206 Part I11,—EHleventh Annual Report 
minute lateral sete. The anterior antenne are short and seven-jointed 
(fig. 8). The formula shows the relative length of the joints :— 
LOU LAR MOR ROCs “vous sas 
Lee) vik eee 1k Mae 
The inner branch of the posterior antennz is two-jointed (fig. 10). The 
mandibles are well developed ; apex of biting part broad, truncate, and 
armed with a row of stout blunt-pointed teeth, and a marginal divergent 
seta; there is also a stout tooth, larger than the others, arising from the 
lateral distal aspect of the mandible. Posterior foot-jaws stout, with a 
long slender terminal claw ; the inner margin of the second joint has an 
intermediate fringe of cilia, and two small setze near the distal end ; a pro- 
minent setose spine springs from the inner distal angle of the first joint, and 
immediately behind the seta is a transverse row of small hairs. The first 
pair of swimming feet, which somewhat resemble those of Dactylopus 
jlavus, differ in the spines on the exterior distal angles of the first and 
second joints of the outer branches being not larger than the marginal 
spine of the third joint, and in the apical setz of the third joint being 
non-geniculate; the outer margins of all the three joints are strongly 
setiferous ; the inner branch, which has also the outer margin of all the 
joints fringed with small sete, is armed with a stout, moderately long, 
and straight terminal spine and two setz (fig. 14). The inner branches 
of the second pair in the male terminate ina stout, slightly curved, conical 
spine as long as the third joint (fig. 15). The fourth pair resemble those 
of Dactylopus flavus, but the outer margins of both branches are setiferous, 
and the elongate sets on the inner margins are plumose (fig. 16). The 
inner segment of the basal joint of the fifth pair is slightly produced and 
rounded, and provided with four marginal sete, one being greatly 
elongate ; the secondary joint is short, obliquely truncate at the end, and 
furnished with four unequal terminal sete ; fifth pair in the male smaller, 
the inner portion of the basal joint less produced, and armed with two 
spine-like setze of unequal length, the longer one being plumose (fig. 18). 
Abdominal segments strongly ciliate. Caudal stylets short and stout ; 
the inner one ‘of the two caudal setze much longer than the other, and 
equal to half the length of the entire animal. ” Spermatophore broadly 
ovate (fig. 20). 
Several specimens of this species were obtained by washing some shells 
inhabited by Pagurus bernhardus, and collected west of Inchkeith. The 
copepods may only have been accidentally harbouring about the shells; 
they have scarcely the appearance of ‘commensals’ or ‘ messmates.’ 
Family SaPHIRINipé, Thorell. 
Genus Lichomolgus. 
Lichomolgus hirsutipes, sp. n. (provisional name). (Pl. IV. figs. 1-12.) 
Length 1:4 mm. (;4,th of an inch). Seen from above, the first four 
segments of the cephalo-thorax are together broadly ovate, the first seg- 
ment has a shield-like form, the fifth segment is narrow, and the proximal 
rather narrower than the distal end. Anterior antenne seven-jointed. 
The relative length of the joints is shown by the formula— 
19). a= Be 19) 20. esis) © sal 
aL Pe eee es ot Rondon. MO let hada he 
Posterior antenne four-jointed, third joint short, last joint bearing 
two stout and hooked terminal claws. Mandibles nearly as in Licho- 
