382 Prof. E. Suess on the Recent Terebratulse. 



On Rhus copallina. Spores, when full-grown, '0023 inch 

 long. 



Plate XVI. fig. 14. H. dendroideum, with spores magnified. 



947. H. apicale, n. sp. rioccis simplicibus Isevibus sursum 

 attenuatis ; sporis apicalibus ellipticis 3-septatis utrinque hya- 

 linis. 



On rotten sticks. Langley, Wilts., April 1859. 



Threads simple, even, attenuated upwards, articulated, the 

 ultimate joint having two or three little inequalities, to each of 

 which is attached an elliptic spore '0007 inch long, triseptate, 

 dark in the centre and hyaline at either extremity. 



A singular and very distinct species. 



Plate XVI. fig. 15. Threads and spores magnified. 



948. H. altum, Preuss in Deutsch. Fl. Fasc. 2G. t. 17. On 

 dead sticks. Twycross, Rev. A. Bloxam. 



949. Mystrosporium stemphylium, Corda, Fasc. 2. f. 61. On 

 dead wood. Bury St. Edmunds, Mr. E. Skepper. Spores 

 •0015 inch in diameter. 



950. Aci'othecium simplex, n. sp. Floccis simplicibus flexuosis 

 irregularibus septatis fuscis ; sporis paucis apicalibus 4-5 -sep- 

 tatis oblongis subclavatis hyalinis leviter coloratis. 



■ On nettle-stems, with Arthrobotryum, &c. Batheaston, Dec. 

 1858. 



Threads simple, flexuose, irregular, septate, brown; spores 

 terminal, about three together, oblong, subclavate, with from 

 four to five septa, hyaline, slightly coloured. 



Dififers from A. multispornm, Preuss, in the simple stem with- 

 out any creeping threads, and the small number of spores. 



Plate XVI. fig. 16. Threads and sjwres magnified. 



951. Helicocoryne viridis, Corda, Fasc. 6. f. 38. On dead 

 wood, with Mystrosporium stemphylium. Bury St. Edmuud.s^ 

 Mr. E. Skepper. 



[To be continued.] 



XLV. — On the Recent Terebratulre. By Prof. Suess, of Vienna, 



To the Editors of the Annals of Natural History. 

 Gentlemen, 



In the March Number of your excellent periodical, Mr. 

 Lovell Reeve has inserted " A Revision of the History, Syn- 

 onymy, and Geographical Distribution of the recent Terehra- 

 tulce," and has had the politeness to communicate to me an 

 abstract of his paper, enumerating certain errors said to be con- 

 tained in the memoir on the geographical distribution of recent 



