254 Annals of the South African Museum. 



EUDROMIA BITUBERCULATUS, 11. Sp. 



Plate CIII. 



Behind the two very prominent, broadly rounded, and widely 

 separated lobes of the front the carapace has a pair of large, nearly 

 erect tubercles a conspicuous feature to Avhich the specific name 

 refers. To the rear of the frontal lobes the margins of the carapace 

 diverge strongly, overlapping the orbits and running out into a 

 conspicuously extended tooth on either side by which the width of 

 the carapace is made to exceed its length, even including the frontal 

 lobes. Further back are two pairs of small teeth, and then the 

 postero-lateral margins bend back beyond the broad and straight 

 hind margin. The pleon of the female is trilobed, closely fringed 

 Avith setae, and on most of the segments having the hind margin 

 furnished with a central and two lateral pads of setules. 



The eyes have a short tumid stalk and a small, pale cornea, almost 

 or quite concealed by the carapace above. In the antennae the first 

 joint of the first pair is the largest and the second joint of the second 

 pair. The palp of the mandible appears to be very small. The palp 

 of the first maxilla is very elongate. In the second maxillae the lowest 

 lobe is large, all the others very slender. The fourth joint of the 

 second maxilliped is broad proximally, narrowing distally. In the 

 third pair the fourth joint is longer than the third the reverse of 

 the relation which Henderson found in E. frontalis. In the present 

 species the second joint seen from the outer (lower) side seems to be 

 in coalescence with the third, but is quite distinct on the inner (upper) 

 side. On the whole the antennae and mouth-organs show strong 

 agreement with those of Cryptodromia. 



The chelipeds have broad tips to the fingers and interlacing denticles 

 on the confronting margins, the wrist nodulous, and the preceding 

 joint denticulately cristate. The second and third peraeopods are 

 alike and nodulous. The fourth pair are much smaller, with the hand 

 well defined though very slight, and carrying a well-formed nail. The 

 same is the case with diminished hand in the fifth pair. 



The pleopod on the sixth segment of the pleou is very small, in 

 striking contrast to those on preceding segments. 



The carapace measured 13 mm. from the advanced median point in 

 the central line, or 15 mm. from front to back laterally, the greatest 

 breadth being 16'5 mm. 



Locality. Eooiels River, S.W. by S. J S. 2 miles ; depth 18 fathoms 

 (False Bay). A 858. 



