Spermatophores in Panulirus and Paribacus. 185 
and crowded and most of them are combs or rasps, though near 
the outer edge there are a few larger smooth spines in some sections, 
as represented in Fig. D. 
In Paribacus as in Panulirus the male seems fitted to deposit 
the above spermatophore masses since the openings of the deferent 
ducts on the bases of the fifth legs are very large. T'he are, however, 
not as complex as in Panulirus which is in harmony with the less 
complex and extensive structure of the sperm-bearing masses. Each 
opening is an elliptical area some 10 mm. long in a male 10 cm. 
thoracie width, filled with a turgid membrane that holds it closed 
Fig. E. Fig. D. 
but may be drawn one side to reveal a large passage on the median 
face, being thus much like the opening of the oviduct in Cambarus. 
Applying a male to a female it is seen that the free moving, 
bases of the fifth legs might readily bring spermatophore material 
from these openings to the region of the female between the thorax 
and the abdomen and that if the male moved from side to side the 
spermatophore might be spread out as we find it. The clawless 
legs of the male hold very tightly to the wires of cages and when 
the male is applied to the female even in the air these legtips 
