Johnstonianidae — Newell 
437 
famulus at 0.45 to 0.52 d, these setae of the 
same form as the corresponding ones in the 
larva. Tarsus II apparently lacking Si, the re- 
maining solenidia being s 4 (Fig. 128). All 
tarsi with a distinct claw fossa on dorsal sur- 
face, and most segments of legs with excep- 
tion of trochanter and basifemur bearing 
many angular dorsal protuberances which 
give the legs a rough appearance. Two claws 
on all tarsi, the claws flattened and with a 
median ventral carina. 
MALE: Similar to female in most respects 
observed, with the principal exception of the 
genital opening (Fig. 112). Genital opening 
guarded by two pairs of sclerites as in female, 
but these have many more setae. Anterior 0.4 
of each genital sclerite with 45 to 50 close- 
packed smooth, long, slender setae; remain- 
ing 0.6 with only about 20. Paragenital scler- 
ites each with about 40 to 45 smooth setae, 
6 or 8 of which are appreciably heavier than 
the others. Penis not triangular, but small and 
tubular. Three pairs of prominent genital 
acetubula. Anal sclerites with 14 to 17 smooth, 
slender setae. 
larva: Body 343 to 389 m long, 233 to 279 
ji wide, length/width = 1.36-1.57; average 
369 by 253 ju> length/width = 1.46 (five 
specimens). Scutum (Fig. 129) with a knob- 
like protuberance anteriorly, and a pair of very 
small sensilla inserted near the base of this. 
The knob bears a short, blunt point ventrally, 
but this is not visible in dorsal view. These 
setae, while not especially sensillar in form, 
are forerunners of the anterior sensilla in the 
adult. Setae at anterolateral and posterolateral 
angles bihemipectinate. Posterior sensilla very 
long, slender, smooth. Crista metopica well 
developed in anterior one-half (sometimes in 
posterior one-third also) of scutum. A patch 
of moderately coarse pores (250 x) near pos- 
terior margin; surface otherwise marked with 
numerous fine punctae and an irregular retic- 
ulum medially behind the sensilla. These 
pores and reticulae are also evident in the 
adult (Fig. 110). Corneae two on each side, 
borne on a common ocular plate. Dorsal setae 
36 in number, borne in five transverse rows 
(8, 8, 8, 8, 4; Fig. 131). Each seta faintly 
hemipectinate (250 x), borne on an individual 
sclerite, the central portion of which is mod- 
erately elevated (Fig. 130). Membranous cuti- 
cle with parallel striae, which are sometimes 
indistinct. 
Coxa I (Fig. 144) with two bifurcate setae; 
medial portion of coxa caudiform, indistinct. 
Supracoxal seta absent. Coxa II with one bi- 
pectinate seta laterally; coxa III with one 
smooth seta. Intercoxal area (Fig. 138) with 
only one pair of setae between coxae III; 
postcoxal area with 36 to 38 hemipectinate 
ventral and marginal setae on each side, all 
borne on individual sclerites. Presumptive 
anal opening distinct. 
Gnathosoma with a single pair of bifurcate 
setae ventrally, presumably the tritorostrals. 
Rostrum very short; protorostral setae smooth. 
Velum small. Podocephalic canals well de- 
veloped. Supracoxal setae absent. Cheliceral 
base very thick; digitus fixus membranous 
(Fig. 134); digitus mobilis smooth, except for 
one tooth. The ventral margin of the digitus 
mobilis in the specimen drawn was bent, but 
this may not be normal. Palpi five-segmented 
(Fig. 133). Trochanter lacking setae, femur 
and patella each with one long, smooth dorsal 
seta. Tibia with three smooth setae and a 
hooked terminal spiniform seta which usually 
appears unidentate in lateral view, but bifid 
in ventral view. Palpal tarsus (Figs. 132, 136) 
with solenidion basally on lateral surface. Tip 
of tarsus drawn out into a flat, sharp spine; 
a faintly pectinate seta arising dorsally at the 
base of the spine gives the tarsus a bifid ap- 
pearance. Otherwise with six setae, all but 
two of which are faintly hemipectinate. No 
typical eupathidiform setae present, although 
the heavy pectinate setae are quite certainly 
the forerunners of these. 
Chaetotaxy of legs approximately as shown 
in table (s = solenidia, e = eupathidia, f = 
famulus, n = normal setae). 
Trochanters I to III each with one large 
ventrally curved seta. Basifemora all distinctly 
