488 Mr. D. Sharp and Mr. F. Muir on the Comparative 
tata Fabr., India. Tefius difficilis Sternberg, Nyasa- 
land,  Pterostichus niger Sch., and  oblongopwnctatus 
Fabr., Brockenhurst. Ophonus sabulicola Panz., Southsea. 
Laemosthenes complanatus Dej., Southsea. Bembidium 
biguttatum Fabr., Brockenhurst. 
Figs. 32-85 of Pls. XLVII and XLVIII relate to 
Carabidae. 
Carabus violaceus (Pl. XLVII figs. 32 and 32a). 
Median lobe long, tubular and well chitinised; median orifice 
extending about one-third along ventral side, the chitin of lobe 
thinning out into membrane of sac; median foramen running 
across basal end of lobe, the edge of which projects on dorsal side 
for attachment of lateral lobes. Lateral lobes thin, especially at 
distal end, nearly reaching to tip of median lobe. Internal sac well 
developed, covered with short dark spines on basal half; folds of 
membrane around opening of duct (od) complex (Fig. 32a). The 
figure shows a depression along the dorsal side which under fluid 
pressure becomes everted. 
Cychrus ventricosus, 
Somewhat like C. violaceus but median lobe more curved, especi- 
ally at base. Lateral lobes stouter and developed more perfectly, 
with tips slender and bearing a few hairs. Internal sac short 
(about one-third the length of median lobe) with long thread-like 
diverticula immediately ventral of opening of duct ; surface of sac 
studded with minute papillae. 
Nebria brevicollis (Pl. XLVII fig. 34). 
Median lobe curved cone-shape, the median orifice being situated 
at the small distal end, the median foramen at the large basal end. 
Lateral lobes attached to dorsal edge of median foramen, left lobe 
broad, flat, reaching to tip of median lobe, right lobe broad and 
flat, reaching about two-thirds along median lobe. Internal sac 
small and undifferentiated. 
Metrius contractus 
Median lobe short, deep, flattened ; the distal end produced into 
a curved blunt spine ; median orifice narrow, running along one- 
fourth of ventral side of lobe, near distal end; median foramen on 
basal end somewhat dorsal. Left lateral lobe narrow, spatulate at 
end, with fringe of long hairs along dorsal side, a little longer than 
median lobe; right lobe shorter, broader and produced to point, 
without hairs along edge. Internal sac large and complex. 
