19 
male altogether wanting. Uropoda with the basal part and inner ramus spinulose 
inside. Telson sublaminar, tapering distally, tip obtusely truncate and spiniferous. 
Remarks .—This genus was established by the present author as early as 
in the year 1862, and may accordingly be regarded as the type of the present 
family, though the characters of the adult male have turned out to be rather 
anomalous. It contains, as yet, only 2 species, to be described below. 
l. Lamprops fasciata, G. 0. Sars. 
(PI. rx & X.) 
Lamprops fasciata, G. 0. Sars, Zoolog. Reise i Sommeren 1862, p. 44. 
Specific Character.- Body moderately slender, with the anterior division 
oblong oval in form. Carapace much shorter than the exposed part of trunk, 
blunt in front, and exhibiting on each side 3 obliquely cm-ved folds crossing 
the branchial regions; pseudorostral projection very short and obtuse, scarcely 
projecting beyond the blunt antero-lateral corners. Tail, inclusive of the telson, 
nearly as long as the anterior division. Eye rather conspicuous, with dark red 
pigment. Inferior antennae of male about half the length of the body, and less 
distinctly prehensile than in the next species. 1st pair of legs with the basal 
joint about the length of the succeeding joints combined, and but slightly curved; 
2nd pair with the last joint scarcely as long as the preceding one, both together 
equalling in length the antepenultimate one; the 3 posterior pairs densely setifer- 
ous. Uropoda somewhat exceeding in length the last 2 segments combined, inner 
ramus but little longer than the outer. Telson nearly twice as long as the last 
segment, and rather broad at the base, but rapidly tapering distally, being pro¬ 
vided with a single pair of slender lateral spines, apical spines 5 in number, the 
middle one and the 2 outermost much larger than the remaining 2, and strongly di¬ 
vergent. Body ornamented with a very conspicuous dark brownish violet pigment, 
forming more or less distinct transversal bands across the segments, and in the cara¬ 
pace occupying the greater part of the branchial regions behind the anterior fold. 
Length of adult female reaching to 9 mm., that of male considerably less. 
Remarks . — This form is easily recognizable by its very conspicuous co- 
ouring, which is retained for a long time even in preserved spsecimens. The 
adult male, unlike what is generally the case in Cumacea, does not differ much 
in its external appearance from the young female, with which it may easily be 
confounded. On a closer examination, however, it may be recognized by the presence 
of natatory exopodites on all the legs except the last pair, and by the structure 
of the inferior antennae. The latter organs, which are generally concealed are 
