FISHERY BULLETIN; VOL. 86, NO. 2 



face. Protogastric, mesogastric, metagastric, and 

 cardiac regions poorly indicated; epibranchial 

 line indicated by small, light colored blotches 

 originating posterior to lateral angle at each side 

 and arching anteromesially over branchial re- 

 gion, then posteromesially toward mesogastric 

 region. Posterior margin concave and paralleled 

 by obsolescent postmarginal groove becoming 

 more pronounced along posterolateral margin. 



Subhepatic and subbranchial areas orna- 

 mented with small granules, coarsest along upper 

 part of hepatic region but becoming finer and 

 more numerous near base of chelipeds. 



Orbits sunk into essentially smooth transverse 

 concavity in anterolateral region confluent later- 

 ally at either side with a prominent irregularly 

 oval tan colored spot having very finely granu- 

 late, shallowly concave surface; somewhat in- 

 flated and irregularly granular suborbital area 

 almost fully visible in dorsal view, reaching level 

 of front, tilted anteroventrally from frontal plane 

 lateral to and almost at same level as epistome. 



Eyestalks projecting anterolaterad, barely 

 movable, depressed and broadened to fit snugly in 

 orbit; unpigmented cornea terminal, subcircular, 

 narrower than eyestalk and anterolaterally ori- 

 ented. 



Epistome (Fig. lOe) projecting well beyond 

 front, its anterior margin cut into 6 unequal 

 lobes; rather narrow and advanced submedian 

 lobes, separated by narrow deep notch, much 

 broader intermediate lobes and somewhat less 

 broadened lateral lobes less advanced. 



Antennules folding transversely, stouter than 

 antennae, large bulbous basal articles contigu- 

 ous, concealed beneath front, interantennular 

 septum represented by minute remnant at upper 

 and lower edge of antennular fossa; slender 

 penultimate and terminal articles of peduncle 

 nearly equal in length, former slightly hollowed 

 laterally, latter slightly longer and more slender. 

 Flagella short; mesial 7-segmented ramus slen- 

 der; slightly shorter lateral ramus curved, multi- 

 segmented, thick at base but tapering to point, 

 dense mesial brush of long sensory setae in chord 

 of curve. 



Antennal insertion mesial to eyestalk; pedun- 

 cle mesial to eyestalk, extending anteriorly or 

 anterolaterally in situ; fixed article broad but 

 short; first free article slender, ca 1.7 length of 

 second article; latter broadened distally; terminal 

 article short, its diameter only slightly greater 

 than that of flagellar base; flagellar length ex- 

 ceeding midline of front. 



Mouth field (Fig. lOe) divergent anteriorly, 

 sides of its frame broadest posteriorly and some- 

 what swollen and granular at anterolateral cor- 

 ners, maximal inside anterior width about 1.4 

 minimal inside posterior width. Third maxil- 

 lipeds filling mouth field except for narrow gap of 

 nearly uniform width between ischia of en- 

 dognaths and rather irregular gap anteriorly be- 

 tween meri-carpi of endognaths and epistome; ex- 

 ognaths overlapping sides of mouth frame. 

 Endognaths with exposed surface bearing sparse, 

 sometimes linear, setose punctations; exposed 

 surface of ischium nearly smooth; elongate polyg- 

 onal in outline but primarily rectangular, great- 

 est (distal) width 1.1 narrowed part ca 1/2 length 

 from base; mesial margin straight through 

 most of its length but curved at each end, tooth- 

 less, bearing many stifl" straight setae, submar- 

 ginal zone somewhat thickened and flanked later- 

 ally by shallow longitudinal groove; anterior 

 margin nearly perpendicular to mesial margin 

 except for anteriorly projecting truncate lobe at 

 inner corner; lateral margin concave; posterome- 

 sial margin obliquely convex; basi-ischial suture 

 line visible posterolaterally. Merus slightly 

 narrower than ischium; low granules with tips 

 directed anteromesially along distal margin; ir- 

 regularly quadrate perimeter flanked by submar- 

 ginal thickened zone and groove similar to mesial 

 counterpart on ischium except on straight proxi- 

 mal side, anterolateral angle broadly rounded, 

 anteromesial angle at insertion of palp oblique; 

 mesial margin doubled anteriorly for reception of 

 folded palp, its ventral (exposed) side broadly 

 angled proximal to carpopropodal articulation; 

 posteromesial corner fitted to projecting lobe of 

 ischium, dorsal (hidden) side produced behind 

 carpus, its margin setose. Palp large, dactyl 

 reaching posteriorly about 1/4 length mesial mar- 

 gin of ischium. Carpus expanded distally, nar- 

 rowed proximally, bent nearly at right angle near 

 insertion and obscurely crimped inside angle; 

 dense tuft of setae on distooral surface. Propodus 

 wider than carpus, longer than broad, asymmetri- 

 cally ovate in ventral view; distal (longest) mar- 

 gin convex, densely beset with rows of strong ser- 

 rated setae, longest distally; distal tuft of such 

 setae on dorsal surface. Linear dactyl slightly 

 bent away from midline in distal part and setose 

 as propodus, especially on prehensile edge. Ex- 

 ognath narrow, not extending to full length of 

 merus; ventral surface slightly curved mesially to 

 fit closely against lateral side of endognathal is- 

 chium, with dorsomesial flange (widest distally) 



284 



