CRUSTACEANS 



C. elliptica from ponds in Lancashire, and Candona reptans as found at Scaris- 

 brick, 1 all these being, like his Cladocera, freshwater species. The first of 

 them is now called Notodromas monac ha (O. F. Miiller). Cyprisminuta (Baird) 

 is recognised as a synonym of Cyclocypris faevis (O. F. Miiller) ; C. elliptica 

 (Baird) retains its name, but Baird's Candona reptans has been transferred to 

 the genus Erpetocypris (Brady and Norman), its generic and its specific name 

 now alike pointing to the fact that this species has lost the power of swimming, 

 and is content to crawl and creep. Cypris obliqua (Brady) has been taken by 

 Dr. Brady in High Cross Tarn, Coniston. 8 All the preceding species belong 

 to the family Cypridids. In the family Cytheridae, Lancashire has several 

 species of the genus Cythere (O. F. Miiller), namely, C. lutea (Miiller) from 

 Scarphole Scar, near Duddon ; C. pellucida (Baird), described by Brady and 

 Norman as essentially a brackish-water species, obtained by Mr. Andrew Scott 

 at Piel ; C, gibbosa (Brady and Robertson) from the same locality ; and 

 C. Robertsoni (Brady) from the mussel beds at Morecambe. Cytheridea elongata 

 (Brady) was obtained at Morecambe by Scott, and C. torosa (Rupert Jones) by 

 Dr. Norman at Crossens. 8 Loxoconcha impressa (Baird) is recorded by Scott 

 from Piel ; L. guttata (Norman) from Morecambe ; L. tamarindus (R. Jones) 

 from Piel and Duddon ; this species having been also earlier supplied to Brady 

 by Mr. E. C. Davison from the River Ribble. 4 Cytherura sella (Sars) is 

 reported by Scott from Piel and Morecambe ; C. striata (Sars) from More- 

 cambe ; C. angulata (Brady) from Piel ; C. nigrescent (Baird) from Piel ; 

 C. cellulosa (Norman) from Morecambe. Cytheropteron latissimum (Norman) 

 is recorded by Brady as found by E. C. Davison ' in shell-sand from the River 

 Ribble,' 6 and C. humile (Brady and Norman), described by those authors as 'a 

 most remarkable little species, on account of the excessive width as compared 

 with the height,' 6 is recorded by A. Scott from near Piel. Sclerocbilus con- 

 tortus (Norman) was found by Scott in the mussel beds of Piel, Duddon, and 

 Morecambe ; Cytheridea subulata (Brady) at Piel ; and of the family (or sub- 

 family) Paradoxostomatidas the same author has found Paradoxostoma variabile 

 (Baird) at Duddon, and at Piel P. abbreviation (Sars), and P.flexuosum (Brady). 

 All these species belong to the section of the Ostracoda called Podocopa, a tribe 

 in which there is no heart. The species obtained by Mr. A. Scott from the 

 mussel beds at Piel, Duddon, and Morecambe were identified for him by his 

 father, the veteran expert in Entomostraca, Dr. Thomas Scott, LL.D., F.L.S. 7 

 On some of them Mr. Andrew Scott has since published remarks of his own. 

 Of Cythere pellucida (Baird) he says : ' This form is very abundant, especially 

 during the summer months, on the muddy sandy flats along the coast ; common 

 on the mud flats near Piel practically throughout the year.' Of C. porcellanea 

 (Brady) he says : ' Usually associated with C. pellucida ; some care has to be 

 taken in identifying the two forms owing to the amount of variation that 

 occurs amongst the two species ; in the same locality as the last.' Upon 

 C. gibbosa (Brady and Robertson) he remarks : ' This ostracod is frequently 

 found in gatherings from the mud flats left dry by the receding tide ; associated 

 with C. pellucida and C. porcellanea^ but is easily distinguished from either of 



1 Fauna of Liverpool, 54. Trans. Royal Dublin Soc. (Ser. 3), iv. 77 (1889). 



3 Op. cit. p. 175. * Monograph of British Ostracoda, Trans. Linn. Sue. Lond. xxvi. 436 (1868). 



6 Op. cit. p. 448. Trans. Royal Dublin Soc. (Ser. z), iv. 220. 



7 Trans. Liverp. Bio/. Soc. x. 127-131 (1896). 



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