Identity of Stylarioides inflata — HARTMAN 
sand grains. The first 2 setal fascicles are much 
the longest and strongest, and directed far 
forward to form a cephalic cage about the 
anterior end. The first neuropodial fascicle 
has about 12 long, slender, transversely 
barred setae; its notopodium is larger and 
more conspicuous. The second segment has 
shorter neuropodia and notopodia with setal 
fascicles similar to those in front but smaller. 
The third segment has more reduced setae 
than those in front; its notosetae number 6 to 
8 in a fascicle; the neurosetae number 5 or 6 
and, like those in front, are distally pointed. 
Thereafter, notosetae come to be inconspic- 
uous and number only 3 or 4 in a bundle; this 
order is continued to the end of the body. 
From the fourth segment, the neurosetae are 
transitional between pointed setae and fal- 
cigerous uncini. The distal end is falcate and 
slightly to considerably thickened at the 
shoulder (Fig. 2b). A weak fracture, suggest- 
ing the articulation of a composite uncinus, 
is visible with favorable illumination; such 
uncini are present in segments 4 to 6 (Fig. 
2a-c)\ in addition, an occasional transitional 
pointed seta can be found (Fig. 2d ) . From the 
seventh neuropodium, the typical simple 
hooks (Fig. 2f) are present and continued to 
the end of the body. They number 3 or 4 in 
a series or increase to 5 or 6 at segments 10 
to 25, where the body is thickest. They are 
arranged in a single fan-shaped fascicle and 
are accompanied by very slender, hair-like, 
barred setae, located immediately in front of 
the uncini and alternating regularly with 
them. 
The fifth segment has a pair of large 
nephridial apertures located just within the 
neurosetal fascicle and on the ventral side. 
Based on various collections examined, the 
total number of segments ranges from 52 to 
75; length of a larger specimen from southern 
California is 50 to 60 mm. (preserved). The 
73 
Fig. 2. Stylarioides inflata. a, Uncinus from fourth 
neuropodium, X842; b, uncinus from fifth neuro- 
podium, X842; c, uncinus from sixth neuropodium, 
X842; d, transitional uncinus from sixth neuropodium, 
X842; e, notopodial seta from a median parapodium, 
X482; /, neuropodial uncinus from a median para- 
podium, X482. 
body is thickest in the region of segments 20 
to 25 and tapers to a narrow caudal end. The 
epithelial surface of the body is nearly smooth 
except for single rows of papillar fringe at the 
anterior end of the segment; this fringe ex- 
tends around the body as a circlet and gradual- 
ly diminishes in the posterior two thirds so as 
to be hardly visible. 
The prostomium, to be seen only by dis- 
section into the anterior end, is a small lobe 
with a pair of very large, nearly converging, 
dark, lenticulated eyes (Fig. lb). The eyes are 
Fig. 1. Stylarioides inflata. a. Entire individual in right lateral view, X4; anterior end seen from the front, 
right palpus and all except 3 tentacles cut off near the base, showing left palpus in place, prostomium with large 
eyes and oral slit, X23.2; c, portions of a barred seta from the first segment: 1, near the base, 2, near the middle, 
3, towards the tip, and 4, at the tip, X162. 
