H. pratti at embryonic Stages 11-22. (A1-4) Stage 11. (B1-6) Stage 14. (C1-6) Stage 15. (D1-6) Stage 16. (E1-6) Stage 22. (A1, B1, C1, D1, E1) Lateral view with dorsal to the right; (A2, B2, C2, D2, E2) Ventral view; (A3, B3, C3, D3, E3) Dorsal view of the head and trunk; (A4, B4, C4, D4, E4) Dorsal view of the trunk and tail; (B5, C5, D5, E5) Close-up for the left forelimb; (B6, C6, D6, E6) Close-up for the left hindlimb. ah, auditory hillocks; al, allantois; crf, cranial flexure; cvf, cervical flexure; eam, external auditory meatus; h, heart; lv, lens vesicle; np, nasal pit; plp, plagiopatagium; pr, pigmented retina; prp, propatagium. Bar = 1 mm in A4, B4, C4, D4, E4 (applies to A1-4, B1-4, C1-4, D1-4, E1-4), D5-6 and E5-6; bar = 500 μm in B5-6 and C5-6.