SPINDLE-LEGS 249 
The species Dennisia sagittifera, Norman, 1861, from 
Guernsey, has since been identified with the Mediterranean 
Anchistia scripta (Risso). The earlier specific name is 
referred to letter-like markings on the underside of the 
female, the later one to a beautiful arrow-like mark on the 
back, Norman describing the pleon as ‘ very ‘pale lilac, 
elegantly painted on the third segment with a chevron of 
a bright lilac.’ 
Lumily 7.—Nematocarcinide. 
The animal is smooth and slender. The first antennee 
have two long slender flagella, the second a long narrow 
scale and a long slender flagellum. The mandibles have a 
molar tubercle, cutting edge, and ‘palp.’ The trunk-legs 
have the fifth joint much longer than the sixth; the first 
two pairs are small and slender. ‘The telson is slender and 
tapering. 
Spence Bate places two genera in this family. 
Nemutocarcinus, A. Milne-Edwards, 1881, meaning the 
‘threadlike crustacean, has a two-jointed mandibular 
‘palp,’ a spoon-shaped terminal joint to the third maxilli- 
peds, the second trunk-legs much longer than the first, 
and the three following pairs extremely long. The first 
antenne are frequently three or four times the length of 
the animal. In the trunk-legs the articulation between 
the third and fourth joints is ‘of peculiar and unique 
character, and seems probably adapted for the great 
muscular strain consequent upon the length of the joints.’ 
The extremity of the third lies longitudinally under the 
fourth, so that these joints overlap and support each other. 
In the male the last three segments of the trunk have each 
ventrally a pair of flat anteriorly projecting plates or 
processes, only the middle pair being present in the female. 
The range of depth of the species, which are now. numerous, 
seems to be from two or three hundred down to about two 
thousand fathoms, and the distribution extends over the 
Pacific and Atlantic, and to the Mediterranean. Nemato- 
carcinus ensifer, S. 1. Smith, was originally made the type 
of a new genus Humiersia, which was afterwards recog- 
