4 THE GENUS TRACHELOMONAS, 



14, 15, 21, and even 24 varieties. The last mentioned (151) was 

 from a shallow, insignificant rainwater-pool on grass-land, and 

 almost every one of the 24 varieties was in profusion. 



LiSMORE GATHERINGS. — Only 12 forms were noted in the Rich- 

 mond River, out of 20 very rich squeezings from weeds, and of 

 these 12, the larger number were out of one sample (225), and 

 extremely scarce. Of 23 ground-gatherings, only 9 contained 

 Trachelomonas in any quantity, but these were very fine. They 

 were taken in the winter of 1914, from shallow rainwater-meres, 

 and small pools on level grass-lands. One of them (237), besides 

 18 varieties of Trachelotnonas^ yielded Euglena viridis, Eu. acus, 

 E^t. pisciformis, En. deses, Eu. tripteris and var., Eu. oxyuris, 

 Phacus pleuronectes^ Ph. lo7igicauda, Ph. pyrum, Ph. mo7iilata 

 var. suecica Lemm., Phacus, sp.n., Chlamydomouas globulosa, 

 Oo7iium pectorale, Pandoinnamoricm, and S]>ondylomoruyn quater- 

 narium, all in great profusion. Twenty-one varieties of Trache- 

 lomonas had been obtained from the same place a week before. 



Another noteworthy Lismore sample is No. 242, from a muddy 

 rainwater-swamp by the roadside at the foot of Girard's Hill. It 

 yielded 20 forms of Trachelomonas, Volvox Bernardii, Euglena 

 tripte7'is var., 5 varieties of Lepocinclis (Chloropeltis), Synura 

 uvella, Eudorma elegans and var., Pandorina morum, Chlamy- 

 domonas glohulosa, and Chi. intermedia, all in quantity. 



Species. — Altogether, 104 forms of Trachelomonas are men- 

 tioned below as occurring in this country. Of these, 38 are 

 common to both Sydney and Lismore, 37 have, so far, been found 

 only in Sydney, and 29 at Lismore only. At the former, the 

 total number of varieties noted was 75, at the latter 67. The 

 surface-soil, in districts where gatherings were made, was of three 

 different kinds : at Botany, Coogee, and Centennial Park, sand; 

 at Auburn, Canley Vale, Fairfield, Guildford, and Parramatta, 

 clay (often right up to the surface); in the Lismore district, deep 

 black loam. Yet, under all circumstances, the forms described 

 retain their characteristics and dimensions, and all the common 

 forms noted originally round Sydney are found also at Lismore, 

 though the two districts are 350 miles apart. These species and 



