. Text-fig. 55. A, Muggiaea kochii, off Plymouth; B, M. delsmani , Java Sea; C, Lensia leloupi , ' Discovery' St. 277; D, Lensia subtiloides, Great Barrier Reef. A, C x 16; B X20; D x 18. hydroecium. But Lensia subtiloides and L. leloupi agree in (1) showing a notch on the edge of the left mouth-plate ('right' if viewed from the dorsal side, apex uppermost); (2) the origin of the somatocyst from a point on the hydroecial roof to the left of the highest point, and not nearly so close to the nectosac as in Muggiaea spp.; (3) the tip of the nectosac being so near to the apex of the nect
. Text-fig. 55. A, Muggiaea kochii, off Plymouth; B, M. delsmani , Java Sea; C, Lensia leloupi , ' Discovery' St. 277; D, Lensia subtiloides, Great Barrier Reef. A, C x 16; B X20; D x 18. hydroecium. But Lensia subtiloides and L. leloupi agree in (1) showing a notch on the edge of the left mouth-plate ('right' if viewed from the dorsal side, apex uppermost); (2) the origin of the somatocyst from a point on the hydroecial roof to the left of the highest point, and not nearly so close to the nectosac as in Muggiaea spp.; (3) the tip of the nectosac being so near to the apex of the nectophore. This third character is found in M. bargmannae but not in the other three Muggiaea species. The type specimens of this new species Lensia leloupi were taken at ' Discovery' Station 277 near Cape Lopez in the Gulf of Guinea, and not far from the mouth of the Ogowe river. No salinities are recorded from this station, but at Station 279, closer still inshore, the salinity was 33-08 %0 at the surface, a comparatively low salinity for Siphonophores to tolerate. The figured holotype bears the Brit. Mus. (Nat. Hist.) Register No. 1952. 11. 19. 1. Lensia multicristata (Moser), 1925. This species was recorded by Browne from Chagos and Amirante under the name Diphyes bigelowi. New Indian Ocean records: specimens of Lensia multicristata have been identified from the following 'Discovery II' Stations in the Indian Ocean: 847 (270-196 m.); 1743 (2100-1150 m.); 1566 (1350- 1 Named for Dr E. Leloup. D XXVII 15
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