TYNDARIDEA. 161 



(lochrome, winch near the period of conjugation exhibits a 

 somewhat stellate arrangement. Sporangia circular, 7iot 

 producing any material change in the primary form of 

 the cell. 



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

 pi. yii. fig. 2. p. 77. 



Hah. Clieshiint : A. H. H. 



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

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

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

 with the sporangia formed. 



2. Tyndaridea anomala Ralfs. 

 Plate XXXYIII. Figs. 2, 3. 



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

 the young state usually about as long as broad, densely 

 filled icith endochrome, and invested icith a broad and 

 very apparent mucous sheath; in a more advanced con- 

 dition the threads become narrower, the sheath smaller, 

 and the endochrome more scattered, and sometimes even 

 stellated ; finally, the sporangia are formed, which are 

 circidar, and protrude slightly into the tubes of commu- 

 nication of the filaments. 



T. anomala Ralfs, MSS. 



Ilab. 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 Mr. Kalfs, Avho 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 ; doul)ts which I myself, in common with others, 

 for a period entertained, but which I was happily enabled to 



M 



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