1S96,] J. R. Henderson — Some "Investigator" Paguridse. 525 



The anterior portion of the carapace is smooth, with the median 

 or rostral projection scarcely marked. The eye-stalks extend almost fo 

 the end of the autennal peduncle, but scarcely to the middle of the 

 terminal joint of the antennular peduncle; the cornea? are somewhat 

 dilated. The inner distal end of each ophthalmic scale is produced 

 into a small conical projection, from the under surface of which, near its 

 apex, a small spiuule arises. The antennal acicle is slender and strongly 

 curved, reaching to about the middle of the terminal joint of the 

 antennal peduncle ; the antennal flagellum is naked. 



The right chelipede is only slightly longer and stouter than the 

 left; both are pubescent and strongly spinose, especially on the hands 

 and fingers, the arrangement being similar in the two chelipedes. The 

 carpus is slightly longer than the hand (i.e., the propodus minus the 

 immobile finger), and it carries an inner row of curved acute spinules on 

 its upper surface, and an outer row of smaller and blunter spinules. 

 The upper surface of the hand is armed with three longitudinal rows of 

 short and curved, but somewhat blunt, spines ; the two marginal rows 

 extend to the apices of the dactylus and immobile finger respectively, 

 and are slightly more prominent than the median row, which extends 

 along the upper surface of the immobile finger. There are in addition 

 numerous smaller spines, scattered irregularly between those of the 

 longitudinal rows. The opposing edges of the fingers are rather strongly 

 toothed, and towards its apex the dactylus is corneous and slightly 

 excavated. The fingers of the left chelipede are about equal in length 

 to the palm, whereas those of the right chelipede are slightly shorter. 



The ambulatory legs are faintly pubescent, but unarmed. Their 

 dactyli are slightly longer than the piopodi, and terminate in acute 

 horny apices. 



The male copulatory organ (protruded vas deferens) is very 

 slender ; it springs from the coxal joint of the last right leg, and in one 

 specimen is rolled into a spiral of at least two turns. It becomes 

 readily uncoiled when the specimen is handled. 



The total length of a male is about 15 mm., while females with 

 ova are even smaller. Detached chelipedes probably from the same 

 specimen rneasnre as follows : — 

 Length of right chelipede ... ... ... 14 mm. 



,, „ left chelipede ... ... ... ... 13 „ 



One specimen has a small Bopyrid in its branchial chamber. 



This species is distinguished at once from the only other known 

 ludo-Pacific species, viz., G. australis Henderson, taken by the " Chal- 

 lenger," at Fiji, and in the Arafuia Sea, and 0. eiisifcr, Henderson, 

 from the Gulf of Martaban, by the armature of its subequal chelipedes. 

 J. ii. 67 



