486 Mr. D. Sharp and Mr, F. Muir on the Comparative 
III. MORPHOLOGY. 
A. SPECIAL ANATOMY. 
Family CICINDELIDAE. 
Forms examined: Manticora tuberculata Deg., S. Africa. 
Omus californicus Esch., N. America. Cicindela tortuosa 
Dej., N. America. Therates lobiatus Fabr., New Guinea. 
Tricondyla aptera Ol., New Guinea. 
Figs. 29-31 of Pl. XLVI. 
Manticora tuberculata (Pl. XLVIT figs. 31, 31a, 310). 
Median lobe curved, tubular ; median orifice at distal end on ventral 
side, about one-fifth the length of lobe ; median foramen at basal end, 
as large as circumference of lobe ; dorsal edge forming a projection to 
which lateral lobes are articulated. Lateral lobes broad at base, with 
slender, free tips, Basal-piece shield-shape, connected to lateral lobes 
by a curved band broader in middle ; the lateral lobes are slightly 
asymmetrical and the distal end of each lobe lies on the left side of 
the median lobe. The internal sac is nearly as long as the median 
lobe ; at the point where the ejaculatory duct enters the sac there is 
a small chamber with chitinous walls (fig. 316) drawn out into a 
long, slender flagellum, with the external opening at its tip. Only 
the baso-dorsal part of the sac is evaginated, as a tongue, with 
the lateral edges turned down to form a groove, along which the 
flagellum passes (fig. 3la); the rest of the sac is crushed up like 
a concertina and the flagellum is pushed out, 
Omus californicus. 
Median lobe as in Cicindela but irregular in outline ; basal half 
of lateral lobes wider than in Cicindela, distal half tapering to a 
point. Basal-piece forming a thin V-piece on ventral side of median 
lobe. Internal sacwell developed, a thin, long, curved chitinous 
spine rising from the apex. 
Cicindela tortuosa (Pl. XLVII fig. 30). 
Median lobe curved, tubular, swollen along the distal two-thirds ; 
median orifice forming a slit along ventral side of the distal fourth 
of lobe ; median foramen at basal end. Lateral lobes slender, two- 
thirds as long as median lobe. Basal-piece V-shaped, connected to 
lateral lobes about one-third from their base. Internal sac large, 
