1922.] S. Kemp : Notes on Crustacea Decapoda. 215 



Periclimenes (Ancylocaris) elcgans (Paulson). 



1875. Anchistia elegans, Paulson, Crust. Red Sea, p. 113, pi. xvii, figs. 



I, la-h. 

 1906. Anchistia elegans, Nobili, Ann. Sci. nat., Zool. (9) IV, p. 52. 



The rostrum (text-fig. 60) is rather deep, especially in females, 

 and reaches to or a little beyond the end of the antennal scale. 

 It is straight at the base, but in its distal half is directed upwards. 



Text-fig. 60. — Periclimenes elegans (Paulson). 

 Anterior part of carapace, rostrum, etc. 



On the concave upper border there are from 6 to 8 teeth, 1 nearly 

 always 7 or 8. The teeth are arranged much as in P. grandis, but 

 the distinction into two groups is sometimes even more clearly 

 marked than in that 

 species. On the lower 

 border there are from 

 3 to 5 teeth, 8 nearly 

 always 3 or 4. 



In the spines of the 

 carapace and the eyes 

 the species resembles 

 P. grandis. A single 

 band of dark pigment 

 is frequently seen on 

 the cornea. 



The antennules also 

 resemble those of P. 

 grandis, but the termi- 

 nal spine of the basal 

 segment is rather 

 longer, reaching almost 

 or quite to the middle 

 of the second segment, 

 and the margin bet- 

 ween this spine and 



a/. 



TEXT-FIG 6l. — Periclimenes elegans (Paulson) 



a. Part of antennular peduncle. 



b. Antennal scale. 



1 Of fifty specimens two have 6 dorsal teeth, thirty-six have 7 and twelve 

 have 8. 



2 Of fifty specimens thirty-one have 3 ventral te°th, eighteen have 4 and 

 one has 5. 



