126 MR. G. W. SMITH ANB DR. E. H. J, SCHUSTER OK 



Eng^us fultoni, sp. n. 



This species agrees with E. cunicidarius in all its characters, 

 save that the exopodite of the third maxillipede, instead of being 

 large and normally developed, is reduced to a small papilla as in 

 E. phyllocercus. The teeth in the pincer of the chela are not 

 fused to form a compound tooth, but there are several, about 

 three, small teeth on the lower jaw of the pincer and two on 

 the upper. The lower boi-der of the propodite of the chela has a 

 distinct serrated keel. 



Localities : — 



1. Two specimens from Fern Tree Gully, Victoria, one being a 

 female measuring 53 mm., with both chelse large and equally 

 developed ; the other a small female measuring 35 mm., with the 

 left chela enlarged and the right slender. 



2. One male from Cape Otway Forest, Victoria (collected by 

 W. Fulton, 28. V. 07), with both chelfe similar, fairly stoutly built, 

 and markedly hairy. 



EXPLANATION OP THE PLATES. 



PXATE XII. 



Fig. 1. Semidiagrammatic cross-section of podobraiich of Astacopsis. al. = ala. 

 Only a few of the gill-filaments are shown. 



2. Terminal hook from gill-tilament on ala, taken from the podobranch of 



Astacopsis. 



3. Ends of hooked setse from podobranch of Astacopsis. 



4. Semidiagrammatic section of podobranch of chela in Faracharaps. 

 ■ 5. Terminal hook from gill-tilament of Faracharaps. 



6. End of hooked seta from podobranch of Farachceraps. 



Plate XIII. 



Fi"-. 7. Podobranch of great chela from ISngceus cunicidarizis. X4i. 

 8. Semidiagrammatic transverse section of do. X 12. a?. = ala. 

 f). Tips of hooked gill-filaments from ala of do. X 250. 

 10. Tips of hooked setse from podobranch of do. X 250. 



PlATE XIV. 



Fig. 11. EngcBUS fossor. From dorsal surface. X 1^. 



12. '„ „ Side view, with limbs removed. X 1^. 



Plate XV. 



Fig. 13. EngcBiisfossor. Sperm -receptacles on penultimate segment of thorax in 

 the female. X2A. 



14. ,, ,, Basal portion of right antenna from above. X6i. 



15. „ „ Scale of antenna. X 12. 



16. „ „ Left mandible from above. X6|^. 



17. „' „ Do. from below. 



Plate XVI. 



Fig. 18. Engeeus fossor. First maxilla (left) from above. Xe^. 



19. „ „ End of exopodite of first maxilla. X65. 



20. „ „ Second maxilla (left) from above. X65. 



21. ., „ Second maxillipede (left) from below. X 6i. 



