TYNDARIDEA. 161 



dochrome, lokich near the period of conjugation exhibits a 

 somcichat stellate arrangement. Sporangia circidar, not 

 producing any material change in the primary form of 

 the cell. 



Conjugata cruciata Vaucher, Hist, cles Conf. pi. vi. fig. 4. ; 

 1)1. \ii. fig. 2. p. 77. 



Hab. Cheslmnt: A. H. H. 



I have but little doubt that this is the Conjugata cruciata of 

 Vaucher. It is the finest of all the Tyndaridece I have met 

 Avith. It is not common : and I have only once obtained it 

 with the sporangia formed. 



2. Tyndaridea anomala Ralfs. 

 Plate XXXVIII. Figs. 2, 3. 



Char. Filaments smaller than those of T. cruciata. Cells in 

 the young state usually about as long as broad, densely 

 filled tvith endochrome, and invested icith a broad and 

 very apparent mucous sheath; in a more advanced con- 

 dition the threads become narroioer, the sheath smaller, 

 and the endochrome more scattered, and sometimes even 

 stellated; finally, the sporangia are formed, rcldch are 

 circular, and protrude slightly into the tubes of commu- 

 nication of the filaments. 

 T. anomala Ealfs, MSS. 



Hah. Penzance and Dolgelly : Mr. Ralfs. High Beech : 

 A. H. H. In a boggy spot near Cross in Hand, oppo- 

 site to where the road branches to Hailsham ; Barcombe, 

 in Sussex, and Weston Bogs, near Southampton: Mr. 

 Jenner. 

 This remarkable and somewhat anomalous species was first 

 discovered by INIr. Ralfs, who submitted it to the examination 

 of several friends. For a long time, however, doubts were 

 entertained by many as to whether it really was a Tynda- 

 ridea or not ; doulits which I myself, in common with others, 

 for a pei'Iod entertained, but which I was happily enabled to 



