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INFUSORIA OF THE GRIMSBY DISTRICT. 



ARTHUR SMITH, F.L.S., F.E.S., etc., 

 Hon. Secretary and Curator of the Grimsby and District Naturalists' Society. 



I believe that this list is the first on the subject that has been 

 published for this County (Lincolnshire), certainly for this 

 district ; and I have to thank members of the Grimsby Natural- 

 ists' Society for their help in bringing- samples of water and 

 deposit from localities they may have been visiting. To Mr. 

 Parker I am indebted for all records from Irby. The rest are 

 recorded from my own takings, together with those brought to 

 me. The chief work of identification, however, has been carried 

 out most willingly by our best of local microscopists, Mr. Walter 

 J. Wood, F.R.M.S., who has spent much time and care in 

 naming specimens of microscopic pond life. The whole of these 

 have been taken in the Grimsby area, from June 14th to Septem- 

 ber 30th, 1900. 



As will be seen, they have been roughly classified into three 

 chief groups, and the names are chosen from the most popular 

 works on the subject, which will give a clue to microscopists 

 who find so much difficulty arising out of the many synonyms 

 Sfiven to these tinv organisms. 



FLAGELLATA. 



Monas lens Ehr. 



Brocklesby, Humberstone, 

 Little Cotes, Clee. 

 Monas crepusculina Ehr. 



Brocklesby. 



Cercomonas globulus. 



Brocklesby. 



Heterometa ovata. Little Cotes. 

 Trichomonas limacis Duj. Clee. 

 Trachelomonas cylindrica E. 



Irby. 



Euglena viridis E. 



Humberstone, Little Cotes, 

 Irby, Keelby, Clee, Great 

 Cotes. 



Euglena acus E. Irby. 

 Euglena longicauda Duj. 



Irby, Keelby, Clee, Great Cotes, 

 Scatho. 



Euglena (Phacus) pleuronotes 



Duj. Irby. 



igc2 Juiy 1. 



Astasia limpida Ehr. Clee. 

 Cryptomonas globulus Ehr. 



Great Cotes. 

 Chaetoglena volvocina. 



Little Cotes. 

 Dinobryon sertularia. Irby. 

 Amblyophis viridis Ehr. 



Irby, Clee. 



Crumenula texta. 



Clee, Little Cotes. 

 Cyclidium glaucoma. 



Great Cote-,. 

 CILIATA. 

 Paramecium aurelia E. 



Brocklesby, Humberstone, Irby, 

 Little Cotes, Healing-, Keelby, 

 Scatho. 

 Alyscum saltans Duj. 



Humberstone, Great Cotes, 

 Scatho, Little Cotes. 

 Coleps hirtus Ehr. 



Humberstone, Healing-, Irby. 

 Clee, Great Cotes, Scatho. 



