$22 PROCEEDINGS OF THE NATIONAL MUSEUM VOU. 92 
As Marenzeller’s description was based on a specimen 120 mm. 
long, with 240 segments, it may have been almost, or quite, complete 
and mature. The prostomium was described as considerably pointed, 
large, longer than broad, as long as, or longer than, the first three 
segments. Parapodia differed in the various body region, as follows: 
“An den vorderen Rudern ist die Hinterlippe von vorne nach 
rickwirts zusammengedriickt, von oben gesehen schmal, am Ende 
etwas angeschwollen, die Vorderlippe kurz, fast gar nich vorspring- 
end [fig. 10, e, based on specimen in U.S.N.M.] Allmalig wird die 
Hinterlippe dicker [in antero-posterior axis] aber etwas kirzer, und 
indem auch die Vorderlippe sich mehr entwickelt, wird die Differenz 
in der Liinge zwischen beiden verringert; erstere tiberrage jedoch 
diese stats [fig. 10, f]. Die Ubergiinge bilden sich bis etwa zum 40. 
Ruder heraus; von hier ab bleibt diese Form bis weit nach hinten. 
Die Hinterlippe [fig. 10, g] zeigt sich von oben als ein relativ langer 
fingerformiger, nach hinten gerichteter Fortsatz, der etwa die Hilfte 
der Linge, vom Ursprunge des Ruders bis zum Vorderrand der nur 
wenig vorspringenden Vorderlippe gemessen, ausmacht.” This transi- 
tion of parapodial lobes from anterior to posterior regions prompted 
the specific name heteropoda. Furthermore, the first 35 segments 
were said to be provided with only pointed setae, numbering first 13 
in a parapodium, decreasing to 8 in the thirty-fifth: Hooded hooks 
were present from the thirty-sixth segment, accompanied with pointed 
setae, the latter continued in diminishing numbers to the end (at 
least through 200 segments). 
Crossland (1924, p. 4) united Z. heteropoda with L. erecta Moore 
(above) seemingly because of a misinterpretation of Marenzeller’s 
description, based on collections from the Red Sea, Zanzibar, and 
Kenya Colony, but none from Japan or California. They are here 
believed to be distinct from each other, and perhaps each different 
from the Indo-Pacific specimens. Crossland concluded that Maren- 
zeller did not see posterior segments in his specimen, yet Marenzeller 
states that he had a 240-segmented individual, and one that “gegen 
das Leibesende sich allmilig verjiingend.” Crossland interpreted 
this as a regenerated specimen; it might be interpreted as one that 
was nearly complete, tapering posteriorly. Marenzeller stressed the 
marked difference in parapodial lobes of anterior, median and poste- 
rior segments, as described above. 
In both Z. erecta and L. heteropoda anterior parapodia lack hooded 
hooks, in the first through 40 to 44 segments, in the second through 
about 36 segments; both have pointed setae, though in diminishing 
number posteriorly throughout the body length; both have similar 
maxillary parts but the maxillary carriers are proportionately shorter 
and broader in Z. erecta than in L. heteropoda. In L. erecta, middle 
