TEN NEW FIREFLIES FROM JAMAICA—BUCK 79 
Microdiphot cavernarum Barber, the smallest known Jamaican firefly (3.5 mm.), 
reproduced to same scale as figs. 26 and 27 to illustrate the extremes in known 
aedeagal absolute size and the fact that fireflies differing greatly in body size 
may differ less in aedeagal size; 29, claws of Photinus elisabethae illustrating the 
usual type in Photinus and Diphotus (this and the other claw drawings same 
magnification as fig. 13) ; 30, claws of left front leg of Diphotus masti, new species, 
showing enlarged plate or “thumb” (7), which points diagonally downward 
and is here foreshortened (see fig. 35); 31, claws of Presbyolampis immigrans 
showing bifid structure; 32, ventral view of part of abdomen of male of Photinus 
elisabethae showing position of photogenic organs (OQ, cross-lined); 33, ventral 
view of part of abdomen of female of Photinus elisabethae showing position of 
photogenic organ (O, cross-lined); 34, ventral view of part of abdomen of 
Diphotus mastt showing position of photogenic organs (QO, cross-lined) ; 35, side 
view of left front claw of Diphotus masti showing “thumb’’; 36, dorsal surface 
of posterior end of sternite 9 of Diphotus masti showing recurved hooks (same 
magnification as fig. 37); 37, side view of sternite shown in figs. 36 and 38; 38, 
dorsal view of inner surface of sternite 9 of Diphotus masti showing recurved 
hooks at apex, its greatly elongated shape, and the muscles (m) attached at 
both ends. 
U.S. GOVERNMENT PRINTING OFFICE: 1947 
