182 E. A. ANDREWS, 
beak edges; also hanging out from these concave surfaces, just 
within the rims, are the brushes of setae made up in’ section of 
some ten or so rows of sharp pointed setae and of two or so 
outermost rows of very heavy blunt setae. In the figure the 
upper part represents the distal part of the claw and shows on 
the side some part of one the brushes of setae so prominent on the 
claw, as seen in surface view in the upper part of Fig. A. These 
lateral setae are much like the pointed setae within the mouth of 
the claw. but are longer and not set as close nor arranged as to 
lengths to make so specialized a brush. 
These specialized brushes along the 
edges of the gape of the claw form 
continuous lines, running up the right, 
around the tip, and down the left of 
each part of the claw, but the U 
shaped line thus formed fades out 
unequally right and left in the back 
part of the „mouth“ of the celaw. 
As this highly developed cleansing 
instrument is found only in the female, 
at least in perfect expression, it seems 
probably of use in the female acts of 
cleansing preparatory to attachment 
of the eggs. That in these acts the 
sperm may also be set free to meet 
the eggs, by the same efforts to re- 
move all foreign substances, including 
the sperm containing masses, seems a safe predietion awaiting 
actual observation; the more so as any other mode of liberating 
the sperm from the dense layer of one or two millimeters of rubber- 
like material that covers them, is difficult to imagine. 
In Paribacus antareticus (Lux), which is there known to the 
fishermen as the „sea cockroach“, the female may bear large sper- 
matophore masses but these are not quite as evident as in the above 
Panulirus since they are less spread out and lie in a less conspicuous 
position. As indicated in Fig. 2 there may be a long dark mass 
forming a ridge across the ventral side of the female in the con- 
striction between the abdomen and thorax, just posterior to the last 
legs. This mass is plainly divided by a suture into right and left 
halves. Each half is a long narrow dark shark-colored, or black, 
