28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



of soft protuberances (figs. 10c, d) : first large, irregularly shaped, clus- 

 tered on anterior end but extending posterolaterally to mouth region, 

 pair also present on posteroventral surface, somewhat isolated from 

 other large protuberances; second type also irregular, smaller, clustered 

 around oral orifice. Neck indistinctly separable from cephalothorax, 

 width varying little throughout length, separated from trunk by slight 

 constriction. Trunk width varying little throughout length, with 

 narrow, V-shaped, heavily sclerotized indentation just posterior to 

 minute, lappet-shaped spermatophores adjacent to oviducal openings 

 (fig. 116). Abdominal portion of trunk tapered distally, with numer- 

 ous rodlike uniramous or biramous processes from lateral surface (figs. 

 I0e,f), each with extension of alimentary tract running to blind termi- 

 nation at distal end. Distal end of abdomen bUobed, anal opening at 

 median indentation, each lobe with minute caudal ramus. Caudal 

 rami (fig. 11a) consisting of 5 naked setules, 3 on irregular knob, 2 

 on abdominal surface adjacent to knob. 



Dorsal surface of cephalothorax with narrow, U-shaped region 

 of heavy sclerotization anteriorly, apex of U directed anteriorly, 

 with irregular suborbicular projections; ends of U with minute, spike- 

 like projections. Antennal articulation surfaces present on region, 

 just lateral to apex. Antennules not present although indication 

 of articulation surface present lateral and slightly posterior to antennal 

 base. Antennae (fig. lid) 3-segmented, segments 1 and 2 broad, 

 segment 3 and associated terminal process forming clawlike structure. 

 Outer proximal surface of first segment extending as knoblike artic- 

 ulation surface, inner lateral surface approximately three-fourths the 

 length of outer, with knobhke heavily sclerotized region distally. 

 Second segment sHghtly more than half the length of first, inner 

 distal and lateral surfaces forming spikelike projection, outer distal 

 surface irregular, forming articulation surface for third segment. 

 Third segment short, continuous with terminal process; small, lappet- 

 shaped accessory process present on proximal surface of fused segment 

 and terminal process. 



First 2 thoracic leg pairs in close proximity at anterior end of 

 trunk, third somewhat distant from second and fourth from third. 

 Ratio of proximity of thoracic leg pairs equals 1 (first to second leg) : 

 2 (second to third): 1.5 (third to fourth). Protopodites of all 4 

 legs 1-segmented although appearing 2-parted, all attached to distinct 

 interpodal plate. Thoracic legs I-III biramous (exopodite of leg II 

 lost in one specimen), rami 2-segmented; fourth thoracic leg probably 

 uniramous, ramus 2-segmented. Protopodite of all 4 legs with 

 dark brown to black pigment spot. Nature and armature of thoracic 

 legs given in figures lle-h and table 6. Some errors are beheved 

 incorporated into both the figures and the table because of the method 



