184 '' ENDEAVOUR SCIENTIFIC RESULTS. 



The median tentacle is broken, the laterals are relatively 

 short, and, excluding the base, each is equal to the length of the 

 prostomium ; there is apparently no sub-terminal swelling, 

 though as the animal is soft, it may be present in life ; they 

 are smooth and colourless. The palps are pale brown with 

 a white tip. 



The dorsal cirri have a subterminal swelling, though 

 feebly developed, and the pigmented ring below it no doubt 

 adds to the effect. The parapodium (PI. xxxviii., fig. 12) 

 consists of a small notopodium only slightly prominent, and 

 a large neuropodium whose lower margin slopes upwards to 

 meet the upper at a blunt point, at which is the short acicular 

 ligule. The notopodial chsetse are of two kinds, which differ 

 only slightly from one another. The upper (a) are about 12 

 in number, shorter than the second kind, but of unequal 

 lengths ; they are arranged in a semicircle above the bases 

 of these. Each terminates in a blunt smooth apex, at a 

 little distance from which the usual frills commence (PI. 

 xxxviii., fig. 13). The second kind (b) are about 7 in number, 

 longer, but of the same diameter ; the tip, however, is 

 extremely fine, and appears to be flexible ; the frills are 

 continued to the apex (PL xxxviii., fig. 14). 



The neuropodial chsetae are 24 in number, with a sub- 

 apical tooth, and about five frills, of which the uppermost 

 has stouter denticulations than the rest (PI. xxxviii., figs. 

 15, 15a) 



Remarks. Willey described a species from Ceylon under 

 the name L. carinulatus, Grube, and Potts identifies one 

 from the Indian Ocean under the same name. And at first 

 I supposed that I had a specimen of Grube's species before 

 me, as it agrees very closely with the account given by these 

 two zoologists. 



The chief reason for disagreeing with Willey s determination 

 of his species is the presence of a sub-apical tooth on the 

 chsetse, for Grube makes no mention of it, either in his 

 original diagnosis of the species, to which neither of the above 

 authors refer, nor in his second account of specimens from 

 the Philippines. 



Indeed, the original account 1 contains the following 

 description of the chsetse " inferiores fere 24-nae, apice 

 graciliori simplici sub eo vix dilatatse, dentibus 4 serratse, 

 extreme majore." 



1. Grube -Annelid en des rothen Meeres (Ehrenberg gesammelt). 

 Monatsber. Kgl. Akad. Wiss. Berlin, 1869, p. 7. 



