ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 791 



forme must also disappear as a species, being merely a variety of 

 j^. cinijiorum Vauch. 



Flahaiilt further identifies Nostoc coriaceum Vaucb. as a form of 

 N. cinijiorum. 



New Chromophyton.* — M. Comu describes an alga coloured by 

 a yellow pigment found in a spring of fresh water, in company with 

 Navicula, and possessing a siliceous coat similar to that of diatoms. 

 He regards it as nearly allied to Woronin's Ghromophyton Bosanoffii,^^ 

 differing from that species in its siliceous envelope, and in the posses- 

 sion of stalked bodies which may be sporangia. He proposes for it 

 the provisional name Chromophyton Woronini. 



Wolle's Desmids of the United States.|— The Eev. F. Wolle's 

 work on the desmids of the United States will be found useful by 

 English cryptogamists who are not in possession of Ealfs' work. 

 Eleven hundred coloured figures are given illustrating all the species 

 and varieties described in the text. 



New Diatoms.— Diatoms from Stomachs of Japanese Oysters.§ 



— F. Kitton describes some new diatoms taken by Mr. G. Sturt from 

 the stomachs of some " tinned " oysters from Japan, sent to the 

 Fisheries Exhibition, viz., Aulacodiscua Sturtii and Amphipleura 

 pellucida var. rectus. Nearly 90 other marine species as well as a 

 considerable number of fresh-water species from the stomachs were 

 identified by Mr. E. Grove. 



Mr. Stm-t's directions for examining the stomachs of oysters, &c., 

 are as follows : — " After opening the tin and pouring off the liquid 

 contents, I empty out the oysters and pick out the stomachs 

 (which look like dark little sacs, and as a rule are free, or only 

 partially surrounded by a little fatty matter, which is easily taken 

 off). I then heat in a glass to boiling point five or six ounces of 

 nitric acid, in which I drop one by one the stomachs, waiting until 

 each is dissolved before adding another. After all have been dis- 

 solved I add an ounce of hydrochloric acid, and continue the boiling 

 for five minutes, dropping in at intervals a little bichromate of potash. 

 I now fill up the flask with hot water and empty the whole into a 

 large beaker, filling up with the hot water (the fat rises to the 

 surface, and on cooling congeals on the top, and is easily skimmed 

 off). I wash away the acid, using hot water, and boil in soap and 

 water according to Prof. H. L. Smith's directions. If this does not 

 get rid of the organic matter, I boil in sulphuric acid and chlorate of 

 potash." The water used for washing must be filtered rain or dis- 

 tilled water and free from all trace of acid. 



Mr, Kitton also describes, from other localities, the following new 

 species : — Sutirella carinata and ScejAroneis (?) clavus. 



* Bull. Soc. Bot, France, xxx. (1883) Sess. Extr., pp. xciii.-v. 

 t S.o tliia .Journal, i. (1881) p. 100; iii. (188.S) p. 108 and 8«3. 

 % Wolle, F., ' DcsmiflH of tho United States and lint of Pod lustrums.' 1G8 pp 

 and 53 pis. 8vo, Bethlehem, Pa., 1884. 



§ Jourii. Quek. Micr. Club, ii. (1884) pp. lG-23 (1 pi.). 



