A. E. YerrUl — Decapod Crustacea of Bermuda. 



429 



It appears to be nearly allied to Hapalocarcinus marsupiaiis Stimp- 

 son.* which forms cnrions " houses " among the branches of P'JcUJo- 

 pora C'.rspirosa. The branches of the coral, in the latter case, grow- 

 up around the crab and enclose it, leaving several small apertures 

 for the entrance of water and food, but from which the crab cannot 

 emerge. 



In the latter, however, the front of the carapace is flat, not bent 

 downward, and it does not serve for an operculum, which is not 

 needed in its case. 



Figure -49. — Tri>gl'>::i.i:iiiu.i t':'i\ii'.ic-jt-i ; a. dorsal view. ^ ai»iit -i times, of a 5 

 remoTed from its den in a coral iilussa). from Dominica L; b. a smaller 5 

 specimen, x abont -i times, ventral view : the abdomen, legs, enter mai- 

 illipeds. and antenunles are removed, except one basal antennnlax segment ; 

 c, the same, another £ example : dorsal view, x 4. Phot. A. H. V. 



It is, perhaps, more closely allied to Cryptochirus coralUodytes 

 Heller,f from the Re<i Sea and ^laldives, which lives in the same 

 manner, in dens in Leptoria {^^Jfcsandra). 



The latter, however, has a differently formed carapace, smooth, 

 convex in front, without marginal spines ; orbits simple, without 

 spines ; and very different maxillipeds. 



* Proe. Boston Soc. Nat. Hist., vol. vi, p. 412, 1859. Caiman, Trans. Linn. 

 Soc. London, ser. 2. vol. viii. p. 43, pL iii, figs. 29-40, 1900. il. J. Bathbnn. 

 Crust. Hawaiian Is.. U. S. Fish Com. BulletiQ, for 1903. part iii, p. 892, 1906. 



I HeUer. Cam., Sitzungsb. iIath.-Naturwiss. Classe. Akad. Wissenschaften, 

 Wien. xliii, i, 1861. p. 366, pi. iv, figs. 33-39. 



