416 M.U^w.Mohl on the Structure of ChlorophylL 



EXPLANATION OF PLATES X. and XL 

 Plate X. 



Mff. 1. Phalangium cornutum, body of the female: a, side view of the 



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



of the male. 



^ig. 2. Phalangium urnigerum, body of the female : a, side view of the 



.• cei)halotliorax ; b, side view of the body with the falces and palpi ; 



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



Mg. 3. Phalangium parietinum, body of the female : a, side view of the 

 cephalothorax. 



Fig. 4. Megabunus 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. 



i^ig, 5. Megabunus insigniSy body of the female : a, side view of the eye- 

 eminence; 6, 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. 1 . 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 the legs ; d, one of the palpi. 



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

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

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

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



Fig. 9. Homalenotus quadridentatus, 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 

 Zygnema (and in still more intimately connected layers in Dra^ 

 parnaldia, Ulothriac, &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, does 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 peripherical 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. 



