574 ON A NEW CRUSTACEAN. 



drought -resisting eggs. Unfortuately, newly hatched larvae 

 have not yet been captured, so that we are unable to figure this 

 stage. 



The species of Pcdcumonetes known at present differ but slightly 

 from one another, and the chai'acters of most importance 

 systematically which mai-k the Australian species are (a) rostrum, 

 (b) rami of antennvde, (c) length of perseopods and their 

 segments, {d) telson. 



EXPLANATION OF THE PLATE. 



I'alcBmonetes australis. 



Fig. 1, Rostrum (form with seven dorsal spines). X 9. 



2. Outer antennular tiagellum (basal portion). 



3. Atttenijal scale and base of autepna. X 8. 



4. Mandible. X 20. 



5. First maxilla. X 12. 



6. Second maxilla. X 12. 



7-9, First, second, and third maxilHpedes. X 12. 

 10. Second pera;opod. X 7. 

 11-13. Third, fourth, and fifth perKopods, X 3. 

 14. Telson, X 12, 



