64 Proceedings of the Royal Society of Victoria. 



Dimensions. 



From point of rostrum to end of telson - 21-4 mm. 



Length of cephalothorax - - - - 8 '4 



Length of abdomen ----- 13-0 



Length of anterior legs - - . - \1-0 



Breadth of cephalothorax - - - - 4*0 



Breadth of abdomen . - - . 4-0 



DESCRIPTION OF PLATE Y. 



Fig. L — Platydromia thomsoni, sp. nov., adult male <?, x 25. 



,, 2. — The same, ?, sternum, showing sulci, x 2. 



„ 3. — The same, ?, cephalic region, x 2. 



„ 4. — The same, anterior view of frontal region, showing 



form of frontal lobes, and false frontal ridge, x 2 '5. 



,, 5. — Upogebia simsoni, Thomson, adult 3", x 1"8. 



,, 6. — The same, side view of chelipede, x I'S. 



,, 7. — Axius plectrorhynchus, Strahl, adult c?, x 2-3. 



,, 8. — The same, side view of chelipede, x 2 '3. 



