122 



SrnitJi : Diatoms near Gritiisbv. 



Habenaria chloroleuca Rid. At Gibside (D. 3); Medomsley (D. 3); 



Shotley (N. 3) ; Muofg-leswick (D. i) ; Greenhead (N. i) ; Edmundbyers 



(D. i)'; Hunstanworth (D. i); and Blanchland (N. i). 

 Habenaria viridis R.Br. The Sneep (N. 2) ; Mug-g-leswick Moors (D. i) ; 



Edmundbyers (D. i) ; Blanchland (N. i). 

 Habenaria albida R.Br. Knuckton Burn (D. i); Blanchland Common 



(X. I). 



DIATOMS NEAR GRIMSBY. 



ARTHUR SMITH, F.L.S., F.E.S., f.tc, 

 Hon. Secretary and Curator of the Grinishy and District Naiurah'sts' Society. 



The following- species were recently collected by myself, and 

 have been placed on one of a series of ' type slides,' now being 

 prepared towards obtaining a representative set of Lincolnshire 

 Diatoms. The specimens were taken from a series of filtered 

 dippings in Clee Parish, some from the algae-covered sides of 

 the trough of a spring, others from a brook near by. 



The specimens occurring under this half-inch of cover glass 

 are enumerated below and have been confirmed by Mr. W. J. 

 Wood, F.R.M.S. 



Cymbella affinis Kutz. 

 Stauroneis Legume Ehr. 

 Stauroneis Smithii Grun. 

 Stauroneis anceps Ehr. 

 Navlcula amphirhyncus Ehr. 

 Navicula lanceolata Kutz. 

 Navicula gfreg^aria Donk. 

 Navicula cuspidata Kutz. 

 Navicula amphisbsena Bory. 

 Pinnularia Brebissonii Kutz. 

 Pinnularia viridis Kutz. 

 Vanheurkia rhomboides 



var. Saxonica Rab. 

 Pleurosigma Spencerii 



var. Smithii Grun. 

 Pleurosig"ma acuminatum Grun. 

 Pieurosigfma attenuatum W. Sm. 

 Gomphonema parvulum Kutz. 

 Rhoicosphenia curvata Grun. 

 Achnanthidium flexellum Breb. 

 Achnanthes microcephahim Kutz. 

 Eunota gracilis Ehr. 

 Synedra ulna Ehr. 

 Synedra ulna var vitrea. 

 Frag-ilaria construens Ehr. 

 Fraarilaria construens var. binodis. 



Frag-ilaria construens var. venter. 

 Frag-ilaria capucina Desm. 

 Meridion circulare Ag-. 

 Diatoma vulgare Bor_y. 

 Diatoma elong-atum Ag-. 

 Diatoma hiemale Heib. 

 Surirella ovalis Breb. 

 Surirella ovalis var. minuta Breb. 

 Surirella ovalis 



var. pinnata W. Sm. 

 Surirella ovalis 



var. Brig-htwellii W.Sm. 

 Surirella ovalis var. apiculata. 

 Surirella bifrons. 

 Surirella ovata Kutz. 

 Surirella linearis W.Sm. 

 Cymatopleura Solea W.Sm. 

 Cymatopleura Solea 



var. apiculata W.Sm. 

 Nitzschia dissipata Grun. 

 Nitzschia acuminata Grun. 

 Nitzschia ang-ustata Grun. 

 Nitzschia paradoxa Grun. 

 Nitzschia Denticula Grun. 

 Hantzschia amphioxys Ehr. 



Naturalist, 



