fig. 24). seems a similar form, and perhaps 

 identical. 



H. ornithocephalus, Grev. (" T. M. S.," Vol. xiii, p. 32, PL 3, 

 Fig. 16). — A form which we identify with this species is not very 

 rare ; it is, however, slenderer than Greville's figure ; and the 

 horns more elongated, but in other respects similar. 



//. tenuiformis, Grev. («T. M. S.," Vol. xiii, p. 29, PL 3, Fig. 

 10). — Frequent. 



H. hjriformis, Grev. (loc. cit., p. 30, PL 3, Fig. 11).— Not 

 frequent. 



H. Barbadensis, Grun. (''Franz. Jos. Land," p. 11).— Frequent. 



H. polymorphic Grun. (loc. cit., p. 14). — Forms of this, vary- 

 ing considerably in appearance, are numerous. 



While this part of our paper was going through the press we 

 were shown a copy of a letter received by Professor Rupert Jones 

 from Captain F. W. Hutton, Professor at Canterbury College, 

 Christchurch, New Zealand, dated in January of this year, en- 

 closing a sample of this deposit for examination, and giving par- 

 ticulars of its geological age and position. It appears from this 

 that Captain Hutton is the original discoverer of this deposit ; 

 and we accordingly hasten to acknowledge our indebtedness to him 

 and tender him our thanks. 



