232 Dr. T. A. Chapman’s 
radians in showing indications of a neck, when seen in 
profile; but when looked down upon, on the style-bearing 
surface, it is very broad, especially towards the head, and 
has seven or eight rows of styles, which are very small 
towards the head; the stylous ridge is easily twisted in 
getting into position for observation. 
8. EL. tristis (Fig. 50). One may describe 
the clasp of this form as having acquired permanently and 
with much exaggeration a peculiar twist, such as the 
stylous ridge of edda easily falls into in a trifling degree, 
but so exaggerated as to be almost different in kind, 
though difficult to describe. 
9. H. dabanensis (Fig. 51). The tegumen 
is very large, especially the central process; the clasp has 
the general form of that of epispodea, but is larger and 
stronger, and with the stylous ridge twice as long. The 
styles are very large and bold, in several rows, curling over 
and especially overhanging their base towards the body. 
10. £. tundra (Fig. 51 bis). The facies of 
this species is very much that of EH. meta, but it is 
probably nearer dabanensis. In Dr. Standinger’s two 
original specimens the neuration is Asiatic and, especially 
in the male, 10 arises very far along 7. The appendages 
in the male specimen happen to be well expanded, and 
are capable of being examined fairly satisfactorily in situ, 
but cannot be so easily sketched under the camera as if 
removed; the processes of the tegumen are long, and the 
lateral ones very sharp and slender. The form of the 
clasp is almost identical with that of dabanensis, but the 
spines are not so bold and pronounced, nearer in fact to 
those of meta, and are in a double row. 
ll. #. discoidalis (Fig. 52). The central 
process of the tegumen is large and heavy, not unlike that 
of E£. hewitsonw; the stylous surface of the clasp is more 
terminal and less marginal than in others of this group, 
and passes round the head, suggesting an alliance with 
E. hewitsonu or L. fasciata. 
Group IX. 1. #. fasciata (Fig. 53), This has a very 
large, broad, rounded clasp, with a heavy armature of large 
styles surrounding the end. The form of the clasp may 
perhaps be derived from that of group VIII. by way of 
