378 
PACIFIC SCIENCE, VoL VII, July, 1953 
dally and middorsally; integumentary sculp- 
turing indistinct except caudally. Labrum 
short, 0.25 of width at 1-C, anterior margin 
moderately emarginate. Mental plate large, 
acute; with 21 distinct teeth. Hairs of head 
capsule weakly pigmented except for 4, 6-C, 
all inconspicuous; 5, 6-C slender, not spike- 
like; relative position, length, and degree of 
development as figured. Hair 0(1, short, leaf- 
like) ,1(1, very short, stubby, bluntly pointed) , 
3(1, very short, inconspicuous), 4(1, darkly 
pigmented), 5(1), 6(2, 3b), 7(1), 8(1), 9(3b), 
10(1), ll(2b), 12(1), 13(2b), 14(1, slender, 
simple), 15(1). Antenna 0.25 of head; uniform 
in width, curved with concavity lateral; width 
at middle 0.16 of length; uniformly moderate- 
ly pigmented, darker at base; shaft without 
spicules. Antennal hairs moderately pigment- 
ed except 1, 2-A; relative position, length, and. 
degree of development as figured; all single; 
1-A placed at 0.88 from base, length about 
1.4 width of antenna. 
Thorax: Long hairs and tubercles strongly 
pigmented; short hairs lightly pigmented; rel- 
ative position, length, and degree of devel- 
opment as figured; apices of long hairs 
attenuated; long hairs with inconspicuous 
barbs or spicules; hair 5-P about 0.6 of head 
length. Pro thorax: hair 0(3b), 1(1), 2(1), 
3(2b), 4(3b), 5(1), 6(1), 7(2, 4b), 8(3, 4b), 
9(1, 2b), 10-12(1), 14(1). Mesothorax: hair 
l(3b), 2, 3(1), 4(3b), 5-7(1), 8(3b), 9-12(1), 
13(3b), I4(4b). Metathorax: hair l(2b), 2(3b), 
3(2b), 4(1), 5(1), 6(1, 2f), 7(3, 5b), 8(3b), 
9-12(1), 13(4, 5b). 
Abdomen: Tubercles and long hairs very dark- 
ly pigmented, other hairs moderately to light- 
ly pigmented; relative position, length, and 
degree of development as figured; long hairs 
with moderate barbs. No true stellate hairs. 
Hairs 6-I-V with basal tubercles. Segment I: 
hair l(2b), 2(1), 3(3b), 4(2, 3b), 5(1), 6(2b), 
7(1), 9(1), 10(2, 3b), 11(3, 4b), 12, 13(1). 
Segment II: hair 0(1), l(3b), 2(1), 3(1, 2b), 
4(1), 5(2b), 6(2b), 7(1), 8(1), 9(2b), 10(1), 
11(2, 3f), 12(2b), 13(4b). Segment III: hair 
0(1), 1(2, 3b), 2, 3(1), 4(1, 2b), 5(2b), 6(3b), 
7(3b), 8(1), 9(3b), 10-12(1), 13(3b), 14(1). 
Segment IV: hair 0(1), 1(2, 3b), 2-4(1), 5 (2b), 
6(3b), 7(3, 4b), 8(1), 9(3b), 10-12(1), 13(3b), 
14(1). Segment V: hair 0(1), l(2b), 2(1), 
3(2b), 4(1, 2b), 5(1, 2b), 6(3, 6b), 7(3b), 8(1), 
9(2b), 10-12(1), 13(3b), 14(1). Segment VI: 
hair 0(1), l(2b), 2(1), 3(2b), 4(1), 5(2b), 
6(3b), 7(not seen), 8(1), 9(3b), 10(2b), 11, 
12(1), 13(3b), 14(1), Segment VII: hair 0(1), 
l(2b), 2(1), 3(3b), 4, 5(1), remaining hairs not 
visible. Segment VIII: comb plates united 
dorsally, strongly sclerotized, darkly pigment- 
ed, ornamented with strong imbrications from 
which minute spicules project; comb scales 
6-6, sharply pointed, without lateral fringe 
but a few basal spicules as figured; hair 0(1), 
l(2b), 2(1), 3(1, 2b), 4(2b), 5(2f, 4b), 14(1). 
Siphon: as figured; length slightly less than 
2.0 median width; strongly pigmented, im- 
brications much heavier than on comb plate, 
spicules not distinct; pecten extending to 
0.70, teeth 6-7, sharply pointed, heavily 
sclerotized and pigmented, without lateral 
fringe but with one or two short basal den- 
ticles; valves as figured, darker than siphon, 
all short; hair l(2b), 2(1, well developed), 
3-5 (only 2 setal rings visible), 6(1, well de- 
veloped, longer than valve), 7 (2b, minute), 
8 (2b, well developed, about 0.5 of valve), 
9(1, slender, hook-like, inconspicuous), 10(1, 
minute), 11, 12(1, in a conspicuous alveolus), 
13(1, simple hair, short). Segment X: saddle j 
very short, lightly pigmented; median width j 
about 2.0 of length; imbrications faint except | 
caudally where two or three rows of short, ; 
darkly pigmented spicules arise from their | 
apices but do not project from caudal margin ^ ! 
of saddle; gills extremely long, sausage- 
shaped, 3.0 of saddle length; hair 1(2, 3b, j 
minutely spiculate, about as long as saddle), ; 
2 and 3 arise from large common tubercle, | 
2(1, about 3.9 of saddle length), 3(1, about j 
4.5 of saddle length), 4a(l, about 3.5 of sad- 
dle length), 4b(l, about 4.0 of saddle length), |l 
4c(l, about 3.5 of saddle length), 4d(l, about I 
2.75 of saddle length), 4e(l, about 0.5 of j 
saddle length). j 
