a 
F Rie ys 
4 wesc 
’ { etre 
£ 7 3 as 
4 he 
oi + gh 
4 ie 
uk 
M : 
spines on caudal peduncle. Dorsal spine inserted over 
or close behind eye edge, fully asperous, and with row of 
decurved strong spines along each hind e@ge, Color in alco- 
hol dull brownish, mostly uniform, or with few darker or neb-e 
ulous areas. Yften several ill-defined dark blotches along 
bases of soft dorsal and anal. Length 59 to 86 mm, Rio 
Janeiro, Two examples, 
eo 
Monacanthus ayraudi (Quoy and Gaimard)., 7 «4 
ry Po Be ee 
Head 3 1/2; depth 2 5/6; D.II - 32; A. 32; , 12? 
snout 1 1/4 in head; eye 2 2/3; interorbital 3 1/3; head width 
21/4. Snout profile slightly convex, Gill-opening below 
last half of eye; 11/3 in eye/ Dorsal spine inserted over 
hind eye edge, 1 1/3 in snout. Row of strong antrorse spines 
along each side deflected downward and outward. Color in alco- 
hol with back brown, also head above. Belly and lower surface 
of head, also iris, whitish, Fins all pale brown/ Length 87 
mm, One from Sydney? ae sat 
Monacanthus BS le oh 86 Crd ather- ‘i. 
Head 3 9/10; depth 2 2/5; D. I - S38; A. 35; P. 1, 12% 
eye 4 in head; interorbital 3 1/5; head width 2, Upper pro- 
file of head concave from snout tip to spinous dorsal origin, 
will-opening behind and below hind eye edge, little longer than 
eye, Skin roughly asperous., Dorsal spine finely asperous, with 
row of small antrorse spines along each hind edge; fin origin 
over front half of eye. Color in alcohol dull uniform dresden- 
brown everywhere. Length 265 mm, Sydney. 
