644 DESCRIPTIONS OK PLATES. 



of the current of the blood. Fig. 1, Wing case of Nepa cinerea. a, Claviis 

 h, Hemielytrum. c, Appendix. d, Metnbrana. Fig. 2, Wing case of 

 Gryllus migrator im. A, Marginal cell, i, Vena radialis. B, Central cell, 

 c, Vena cubitalis. C, Sutural cell. Fig. 3, Wing of Dyticus. a, Vena 

 marginalis or radialis. b, Vena cubitalis or postcosta, also nervus internns. 

 The marginal space is in this and in all the folloxving wings indicated by red, 

 and the sutural space by yellow. The former is bounded by the vein through 

 which the current of blood streams, and that of the latter by the one through 

 which it returns. Fig. 4, Wing of a Tenthredo. a, Vena radialis. b, Vena 

 cubitalis. , Stigma, carpus, d d, Cellular radiales. e e e, Cellula? cubitales. 

 Fig. 5, Wing of a bee. a, Marginal vein, b, Discoidal vein, d, Marginal 

 cell. e e, Cubital cells. c c, Discoidal cells, fff, Incomplete cells. 

 Fig. 6, Wing of a Tipula. Fig. 7, Wing of a Syrphus. Fig. 8, Wing of a 

 Tachina. Fig. 9, Wing of one of the smaller Muscidce. Fig. 10, Wing of a 

 Phora. Fig. 11, Wing of Hippobosca. All these figures are marked like 5. 

 Fig. 12, Anterior wing of Plalypterix, ala falcata. Fig. 13, Posterior wing 

 of Papilio Podalirius, ala caudata. Fig. 14, Anterior wing of Orneodcs 

 hexadactyla, ala digitata. 



PI. XVI. Fig. 1, Anterior leg of CaraZws. a, Coxa, b, Trochanter 

 c, Femur, rf, Tibia. S , Calcaria. e, Tarsus. Fig. 2, Anterior leg of 

 Ateuchus saoer. e, The terminal spine supplying the place of a tarsus. 

 Fig. 3, a, Intermediate leg of a butterfly, b, Abortive leg of the same. 

 Fig. 4, Swimming leg of Dyticus dispar. Fig. 5, Leaping leg of Haltica. 

 Fig. 6, a, Prehensile leg -of Mantis religiosa. 6, Prehensile leg of Nepa cinerea. 

 Fig. 7, Digging leg of Gryllotalpa rulgaris. The tarsus is three jointed. 

 Fig. 8, Fringed femur of an Andrena. Fig. 9, Supporting trochanter of 

 Carabus. Fig. 10, Double-juiuted trochanter of a Pimpla, Fig. 11, 

 Lamellate tibia of a LygcEiis. Fig. 12, Scutellate tibia of Crabro cribra- 

 rhts, a. e, The five-jointed tarsus. Fig. 13, Brush-like tibia of Apis. 

 e, Planta. Fig. 14, The sole of Carabus fringed with spines. Fig. 15, 

 Cordate tarsal joint of Timarcha tenebricosa. Fig. 16, Triangular tarsal 

 joint of Copris lunaris. Fig. 17, Quadrate tarsal joint of Buprestis 

 mariana. Fig. 18, Bilobate tarsal joint of Callidium molaceurn. Fig. 19, 

 Furcate tarsus of Xya. a, Spines on the tibia, e e, The furcate tarsus, con- 

 sisting each of one joint. Fig. 20, Tarsus with three distended joints of 

 Cidndela campestris. Fig. 21, Tarsus with four distended joints of Calosoma 

 si/cophanta. Fig. 22, Tarsus with one distended joint of Hydrophilus picevs. 

 Fig. 23, Anterior tarsus of Dytitus dispar, a, from above, b, from beneath. 

 p p, The large patellulse. Fig. 24, Claw joint of Carabus, equal claws. 

 Fig. 25, Claw joint of Anisopliafructicola. Fig. 26, Claw joint with very large 

 unequal claws of Rutila. Fig. 27, b, Furcate claw of Meloe divided near the 

 surface. c, Furcate claw of Anisoplw horticola, divided near the ridge. 



