DESCRIPTION OF THE PLATES. 
ventral line of dehiscence of the epicarp : magnified. Fig. 6, a seed, more magnified, covered 
with its shining crustaceous arUlus, which is entire, except at the nearly lateral long um- 
bilicated hiliim. Fig. 7 is a side view of the same. Fig. 8 is a view of the contrary side, 
with the whole of the external crustaceous coating removed, showing the chalaza and the 
dextral line of raphe continuous with the main or sinistral cord of the raphe, hidden on the 
opposite side in the deep groove fonned there by the hippocrepical plicature of the albumen. 
Fig. 9, the same, seen on one of its broad faces, showing the apical chalaza and the deep 
lateral groove formed by the said plicature. Fig. 10, the same view, the lax portion of the 
interplicated proper integuments, to which the sinistral or main cord of the raphe is attached, 
being drawn out by force from its natural position in the groove. Fig. 11, the plicated 
embryo, removed from the albumen, as seen in its natural form. Fig. 12, the same 
flattened out. Fig. 13, a transverse section of a seed, above the line of the umbdicated 
hilum, showing the following parts : — 1. The outer crustaceous entire tunic or aiillus, an 
open space always existing on the two opposite margins of the seed between it and the 
proper integnment, where they do not touch each other ; in these two open spaces the two 
cords of the raphe are found imbedded in the intermediate integument, showing that the 
continuous cord of the raphe has no connexion whatever with the external crustaceous shell, 
except at the point of its origin near the hiliun, and proving that the crustaceous tunic is 
a true ariUus, although crustaceous in its texture. 2. The two proper integuments of the 
seed (testa and tegmen), w^hich are membranaceous, and closely applied to one another, 
except in the deep groove formed by the plicature of the albumen : here the tegmen, or 
inner integument, is extended over the whole surface of this pheature; the testa, however, 
scarcely enters into it, but passes over the mouth of the groove, leaving a long deep narrow 
open space between the two integuments, after the manner shown in Bhamnns caiharticus ; 
it is along the mouth of this groove, where the testa passes over it, that the main cord or 
sinistral line of raphe is seen imbedded in its tissues : this is also shown in fig. 10, where 
the two integuments with the cord of the raphe are forced out of their natural position. 
3. The albumen closely invested by the integument, bent into a hippocrepical shape. 
4. The embryo, partaking of the same form : all equally magnified. Fig. 14, an ovule at 
the period of impregnation, supported on its stipitated funicle, showing the commencement 
of the placentary development, which afterward becomes extended over the ovule as an 
arillus, much magnified. Fig. 15, the same funicle and beginning of the placentary 
expansion, more highly magnified. 
C. Details of Khamnus Alateenus. 
Fig. 1, a seed, seen upon its ventral face. Fig. 2, the same seen edgeways. Fig. 3, a 
view of the same on its dorsal face, where there is a longitudinal deep groove. Fig. 4, a 
transverse view of the same, showing the following parts : — 1°, the external crustaceous 
shell or arillus, showing the dorsal groove formed by the interruption of its continuity ; 
2°, the two proper membranaceous integuments which closely invest the albumen, leaving 
a distinct vacuity between them and the outer crustaceous tunic, along the middle of the 
two faces, where the dorsal and ventral cords of the raphe are imbedded in tbe outer of 
the two integuments : here is a further proof of the nature and origin of the crustaceous 
coating ; 3°, the albumen, distinctly curved ; 4°, the enclosed embryo, partaking of the 
same curvature : all magnified. Fig. 5, longitudinal section of one of the cells of the 
ovary, showing its erect ovule, with a dorsal raphe supported on a long funicle. Fig. 6, the 
same ovule, showing the small protuberance in connexion with the placenta at the foot of 
the funicle which forms the growing-point of the future ariUus. Fig. 7, the same, where 
the arilliform coating has grown over and concealed the primine and its funicular support, 
as shown in the previous species ; all highly magnified. 
