Species o/* Micippa and Paramicippa. 11 



Hab. Indo-Pacific or Oriental region (from the Red Sea 

 and coast of Natal to New Caledonia). 



In that which Dr. Gerstiicker distinguishes as the typical 

 form of this very variable species (from an examination of 

 Herbst's type specimen), the anterior dorsal spines of the cara- 

 pace are apparently not developed, but there are distinct 

 lateral branchial and posterior marginal spines. Length of 

 carapace and rostrum (in a female) 18 (German) lines, breadth 

 12 lines. 



I have seen no adult examples presenting exactly these 

 characters, the posterior marginal spines being deficient. A 

 small male from the coral reefs at Pa-tchu-Sau (H.M.S. l Sama~ 

 rang '), in the British-Museum collection, has well-developed 

 lateral epibranchial spines, but differs in some other par- 

 ticulars. 



Micippa thalia, var. miliaris. 



Micippa miliaris, Gerstacker, Archiv f. Naturgesch. p. 110 (1856). 

 Micippa thalia, var. miliaris, Kossmann, t. c. p. 8 (1877). 



This form is apparently distinguished from the typical 

 M. thalia only by the well-developed lateral marginal spines 

 of the carapace. The second joint of the antennae is slightly 

 dilated towards the distal extremity. 



Hab. Red Sea (Ger stacker). 



Micippa thalia,) var. aculeata. 



Micippa thalia, l)e Haan, Crustacea in v. Siebold's Fauua Japonica, 



p. 98, pi. xxiii. fig. 3, and pi. G (1839). 

 Micippa aculeata, Bianconi, Mem. Accad. Bologna, iii. p. 103, pi. x. 



fig. 2 (1851). 

 Micippa Haani, Stimpson, Proc. Acad. Nat. Sci. Philad. p. 217 (1857). 

 Micippa thalia, var. aculeata, Kossmann, t. c. p. 8, pi. iii. tig. 5 (1877). 



This variety is distinguished by having the dorsal spines 

 of the carapace as well as (usually) some or all of the lateral 

 marginal spines well developed. 



Hab. Seas of China and Japan (De Haan, Stimpson)) 

 Mozambique {Bianconi). An adult male from Mozambique 

 is in the British-Museum collection, presented by Prof. Bian- 

 coni, and labelled " Micippa cornuta, Bianconi "*. 



The dimensions of the male from Mozambique are as fol- 

 lows : — Length of carapace to base of rostrum 14^ lines 



* The Cancer cornuhts of Linnfeus, which Milne-Edwards considers 

 to be a species of this genus, differs in the arrangement of the dorsal 

 spines of the carapace from any species ■with which I am acquainted, 

 except perhaps this species and Micippa cristata, from which latter it is 

 apparently distinguished by the smooth, terete, naked chelipedes, &c. It 

 may be identical with a variety of M. thalia. 



