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PROCEEDINGS OF THE NATIONAL MUSEI3M 



In general appearance it is much like A. neuquensis ; carapace and 

 rostrum very similar, but front seemingly narrower, extraorbital 

 sinuses and orbital spines wanting. Rostrum exceeds eyes by not 

 quite twice the length of cornea; the blunt carina more or less con- 

 tinued to distal extremity, more nearly approaching the ridge-roofed 

 condition of rostrum than any of the Aeglas of the A^ division of 

 the diagnostic key ; the rostrum otherwise appears quite flat, particu- 

 larly basally, and fairly well troughed or excavate either side of 

 median carina; the latter is bluntly rounded off and scabrous, with 

 rather numerous, closely set, partly imbricate-appearing corneous 



Figure 58. — Aegla affinis, new species, male holotype: a, Dorsal view; b, lateral view of 

 anterior portion; c, sternum of third and fourth thoracic somites; d, inner ventral margin 

 of ischium of left cheliped; e, lateral view of second abdominal epimeron. a, b, natural 

 size; c-e, twice natural size. 



scales not at all arranged in rows as in A. neuquensis; rostral carina 

 most imperceptibly if at all suggested posterior to obsolescent anterior 

 marginal indications of protogastric lobes. 



Anterolateral spines flattened-triangular in dorsal view, reaching 

 on the left side nearly to middle of cornea, on right well past middle 

 of cornea; anterolateral angle of first hepatic lobe somewhat pro- 

 duced, subacute or rounded off, small spinulose or scabrous; second 

 and third lobes poorly, obsolescently indicated. 



Hands more elongate-subrectangular than subovoid as in A. neu- 

 quensis, and more coarsely scabrous. Movable finger seems to be 

 without trace of lobe on outer margin near base, except on minor 

 chela, where there is a very small corneous spinule or denticle larger 



