W. H. Leigh-Sharpe 
121 
which is small, bearing a yet smaller accessory claw, and flex it down against 
the basal joint. These appendages appear to have undergone considerable 
outward rotation from the position normally found in this family. Being but 
feebly clawed, they seem to have lost their functions both of attachment and 
of feeding. 
The Mouth parts (Fig. 3). The mouth, which is tubular, is situated at the 
summit of a cone, short in the female, but more than usually long in the 
male (Fig. 7). It forms a suctorial proboscis, and is composed of an upper 
and a lower lip, fringed with numerous ordinary setae. The lips are joined in 
the same manner in both sexes, and present no differences from the condition 
that obtains in Lernaeopoda. 
* 
The immature females, each individual bearing two pigmy males 
(Fig. 5), are of special interest, though such a condition has been previously 
Fig. 5. Clavella sciatherica. An immature female carrying two pigmy males (<$). C. cephalo- 
thorax; N. neck; 2Mx. second maxilla; b. bulla; d. disc; Tr. trunk; G.P. genital process 
(abdomen); H. host. 
recorded, and superficially figured in C. uncinata, and is said to be not un¬ 
common in that species. The cephalothorax is, at this early stage, strikingly 
elongated, but the slightly expanded head (mentioned as a characteristic of 
other species) may be due to compression on mounting it as a slide for micro¬ 
scopical examination. The trunk is more vase-like than in the adult, and the 
coelomic cavities that will eventually become the ovaries are already recog¬ 
nizable within it. At the posterior end a spherical abdomen is present which 
has not dwindled down to a mere genital process. The abdomen is separated 
from the trunk bv a deep constriction. At the posterior pole of the abdomen 
is situated the anus, the posterior end of the alimentary canal being difficult 
of recognition as it is void of faecal matter. Lateial in position, some little 
distance from the anus on either side, are the projecting tumid lips of the 
apertures from which the eggstrings or ovisacs will presently emerge. They 
possess a crenated margin, which may possibly be an artefact due to shrinkage 
in the Farrant’s medium. 
