362 
PACIFIC SCIENCE, Vol. XII, October, 1958 
arated by a distinct interval of striated cuticle, 
bearing two and one setae respectively. Inter- 
coxal area with a single pair of setae between 
III. In one specimen (Fig. 37) there was only 
one intercoxal seta, but coxa III of the left 
side bore a supernumerary seta in the postero- 
lateral corner which evidently represented the 
displaced intercoxal seta. Postcoxal area with 
only three pairs of ventral and submarginal 
setae. Anal anlage very well developed. A 
small but distinct Lassenia-otg&n can be seen 
laterally between coxae II and III in good 
specimens; it is seen to best advantage in 
somewhat rotated individuals (Fig. 34). In 
the specimen drawn, the pore had a diameter 
of slightly more than 1 /jl, and opened into a 
duct about 22 /jl long, the inner end of which 
was slightly swollen. This is unquestionably 
the homologue of the same organ in Lassenia 
( Johnstonianidae) in which it is better de- 
veloped. The function, if any, is unknown; 
it is not an apodeme. 
Base of gnathosoma with posterolateral 
margins converging to a rounded or truncate 
end posteriorly; devoid of setae, except for 
the minute spikelike supracoxal setae which 
are dorsal in position (Fig. 40). Protorostral 
setae smooth, inserted at the ends of a pair of 
characteristic tubular structures on the dorsal 
lobes of the velum. Deuto rostral setae totally 
absent, tritorostral setae peripectinate, situ- 
tr fe pa 
n n s v n 
I 1 5, 6 2 14 
II 14 113 
III 14 10 3 
Basifemur and telofemur of all legs fused. 
Patella I with solenidia at .28 and A5d, II and 
III with solenidia at .34 and 39d, respectively. 
Patella I and II each with a solenidion at .79 
and J7d, respectively. Tibia I with solenidia 
at .56 and .75 d, a vestigial seta at .90 pd; II 
with solenidia at .39 and .56. The solenidia of 
the tibia show no readily perceptible differ- 
ence in form. Tarsus I with Si at .47 to .52, a 
dorsal eupathid (e d ) at .65 to .7 id, and a 
ated at about the widest part of the rostrum. 
Palpi five- segmented, but trochanter reduced 
to an ovate plate on the dorsal surface of the 
palp (see Fig. 72, P. quadrisetd ) . The inner 
angle of the trochanter can be seen projecting 
beyond the anterior margin of the palp where 
at first it may appear to be a lobe on the femur 
(in Figure 40, the ventral portion of the left 
femur has been deleted to show the position 
of the trochanter) . Femur with a smooth seta 
on dorsal surface, quite variable in position. 
Patella without setae. Tibia with three smooth 
setae plus the deeply cleft odontus; no spe- 
cialized paradont. Tarsus reduced to a small 
cap on the anterior aspect of the tibia bearing 
only 7 setae (Fig. 35). These include the large 
apical L-shaped seta (possibly a modified 
eupathid?) plus 5 other normal setae of vary- 
ing lengths and thicknesses. In the center is 
a minute peglike solenidion scarcely discerni- 
ble even under oil immersion, plus one other 
seta of similar form. The palpi of this species 
are remarkable for the geniculate form, which 
considerably alters the normal morphological 
relationship of the palpi with the rostrum. 
The morphological dorsal line forms the lat- 
eral margin of the palp as seen in ventral or 
dorsal view. 
Chaetotaxy of legs approximately as shown 
in table (s = solenidia, e = eupathidia, f= fa- 
mulus, v = vestigial setae, c = companion se- 
tae, n = normal setae). 
ti ta 
s v n sefnc 
2 15 1 2 1 17 0 
2 0 5 1 0 1 14 0 
005 000 13 0 
famulus at .45^ to .58 d. Tarsus II with S 2 at 
.47 to .5 4pd and f 2 at .45— .55 ; III with no 
specialized setae. Other chaetotactic features 
as shown in table. Tarsi I and II with three 
claws each, the median claw more slender than 
the anterior and posterior claws; III with 
posterior claw reduced to a minute vestige 
about 4 /d in length as in the case of P. 
quadriseta n. sp. (Fig. 74). 
type locality: Sherwood Creek, Mason 
