422 



Glacial Problems in Yorkshire and Lincolnshire. 



ensifer. Sig Thor, however (see ' Nyt Mag-azin for Naturvidens- 

 kaberne ' B. 41, H.I. Kr. ania 1903), considers that the g-enus, 

 * Laminipes ' of Piersig, cannot be established, and that this mite 

 ought to be separated from the other mites with which hitherto 

 it has been associated, and proposes the name Pionides ensifer. 

 As far as my own opinion is of any value I agree with him. 

 The most remarkable thing about this mite is the large and very 

 conspicuous swordlike bristle to be found at the distal end of the 

 fourth joint of the hind leg. The mite, in other respects, agrees 

 fairly well with the general characters oi ' Piona Neum ' or 

 '■Laminipes Piersig.' Mr. Soar's drawings, which were made 

 from my specimen, are sufficiently characteristic to enable any- 

 one to recognise the mite when met with. 



Fig. I. — Dorsal surface of mite. 



Fig. 2. — Ventral surface. 



Fig. 3. — Fourth and fifth joints of last leg much magnified. 



Fig. 4. — Genital aperture plates and discs. 



Fig. 5. — Maxillary palpus 



Measurements: — Length, o'88 mm.; breadth, 0*68 mm.; 

 length of palpus, 0-36 mm.; length of first leg, 0*88 mm.; length 

 of second leg, i "o mm.; length of third leg, o'68 mm.; length of 

 fourth leg, i '04 mm. 



GLACIAL PROBLEMS IN YORKSHIRE 

 AND LINCOLNSHIRE. 



At the recent meeting of the British Association a preliminary 

 report of the Committee (consisting of Messrs. G. W. Lamp- 

 lugh (Chairman), J. W. Stather (Secretary), F. W. Harmer, 

 P. F. Kendall, Clement Reid, and Thomas Sheppard) appointed 

 to investigate the estuarine deposit at Kirmington, Lincolnshire, 

 and to consider its position with regard to the Glacial deposits, 

 was presented. 



A favourable opportunity having presented itself during the 

 summer, operations were undertaken to investigate the beds 

 underlying the estuarine deposit, by means of boring, and the 

 results obtained are of such general interest that it is proposed 

 to continue the work. 



While it would be premature to enter into a detailed account 

 of the investigation, it may be advisable to state briefly the 



Naturalist, 



