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I. Paguristes balanophilus, n. sp. Plate III., fig. i. 



Carapace non-setose, its breadth across the branchial regions about 

 three-fifths its length in the middle line. The slender rostrum reaches well 

 beyond the middle of the ophthalmic scales. * 



Eyestalks slender, slightly longer than the front border of the carapace 

 and considerably longer than the antennular peduncle. Ophthalmic scales 

 large, bifid or trifid at tip. 



Antennal acicle slightly setose, strongly spinose, reaching nearly half- 

 way along the terminal joint of the peduncle : flagellum decidedly longer 

 than the carapace. 



The leftcheliped, the length of which is about twice that of the carapace 

 measured in the middle line, is somewhat the larger, especially in respect 

 of the hand, but except that the inner edge of che right carpus is spinose 

 both chelipeds are alike in sculpture. A close but fine and very short 

 tomentum, not in any way obscuring the surface sculpture, more or less 

 covers the under surface and distal end of the merus, and the upper surface 

 of the carpus and hand : the under and outer surfaces of the merus are 

 granular, and there are some transverse rows of spinules along the upper 

 border of this joint at its distal end : the exposed surfaces of the carpus are 

 closely covered with sub-spiniform granules and tubercles, and those of the 

 hand and fingers with small muricated or crystalloid tubercles having in places 

 almost a squamiform appearance : the cutting edges of the fingers are straif^ht 

 and entire, and meet closely along their whole length. 



The 2nd and 3rd legs of the left side do not reach to, while those of the 

 right side reach well beyond, the tips of the chelipeds : in the 2nd pair the 

 posterior border of the merus and the anterior border of the three terminal 

 joints are setose, and in the case of the carpus and propodite strongly spinose, 

 the dactylus being only spinulose : in the 3rd pair the setse are very much 

 less noticeable, except on the dactylus, and distinct spines are present only 

 on the anterior border of the carpus. Some subsquamiform markings are 

 present on the inner surface of the two terminal joints of both these le^^s. 



Length of carapace 20 millim. Colours in spirit ; pinkish white; a well 

 defined orange patch in a violet field on both inner and outer surfaces 

 of merus of chelipeds — most distinct on the inner surface. Eggs large, well 

 covered by the brood-pouch. 



Found in wide-mouthed shells of many kinds, the shells encrusted with 

 ActtnicB and Epizoanthus and Capulus, and particularly with Balanidce. 

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