TEMORA. 53 



are fringed with small spines or spine-like hairs. There 

 is, however, considerable variety in the conformation 

 of these organs. The fifth foot in the female (fig. 12) 

 is small, three-jointed, the basal joint stout and bear- 

 ing a single long seta, the next very small, and the 

 terminal joint forming a long and slender curved claw. 

 Abdomen very short, the first segment, in the female, 

 being much the largest; caudal segments also short, 

 about twice as long as broad : tail-seta3 rather longer 

 than the abdomen. Length 2 ^th of an inch (1*3 

 mm.). Colour yellowish, whitish, or pellucid. Dias 

 tongiremis is found abundantly in the open sea and 

 between tide marks all round the British islands ; it 

 occurs sometimes also in brackish water, but in that 

 case is usually small and poorly developed. 



Genus 6. TEMOEA, Baird (1850). 



(Cyclops (in part), Miiller. Calanus (in part), Leach (fide Boeck), not 

 Monoculus, Gunner.) 



Body elongated ; head distinct from the thoracic 

 segments; rostrum bifurcate. Fourth and fifth thoracic 

 segments either completely coalescent or their separa- 

 tion merely indicated by a furrow. Abdomen com- 

 posed of four segments in the male, of three in 

 the female. Anterior antennse twenty-four- or 

 twenty-five-jointed; that of the right side in the 

 male having a hinge- joint and forming a prehensile 

 organ. Mouth organs as in Calanus. Inner 



