420 A. E. Verrill Decapod Cnisfnrcn of 1^ mm /In. 



/ 



OXYSTOMATA u LEUCOSOIDEA. 

 Family CALAPPID.ffi. !:. Crabs. 



Calappa flammea (Herbst) Bosc. Box Ci-u/i. 



Ca, !<<, Jhiiiu,n-<i Ht-rbst, op. cit., vol. ii, p. 161, pi. xl, Hi;. 'J. 1794. 



fii/n/!/!!! jlmtuiiea Bose. Hist. mtt. C'rust.. i, p. IS."). ISd-J. Micrs, Voy. Chal- 

 lenger, xvii, p. 'JS4. pi. xxiii. tigs. l-l/'. issii ,s\ nonymy). Kankin. op. cit., 

 p. .W. 



Calappa nnir>n<-<itu Latr., Hist. nat. Crust.. v. p. iiii'. 1 , iso:; ( K.-iltr. ). 

 Desmavest. C'misi.l. Crust., p. lull. ]S -.>;,. H. Miln.-Edw., Hist. nat. Crust., 

 ii, }>. 104, 1S37. Smith, these Trans., iv, p. ,';::. ISSD (\oun- at \V ..... Is 

 Hole; dest-r. nf ni.'^aln],v K Ann. i;.-p. U. S. Coin. Kish and Fishrri.'s for 

 issr,. ],. :u, 1S86. 



< 'n/tt/,/,11 Jliiininni M. J. Ratlibun. lirarli. and Macr. Port" Rim. ]. S|. pi. ii 

 (colored). 



PLATE XXV. Fn.i KK 1. 



This lai'o-c an<l curioii- spd-ios is easily <lisl iii^-iii>lic(l from all 

 others ly its form and colors. 



The most common color variety, taken in Castle Harbor, had the 

 ground-color of the carapace dull olive-l>ro\vn, in life, streaked 

 irregularly with many tlame-slia|.ed Blotches of lri^ht i-i-d ; edires 

 of carapace hrio-ht yellow. Distal part of chelipeds yellow, with 

 large broad patches of dark red; dibits pale red or pink. Ambula- 

 tory legs pink above; the anterior edges bright red: the posterior 

 edges and tarsi bright yellow. 



Other specimens had the carapace covered with pretty regular, 

 round, ocellated spots, the center white, sin-rounded by a ring of 

 dark red or reddish brown. Chelipeds pink, spotted with roundish 

 spots of deep red; spines red; tips of digits yellow. Ambulatory 

 legs purple, with the articulations and posterior edges red ; tarsi 

 yellow. Its colors appear to be nocturnally protective. 



The young of this species are narrower than the older ones, as 

 shown by the following table. The ratios of the length to breadth 

 of the carapace increases pretty regularly from 1 : 1.22, up to 1 : 1.59 

 in the largest. In still younger specimens examined the ratio is 

 even smaller than the smallest in this table. 



