54 UNITED STATES NATIONAL MUSEUM BULLETIN 296 



Figure 9. — Lithoglyptes mitis, new species: a, female side view; b to g: opercular horizons 

 and details: b to d, in coral from Kwajalein, Marshall Islands, scale approximate; e, f, in 

 Bursa bubo from Veti Levu, Fiji: e, right operculum, female 1.33 x 0.95 mm;/, left oper- 

 culum, female 1.20 x 0.86 mm; g, h, mandibles: g, from Fiji, A, from Samoa; i, young male, 

 in carapace; j, mature male. 



Lithoglyptes mitis is difficult to separate from L. spinatiis. The latter 

 species is abundant throughout the world, and frequently occurs with 

 L. mitis. The presence of several species from several families in one 



