30 
PACIFIC SCIENCE, Vol. XXI, January 1967 
Fig. 20. Loxoconcha batei n. sp. a-b, Holotype usnm 648771; a, lateral view of male left valve; b, 
dorsal view, c, Paratype sdnh 1050; internal view of male right valve; adductor scars in white; marginal 
features not preserved, d, Paratype sdnh 1051, internal view of female left valve; adductor scars in white; 
marginal features not preserved. 
Duplicature of moderate width; radial pores 
sparse, straight, simple; vestibules absent; nor- 
mal pores somewhat abundant, of intermediate 
size, apparently corresponding with external 
pits. Adductor muscle scar pattern of four small 
scars in short vertical row, third from top scar 
divided ; two antennal scars in front of adductor 
group. 
dimensions: 
SPECIMEN LENGTH WIDTH HEIGHT 
Holotype usnm 648773 
(entire) T-12 0.51 0.24 0.29 
Paratype usnm 648774 
(left valve) T-12 0.48 0.13 0.29 
distribution: As fossils from T-12 (7 
valves), and S-23 (1 entire); Recent from HA 
