180 "ENDEAVOUR" SCIENTIFIC RESULTS. 



These differ from the type in the colour of the elytra, which 

 are uniform pale pinkish brown. They lack the " four 

 darker longitudinal belts " which, being continuous with 

 those of the other elytra, give the striping which M'Intosh 

 regarded as characteristic of the species. 



I find also that there are 24 pairs of elytra in both the 

 entire individuals, instead of " about 23 pairs " recorded by 

 M'Intosh. They are on the parapodial segments 1, 3, 4, 6, 

 8, etc., up to 42, 44 and on 45. This last scale, then, is in an 

 unusual position, being on a consecutive instead of on an 

 alternate segment. 



There are seven postelytral cirriferous segments, giving in 

 all 52. M'Intosh's largest specimen measured only 45 mm. 

 in length by 10 mm. " total breadth," and his drawing shows 

 48 parapodia on each side. 



It is possible, then, that they were not fully grown. It is 

 not unlikely, it seems to me, that in these species with 

 longish bodies the number of segments and even of the elytra 

 may increase with age. Thus Potts records that specimens 

 measuring 30 and 33 mm. had 19 or 22 pairs of elytra 

 respectively. 



In all other respects my specimens agree with M'Intosh's, 

 especially in the unique structure of the dorsal cirrus, which 

 is flattened from side to side, so as to be band-like. This is 

 of more weight than any trifling difference in size or colour. 



I may add one or two notes in extension of the former 

 accounts. The parapodium is practically uniramous, for the 

 notopodium is represented by a very small lobe on the 

 anterior of the upper surface containing an aciculum and 

 some two or three very small chaetse such as M'Intosh figures 

 and which recall those of L. simplicipes, Haswell. 



The neuropodial lobe carries a large number of stout 

 chsetiB in two groups a supra- and a sub-acicular group 

 which are distinctly separate when seen from the side of the 

 animal. But all are alike in structure, the supra-acicular 

 group consists of 4-5 horizontal rows, with 2-3 in a row, 

 giving a total of about 14-15 chsetse in a middle foot. 



The sub-acicular group are in 8-9 tiers, of three in the upper 

 and lower tiers and five in the middle ones, a total of 38-40. 

 These chaetae are bifid, with 20 pectinated frills, and agree 

 precisely with M'Intosh's figure. 



Iocs. Off Babel hland, Bass Strait, 50-80 fathoms. 

 Off Gabo Island, Victoria, 200 fathoms. 



