LEPTONEREIS VAILLANTI. 



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It tapers posteriorly, and ends in two bluntly conical processes closely applied to each 

 other, and two slender subulate cirri above them. The aims is in front and dorsal to 

 these processes. Mounted as a transparent object, rows of glands cross the dorsum 

 of each segment between the feet. Colour, pale rose with darker touches. 



The proboscis (Fig. 64) has well-developed maxillae with about twelve or fourteen 

 teeth, and two canals pass from the hollow base forward to the tip. These De St. Joseph 

 considers to be poison-canals. The roseate stomach has two lateral pouches which, after 

 Eisig, De St. Joseph considers to be air-chambers. 



The first two feet have only the dorsal cirrus which is of a slightly bent fusiform 

 shape, a pointed lamella beneath in the superior division which is devoid of spine and 

 bristles, whereas all the other feet have this division complete, viz., dorsal cirrus, upper 

 lamella, rounded setigerous lobe with a black spine, and homogomph bristles (Plate 

 LXXXVI, fig. 9) and a second lamella. 



Fig. 64. — Head and anterior region of Leptonereis Vaillanti, from a preparation forwarded by Major Elwes. 



The inferior division has a double setigerous region of a triangular shape, the one 

 covering the other, with two groups of bristles and a powerful black spine. In the upper 

 group are homogomph with some falcate heterogomph ; the lower group is composed of 

 homogomph and a large number of heterogomph falcate bristles (Plate LXXXVI, fig. 9 a). 

 De St. Joseph states that the bristles are identical in structure with those figured by 

 Claparede 1 in Leptonereis glauca. Beneath the foregoing is an inferior lamella and a 

 small ventral cirrus. The feet vary in the several regions ; thus the first four are small 

 and have a large dorsal cirrus which projects beyond the upper lamella, whereas at the 

 fifth the cirrus is of the same length. Then the lamellae become prominent, and continue 

 so to the posterior end, where, for ten segments, the cirrus again extends beyond it. 

 After the tenth or twelfth three greyish glands occur on the dorsum of each foot, and they 

 are conspicuous in the posterior segments (De St. Joseph). 



De St. Joseph found both male and female heteronereids between June and October, 

 yet he did not secure a male in the nereicl condition. The female heteronereid resembles 



1 ' Annel. Nap./ Supply pi. vif, fig. 3 b. 



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