HAWAIIAN ACANTHURID CALIGOIDS — LEWIS 191 



process. Second segment truncate, both proximal and distal surfaces 

 forming broad articular surfaces, distal lateral surfaces heavily 

 chitinized. Third segment with curved terminal process and two 

 spinules, one on proximal, second on medial inner surface. Terminal 

 process distinct from segment, strongly developed; inner surface of 

 process flat, lateral and outer surfaces rounded. Inner, flat surface 

 of terminal process with minute nodules on distal portion, distal end 

 of process tapered to sharp point (fig. 13g). 



Second antenna of male three-segmented. First segment irregular, 

 attached to cephalothorax along all of proximal and most of inner 

 lateral surface ; with broad articular surface on distal end. Second 

 segment strongly developed, proximal region almost three times 

 width of distal; inner distal surface concave, with several small 

 adhesion pads. Third segment short, with compound terminal 

 process and simple spinule serving as accessory process. Compound 

 terminal process consisting of bifurcate process arising from base of 

 simple, curved process. Accessory process arising from inner distal 

 surface of segment (fig. 13h). 



Mandible of female and male four-parted. First part broad at 

 proximal end, tapered to slender distal end; second part short, tapered 

 to junction of third part. Third part long, length greater than 

 combined lengths of other three parts, tapered slightly to junction 

 of fourth part; fourth part short, curved inwards, slightly thickened 

 along outer margin, distal end rounded, 13 toothlike denticulations 

 present along inner margin (fig. 13^). 



Postantennal process of female and male attached lateral to base 

 of second antenna. Process spinelike, middle with sharp bend, 

 distal half pointing posteriorly and medially. Distal end of process 

 bluntly pointed; inner margin swoUen into distinct lobe, outer margin 

 with small, rounded knob just proximal to sharp bend. Process with 

 two small nodes on inner surface, each with several minute setules 

 (fig. 13i). 



Postoral process of female and male situated just lateral to base 

 of mouth cone, consisting of bifurcate process and two nodules, one 

 anterior to base of each corner of process, each bearing several setules. 

 Two tines of bifurcation equal in female, sharply pointed; tines 

 unequal in male, outer slightly shorter than inner, both with pointed 

 distal ends. Acuminate condition of inner tine of process in opposition 

 to Shiino's original description (1954) in which inner spine is indicated 

 to be broad, distal end rounded (fig. 13^). 



MaxiUa of female and male two-segmented, attached lateral to 

 postoral process. First segment shorter than second, narrower 

 proximaUy than distally, with proximal end protruding as articular 

 surface and small, rounded projection present on distal surface and 



