CONTRIBUTIONS TO MARINE BIONOMICS. 401 
BIBLIOGRAPHY. 
Bell, T.— British Stalk-Eyed Crustacea, 1853. 
Garstang, W.—‘‘On some Modifications of Structure subservient to Respiration in 
Decapod Crustacea which burrow in sand, with remarks on the Utility of 
Specific Characters in the genus Calappa, and the description of a new species 
of Albunea.” Quart. Jour. Micr. Sct., 1897. 
Milne-Edwards, A.— “ Hist. des Crust. Podophth. Fossiles.” Ann. Sct. Nat. (4) xiv. 1860. 
Milne-Edwards, H.—“Rech. sur le Méchanisme de la Respiration chez les Crustacés.” 
Ann. Sct. Nat. (2) xi. 1839. 
Fic. 1. 
Fig, 1.—Bathynectes longipes. Dorsal view, showing the five teeth of the antero- 
lateral margins. The chelipeds are in a half-extended condition; their pro- 
podites (hands) are shown resting against the carpal spines. The specimen 
shows an abnormality in the union of the two anterior marginal teeth of the 
right side to form a single bifid tooth. 
Fic, 2. 
Fig. 2.—Bathynectes longipes. Dorsal view, showing the position of the chelipeds 
after flexion of the wrists (carpopodites) as well as of the hands. The left 
cheliped is in the attitude assumed by the crab when imbedded in sand; the 
antero-lateral teeth are seen to form a sieve above the orifice of the inhalant gap 
between cheliped and carapace. On the right side the arm (meropodite) of the 
cheliped does not rest in its proper position beneath the enlarged posterior 
marginal tooth; hence the inhalant gap is imperfectly formed, and its aperture 
is imperfectly covered by the marginal teeth. 
