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PAGURISTES FECUNDUS. 



67 



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the rostrum and the lateral processes the anterior border is concave and 

 thickened so as to form a rim. The anterior gastric lobes are clearly 



defined anteriorly. , 



The ocular peduncles are long and cyhndrical, reaching considerably 



beyond the antennal peduncle, but not quite so far as the antennular 



peduncle. Tlie ophthalmic scales are of moderate size and bidentate at the 



tip, the external tooth very minute. The antennal acicle reaches almost to 



the end of the peduncle ; it is setose, and armed with six spines, two of which 



form a terminal fork, the others being marginal. The external prolongation 



of the second antennal segment is narrow, setose, and minutely spinulose; 



there is, moreover, a spinule on the upper flice of this segment behind the 



base of the acicle ; the antennal flagellum is very short (about equal in 



length to the anterior section of the carapace). The third pair of maxilli- 



peds are closely approximated at their bases ; their merus joints are armed 



with three or four denticles on the lower margin and one at the distal end 



of the upper margin. 



The chelipeds are short and of like size and shape; the merus is smooth 

 within, rugose without; the two inferior margins armed with minute black- 

 tipped spinules. The carpus is toinentose and spinulose, the largest spines 

 occurring- along the superior border ; the hand is both spinulose and pubes- 

 cent but the hair is less dense upon the fingers than upon the basal portion 

 o[ the hand, which is short and swollen below. The fingers are short, exca- 

 vated within, and terminate bluntly in dark, corneous nails. The ambula- 

 tory limbs are pubescent, particularly on the upper and lower margins; 

 the distal end of the merus, and also the carpus, propodite, and dactylus 



d with numerous spines, the most prominent of which are 



ML 



upper border of the carpus and propodite; 

 the dactylus is about equal in length to the propodite and carpus together. 

 The legs of the fourth pair are furnished with long hairs on their upper mar- 

 o-in, and there are a few spines on the upper margin of the carpus 5 the pro 



are arme 



arranged in a row along the 



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podite is rather longer than the dactylus, and the rasping surface on its lower 

 margin occupies two thirds of its length. The last pair of legs are much less 

 hairy than the preceding pair ; the rasping surface, which is truncate pos- 

 teriorly, falls a little short of reaching the middle of the hand. The telson 

 is divided by a pair of lateral incisions and a median one into four lobes, 

 those on the left side the larger; the pair of terminal lobes are obscurely 

 toothed on their margins. 



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