RED SEA AND INDIAN OCEAN COPEPODA. 411 



Stenhelia erythrcea, n. sp. Plate III., figs. 11-14. 

 Occurrence, Nos. 4, 5. 



Description of the Female — Length '79 mm. Body 

 elongate, slender ; rostrum prominent and curved. 

 Abdomen without any ornamentation. The antennules 

 are moderately long and slender, eight- jointed ; the fifth 

 and sixth joints are shorter than any of the others. The 

 formula shows the proportional lengths of the joints. 



Proportional lengths of the joints - 12 12 8 8 3 2 4 7 

 Number of the joints - - - 1 2 3 4 5 6 7 8 



The antennae, mandibles, maxillae, and foot jaws are 

 similar to those of S. irrasa. The first four pairs of 

 swimming feet are somewhat like those of S. ima. The 

 fifth pair of feet are larger than those of S. irrasa, and 

 more elongated. The inner branches are furnished with 

 four plumose setae on the inner distal margin and two on 

 the apex. The outer branches have four plumose setae 

 on the outer distal margin, one on the apex, and one on 

 the inner margin near the apex (fig. 14). Caudal furca 

 very short. 



Remarks. — This species is distinguished from S. irrasa 

 by the structure of the antennules, and by the form of the 

 fifth pair of feet. 



Delavalia inopinata, n. sp. Plate III., figs. 19-22. 

 Occurrence, Nos. 1, 4, 12, 19. 



Description of the Female — Length "63 mm. In general 

 appearance somewhat similar to D. palustris, Brady. The 

 antennules are eight-jointed, and resemble those of 

 D. aimula, T. Scott. The formula shows their proportional 

 lengths. 



Proportional lengths of the joints -65543434 

 Number of the joints - - -12 345678 



The antenna), mandibles, maxilla), and foot jaws are 



