THE ANTHURIDA Sot 
Some eight genera are included in this family. The 
first four to be mentioned agree in having two rounded 
lobes to the lower lip, the mandibles with a cutting edge 
of two or three blunt teeth and a sort of semicircular saw 
in. place of molar and spine-row, the ‘ palp’ three-jointed ; 
the first maxille are simple, with apical teeth, without 
‘palp;’ the second are slightly cleft at the apex; the 
maxillipeds have from three to six broad flattened joints 
including the basal piece. 
Anthira, Leach, 1814, has the flagella of both pairs of 
antenne few-jointed in the female, of the first multi- 
articulate in the male; the maxillipeds three-jointed; the 
first five pleon-segments fused in the female, partially 
distinct in the male. The telson is not coalesced with the 
preceding segment. 
Cyathira, Norman and Stebbing, 1886, has the flagella 
of both antennz rudimentary, of the first perhaps not 
greatly developed in the male; the maxillipeds four- 
jointed ; the first five .pleon-segments fused, at least dor- 
sally, in the female. 
Anthelira, Norman and Stebbing, 1886, has the flagella 
of both antennz multiarticulate, of the first pair brush- 
like in the male; the maxillipeds six-jointed; the pleon- 
segments distinct, and the telson in the type-species 
separate from the sixth segment. 
Hyssiira, Norman and Stebbing, 1886, has the flagella 
of both antennze multiarticulate; the maxillipeds six- 
jointed ; the seventh segment of the perezeon seemingly de- 
void of limbs; the first five pleon-segments distinct, fully 
half as long as broad ; the pleopods alike, the first pair not 
covering any of the following; the uropods with the outer 
branch long and narrow, not arching over the narrow 
lanceolate telson. The animal is vermiform. 
Hisothistos, Haswell, 1884, has both antennze very 
short in both sexes with few-(8-6) jointed flagella; the 
first gnathopods not subchelate, smaller than the following 
limbs; the first five pleon-segments short but distinct ; 
the first pleopods covering the rest; the uropods with 
outer branch narrow, not arching over the broad quadrate 
