NOTICES OF NORTH AMl-im AN FUNGI. 69 



* Diachea elegans. *K— Car. Inf. No. 1157. D. leucostyla, 

 Schwein. is the same. 



* Enerthenema elegans. Bowman.— On boards of a sIkmI. Car. 

 Inf. No. 1301. 



373. Stemonitis tenerrima. B. $ C.— Stipite filiformi, peridio 

 toto percurso cylindrieo fusco ; capillitio pallido tenerrimo ; sporis 

 carneis. On herbaceous stems. Car. Inf. No. 1343. 



Stem filiform, penetrating to the apex: peridium cylindrical, 

 brown ; capillitium very delicate, pallid ; spores flesh-coloured. A 

 small, delicate species. 



* Stemonitis ovata. P.— Car. Inf. No. 1300. 



* Stemonitis oblonga. Fr.— Car. Sup., Curtis. No. 244. 



* Stemonitis obtusata. Fr.— Alabama, Peters. No. 6007. 



* Stemonitis physaroides— A. $ S. — Ohio. No. 196/ Var. 

 subtrnea. 



* Stemonitis pulchella. Bab. — Car. Inf. No. 2041. On 

 grass. 



374. Stemonitis porphyra. B.# C— Stipite gracili nigro ; peri- 

 dio globoso columbino ; capillitio porphyro. On pine wood. 



Steua slender, black, shining ; peridium globose, shining like a 

 pigeon's breast; capillitium purple. 



375. Phoma longipes. B. <f C— Subcortical, gregarium ; sporo- 

 phoris multoties sporis minutis breviter oblongis longioribus. On 

 Morns rubra. Car. Inf. No. 2101. 



Produced under the bark, in which it makes little pustules, at 

 length more or less free, sporophores many times longer than the 

 short, oblong, minute spores. Apparently the same species occurs 

 on tender shoots of Juniperus Virginica. Car. Sup., No. 6468, 

 but the perithecia are more scattered. V> ch 



THE NATURAL HISTORY OF THE BRITISH 

 DIATOMACE/E.— (Parts 1, 2, 3.)— By A. S. Donkin, M.D. 



London — Van Voorst. 1873. 



Perhaps no branch of natural history, particularly that relating 

 to the lower organisms, has occupied the attention of the micro- 

 scopist more than the Diatomacese. 



The synopsis of British Diatomaceaa, by Professor Smith, was 

 fir 8 1, and indeedtheonly English work in which any scientific arrange- 

 ment was attempted, and since its publication (20 years ago) very 

 many new species have, from time to time, been published in various 

 periodicals ; a new edition of Smith's work, or a new synopsis, 

 therefore became highly desirable. Dr. Donkin has chosen the 

 latter alternative, and adopts an arrangement of his own. He 

 proposes to divide the work into two portions, viz., the Introduc- 

 tion, which will contain the natural history, classification, structure, 



