416 iM. H. V. Mohl on the Structure of Chlorophyll, 



EXPLANATION OF PLATES X. and XL 

 Plate X. 



Fig. 1. Vhalangium cornuium, body of the female: a, side view of the 

 cephalothorax ; b, part of the cepbalothorax and one of the falces 

 of the male. 



Fiff. 2. PhalaiKj'mm iirnifjerum, body of the female : a, side view of the 

 cephalothorax ; b, side view of the body with the falces and palpi ; 



c, body of the male ; d, one of the falces. 



Fig. 3. Phahingium purietinum, body of the female : a, side view of the 

 cejdialothorax. 



Fig. -1. Megabitiius corniger, body of the male : a, eye-eminence seen from 

 above ; b, side view of the same ; c, one of the falces of the 

 male ; d, palpi of male and female. 



Fig. 5. Megabunus insignis, body of the female : a, side view of the eye- 

 eminence ; b, the same seen from above ; c, one of the legs ; 



d, side view of the body. 



Plate XL 



Fig. 6. Opilio histrix, body of the female : a, side view of the eye-eminence ; 



b, one of the legs ; c, frontal teeth. 



Fig. 7. Leiobunus rotundas, body of the female : a, body of the male, with 

 one of the palpi attached ; b, side view of the eye-eminence ; 



c, one of tlie legs ; d, one of the palpi. 



Fig. 8. Nemastoma chrysomelus, body of the female : a, side view of the 

 body in the male, showing one of the palpi and falces ; b, eye- 

 emiiience or scale ; c, apex of the abdomen ; d, one of the falces 

 in the female ; e, the same in the male. 



Fig. [). Homnlenotus quadrideniatus, the body with legs and palpus at- 

 tached on one side. 



XXXVI.— On the Structure of Chlorophyll. 

 By Hugo von Mohl. 



[Concluded from p. 329.] 



"With the pellicular form of the chlorophyll, such as occurs in 

 Zijynema (and in still more intimately connected layers in Dra- 

 purnaldia, Ulothrix, &c.), as a more or less perfect investment of 

 the cell-wall, is connected in many respects the chlorophyll of 

 Anthoceros, for this, in like manner, docs not possess the form 

 of isolated grains, but presents itself in every cell as a single 

 chlorophyll-mass, which in a portion of the cells has a mem- 

 branous form. But the chlorophyll of Anthoceros is distin- 

 guished from that of Zygnema, by the fact that in the latter 

 genus it stands in no direct connexion with the central nucleus, 

 and forms a ])eripheiical layer, while in Anthoceros the green 

 colouring matter is connected with one of the masses of proto- 

 plasm enveloping the nucleus, and, at least in a portion of the 

 cells, occupies a central position. 



