( *2 ) 



In the West Indies and neighbouring Atlantic coasts, from North Caro- 

 lina to Rio Janeiro (about 35* N. to about 23' S.), 9 or 10 species have been 

 found. 



Six species are known from the coast and neighbouring islands of N. W. 

 Africa, two of these West-African species also having a very extended range 

 eastwards through Indian and Malaysian seas into the Pacific. The genus 

 is also represented in the Mediterranean. 



The distribution of Ctibanarius is very like that of Paguristes, with this 

 great difference, that whereas Paouristes has a tendency (especially in the 

 tropics) to emigrate mto the deep sea, Clibanarius holds its own as a littoral 

 genus and even shows a tendency to ascend into brackish waters, one species 

 being met with not far from Calcutta. As far as I can ascertain, only two 

 species of Clibanarius have been found below the loo-fathom line ; and it is 

 a singular fact that although these two species agree with one another in two 

 important characters (distant ophthalmic scales, and abnormal development 

 of 4th abdominal appendage of female) that distinguish them from all other 

 Clibanarii, ont comes from the W^est Indies and the other from off the Malabar 

 coast. 



Key to the Indian species of Clibanarius. 



1. The dactylus of the 3rd pair of thoracic legs (2nd pair of crawl- 

 ing legs) is decidedly longer than the propodite : — 



A. Byestalks much shorter than the antennular peduncles : — 



i. Inner lower border of merus of chelipeds simply 

 serrulate ... ... 



ii. A strong tooth at the near end of the lower inner 

 border of the merus of the chelipeds 



B. Eyestalks as long as the antennular peduncle : — 



i. Eyestalks much longer than the anterior border 

 of the carapace, the eyes occupying about one- 

 eleventh of their length 

 ii. Eyestalks equal in length to the anterior border 

 of the carapace, the eyes occupying about one- 

 eighth of their length ... _ 

 II. The dactylus of the 3rd pair of thoracic legs, though it looks 

 shorter, is exactly the same length as the propodite : — 



A. Ophthalmic scales, as usual, almost in contact : — 



i. Chelipeds, legs, and anterior part of carapace red, 



with a profusion of white spots _ _. C. cruentatus- 



ii. Chelipeds, etc., deep red, without spots _ C. arethusa. 



S. Ophthalmic scales widely separated ; chelipeds and legs 



red with broad white cross-bands ... ... C. albicinctus. 



C. clibanarius. 



C. infraspinatus. 



C. paAaveiisis. 



C. striolatiis. 



