54 



ZOOLOGICAL RESULTS OF THE EUWENZOKI EXPEDITION. 



the general disposition of the grooves of the carapace, especially the obliteration of the 

 anterior branch of the cervical groove and the strong development of its posterior 

 branch (or transverse branchial groove), which constricts the branchial region. They 

 further agree with the larger of the Ruwenzori specimens in the fact that the lateral 

 projection of the carapace exceeds the major diameter of the orbit, in which respect 

 the character of the species is wrongly given by. Miss Rathbun in the monograph 

 referred to. The differences between the two forms may be summed up by saying that 



Text-fiff. 11. 



The larger of the two type-specimens (males) of " Thelphnsa depressa y&x. johnstoni," described b}' Miers from 

 Kilimanjaro. Some of the walking-legs have been reconstructed from those of the other specimeo. 

 Above is shown the larger chela of the same specimen from the outer side. Both figures are 

 natural size. 



the ridges and granules of the carapace and chelipeds are much sharper and better 

 defined in the Kilimanjaro types, although the latter are larger than the largest and 

 smoothest of the Ruwenzori specimens. 



In the types, the postfroutal crest is sharp and more or less distinctly granulated ; 

 the antero-lateral marginal line is well-marked and its granules large and distinct ; 

 the raised marghr of the front and orbits is more sharply defined and in the orbits is 



