EXPLANATION OF PLATE V. 



All the figures enlarged unless otherwise stated, the hair-lines indicating 

 the ?iatural sizes. 



Fig. i.— Egg-pod of Caloptcnus differentialis with the mouth torn open, 

 exposing the newly hatched larva of Eficauta vittata ( i a) eating 

 into an egg. and the passage which it made through the mucous 

 covering — natural size. 



Fig. 2.— Dorsal view of the first larva, or triungulin, of E. vittata; 2a, 

 one side of the head of same from beneath, greatly enlarged so as 

 to show the mouth-parts; 2 b, terminal joint of maxillary palpus 

 showing imbrications and flattened inner surface armed with stout 

 points; 2 c, leg, showing more plainly the tarsal spines; 2 e, 

 labrum; 2d, one of the abdominal joints from above, showing 

 stout points, stigmata, and arrangement of spinous hairs. 



Fig. 3.— Eggs of E. vittata, the natural size indicated at side. 



F,-g. 4.— Dorsal view of the Carabidoid stage of the Second Larva of E. 

 vittata; 4a, its antenna; 4 b, its right maxilla; 4c, its leg: + d. 

 side view of same, showing its natural position within the locust- 

 egg mass. 



Fig. 5.— Lateral view of the Ultimate or full-grown stage of the Second 

 Larva of E. vittata ; 5 a. portion of the dorsal skin, showing 

 short setaceous hairs. 



Fig. 6.— Third head, or that from the Scarabasidoid stage of the Second 

 Larva of E. vittata, from beneath, showing the reduction of 

 mouth-parts as compared with the first head (2 a) ; 6 a, antenna 

 of same; 6b, maxilla of same ; 6c, mandible of same. 



Fig. 7.— Fourth head, or that of the full-grown larva of E. vittata, from 

 above; 7 a, leg of same; j b, the breast-plate or prosternal corne- 

 ous piece. 



Fig. 8. — Lateral view of the pseudo-pupa or Coarctate Larva of E. vit- 

 tata. with the partially shed skin adhering behind; Sa, dorsal 

 view of same; 8b, its head, from the front; 8c, same from side; 

 8d, tuberculous leg; 8e, raised spiracle : 8/, anal part of same. 



Fig. 9. — Lateral view of the true pupa of Epicanta cinerea Forst; ga, ven- 

 tral view of same. 



Fig. 10. — Epicauta vittata (lemniscata or trivittate var.) 



Fig. II- — Epicauta cinerea Forst. ( = marginata Fabr.) 



Fig. 12. — Antenna of the triungulin of Epicauta pennsylvanica • 12a, 

 maxilla of same ; 12b, labial palpus of same. 



Fig. 13. — cT Hernia minutipennis, dorsal view; \^a. lateral view of same : 

 13 £, simple claw of same ; 13c, Coarctate Larva; 13 d, leg of 

 ultimate stage of Second Larva. 



