Boone, Critstacea, Cruise of "Alva," 1931 41 



teen to twenty percentum longer than the carapace ; the basal ar- 

 ticle being nearly subequal in length to the antennal peduncle. 

 The antennal peduncle exceeds the length of the eyestalk by the 

 distal joint. The acicule is compressed, nearly lanceolate; not co- 

 alesced with the second peduncular article. The eyestalks slightly 

 exceed the second antennal article in length and externally appear 

 subcylindrical, but thir inner surfaces are compressed and have 

 sharp margins. 



The chelipeds are unequal; each has the merus transversely 

 rugose; the carpus is irregularly patterned with small vesicular 

 tubercles which tend to become more numerous, coarser and 

 spinose with horny tips along the margins ; the palm and fingers 

 are somewhat convex on the outer surfaces and similarly orna- 

 mented with vesicular tubercles. The larger cheliped bears along 

 the upper portion of the inner surface a thick brush of coarse 

 setae. 



The second and third pairs of legs only slightly exceed the 

 larger cheliped in length; each has the merus somewhat rugose 

 and punctate on the outer surface, while the carpus, propodus 

 and dactyl have their outer surfaces ornamented with tubercles 

 similar to those of the chelipeds, these tubercles becoming more 

 numerous and subspiniform on the dactyl. The inferior lateral 

 margins of these legs, particularly on the right side, are setose. 

 The left legs have the inner, concave surface of the dactyli dis- 

 tinguished by a fine linear, horny serrulate ridge. 



Mr. Borradaile has given an excellent account of the mor- 

 phology and habits of the oriental Cenobites in "Land Crusta- 

 ceans" in the "Fauna and Geography of the Maldive and Laccadive 

 Archipelagoes." 



References: Coenobita clypeata, Latreille, Fam. Nat. Regne 

 Anim., 1826, p. 277; also in Cuvier, Regne Anim., ser. 2, 

 t. II, 1829, p. 77.— Edwards, H. M., Hist. Nat. Crust., t. 



II, 1837, p. 239.— Dana, J. D., U. S. Explor. Exped., vol. 

 XIII, pt. II, Crust., 1852, p. 473, pi. 30, fig. 4.— Heller, C, 

 Reise. Osterreich. Fregatte "Novara" Crust., Th. II, Abth. 



III, 1865, p. 82. — HiLGENDORF, F., in Baron von der Decken, 

 Reisen in Ost.-Afrik., Bd. Ill, heft I, 1869, p. 98, pi. 6, figs. 

 3c, 4a. — RiCHTER, F., in Mobius, Meeresfaun. Mauritius und 

 Seychellen, 1880, p. 161. — Miers, E. J., Ann. Mag. Nat. 



