AET. 18 SYNOPSIS OF CALANOID CRUSTACEA MAESH 47 



In the fifth foot (pi. 22, fig. 2) the terminal segment has a stout 

 serrate hook at the inner angle, a slender spine at the outer angle, 

 and a third shorter median spine. 



Length, 1.15 mm. 



Male. — The endopod of the right foot (pi. 22, fig. 3) is a dentate 

 plate extending about one-half of the length of the first segment 

 of the exopod. The first segment of the exopod has at its distal 

 angles spinelike processes. The second segment of the exopod has a 

 long, slender spine at its outer distal angle. The terminal hook is 

 falciform, with a tumid base on which are two small spines. The 

 left foot has, on the second segment of the basipod, a long slender 

 sigmoid appendage, the endopod ; this has short hairs on both inner 

 and outer sides. Both segments of the exopod have elongated 

 hooks ; the second segment has, besides, a border of long hairs on the 

 inner side of the base of the hook. 



Length, 1.15 mm. 



Occurrence. — Found in salt and brackish water in Gulf of Guinea, 

 lied Sea, India, and Cape Colony. 



SCHMACKERIA SMITHI Wright 



Plate 23, Figubes 3, 4 

 ScJimackeria smithi Weight, 1928, pp. 592-597, pi, 12, figs. 1-3, 5-8. 



Female. — The head and first thoracic segment are fused. There 

 is a small spine on each side of the head. The sides of the last thor- 

 acic segment are rounded ; there is a strong spine on the dorsal sur- 

 face of the last thoracic segment on each side. The abdomen has 

 four segments. Segments 1 to 3 have spines on the distal bor- 

 ders. The first segment has a rather prominent spine on each side. 

 The antennae have 22 segments and extend to the second abdomi- 

 nal segment. The furcal rami are asymmetrical, and ciliate on the 

 inner borders ; the third seta is broader than the others. The second 

 basal segment of the fifth foot (pi. 23, fig. 4) is ajjproximately 

 square, its inner and outer borders being convex. The first seg- 

 ment of the exopod has a spine near the outer distal angle and a 

 hyaline lamella on the inner angle. The second segment of the 

 exopod has a small external spine at the distal end, a stout, curved 

 internal spine. The terminal hook is slightly curved and has a hook- 

 shaped brancii from the inner side of the base. 



Length, 1.16 mm. 



Male. — In the right fifth foot (pi. 23, fig. 3) a triangular proc- 

 ess, the endopod, projects from the second basal segment. The first 

 segment of the exopod is extended in a curved process which is den- 

 tate on the outer margin. The second segment of the exopod is 



