184 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii5 



outer margin than along inner, distal half curved inwards, inner 

 margin with 12 toothlike denticulations (fig. 12/). 



Postantennal process of female and male simple, spinelike, attached 

 lateral and sUghtly posterior to second antenna. Spinelike process 

 curved inward, distal end rounded; two nodules present on inner 

 proximal region, proximal nodule with three setules, distal nodule 

 with four (fig. 12^). 



Postoral process of female and male flattened, spinelike, situated 

 just lateral to base of mouth cone and directed posteriorly. Process 

 with broad base, width slightly less than length, tapered irregularly 

 to bluntly pointed distal end. Small, conical node present just 

 anterior to base of process, bearing three setules of approximately 

 equal length (fig. 12^). 



MaxUla of female and male two-segmented, attached just lateral 

 and posterior to postoral process. First segment short, stocky, 

 inner proximal end protruding as irregular articular surface. Distal 

 lateral margins of first segment tapered irregularly, projecting medi- 

 ally as narrow, lobelike articular surface. Second segment elongate, 

 lateral margins irregularly convex; inner proximal sm-face irregular, 

 forming articular surface and place of attachment for muscles moving 

 segment. Middle of inner margin indented in two places, minute 

 spine arising from proximal indentation, larger spine, about twice 

 length of first, arising from distal indentation; membrane present, 

 connecting both spines. Smaller proximal spine and membrane not 

 mentioned by Wilson (1905), Yeatman (1957), or Shiino (1959), 

 though both characteristics present on material identified by Wilson 

 and Yeatman as L. dissimulatus. (Both membrane and small proxi- 

 mal spine difficult to see unless appendage stained.) Second segment 

 with two long, broadly curved terminal, spinelike processes; inner- 

 most about one and a half times length of outer. Inner process with 

 membrane along inner margin and rudiments of narrow membrane 

 along outer; outer process with frilled membrane along outer margin 



(fig. 12^). 



MaxiUiped of female two-segmented, attached just posterior and 

 medial to maxUla. First segment large, strongly developed, inner 

 proximal surface ^vith lobate protrusion forming articular surface. 

 Outer distal end of first segment irregular, with shghtly projecting, 

 lobate process serving as articular surface for second segment. Second 

 segment short, with long, curved, acuminate terminal process and 

 small, spinehke accessory process from inner distal lateral surface; 

 division between second segment and terminal process indistinct 

 (fig. 12i). 



