268 



L. A. BORRADAILE. 



side to side, hairy, and granular. (2) Front narrow, triangular with rounded apex, hollowed 

 and grooved above. Front-orbital breadth small. (3) Anterolateral edge in-egularly set with 

 small spines, passing evenly into posterolateral, without orbital angle. (4) Orbits small, com- 

 pletely filled by eyestalks, not closed. (5) Eyes with relatively large end-joint but small cornea, 

 which is on the underside at the free end. The upper side is granular and hairy like the 

 carapace, but the underside is smooth and its cuticle transparent. (6) Antennae with rather 



Fig. 59. Caecopilumnus hirsutus ; a. whole animal, b. outside of hand, c. view of underside with roof of mouth laid 

 bare, d. front view to show orbits closed by eyestalks, e. underside of eye enlarged, showing small cornea and 

 mass of pigment within stalk. The hairs have been taken off the right side of the body. 



broad basal joints, which do not completely fill the orbital gap. (7) Thir-d maxillipeds \vith 

 broad, squarish ischiopodite and meropodite, the latter having its fore edge rounded, and 

 narrow exopodite. The caqjopodite is attached distally to the meropodite. (8) Endostome 

 ridges present and distinct, but not reaching the fore edge of the mouth. (9) Chelipeds equal, 

 granular, with pointed fingers. (10) Walking legs stout and of moderate length. 



The single specimen being a female, it is impossible to describe the characters of the male. 



As to the habits, nothing is known, save that the crab was taken on the reef There is 

 nothing in its appearance to suggest a parasitic existence except the reduction of its eyes. 

 Probably the peculiar conformation of the orbits is due to some circumstance which makes it 



