=_M. Extensor Brevis Digiti III_= (M. extensor proprius digiti III), Figs. 19E, 20N _T. pallidicinctus_ GENERAL DESCRIPTION AND RELATIONS.--Short and relatively broad (narrow proximally); on mid-anterior surface of distal part of tarsometatarsus; tendon of insertion fused with articular capsule. ORIGIN.--The origin is fleshy from the mid-anterior surface of the distal part of the tarsometatarsus ending a short distance proximal to the trochlea for digit III. INSERTION.--The flat tendon passes over the trochlea for digit III and attaches to the dorsal surface of the proximal end of the first phalanx of digit III. INNERVATION.--The compound nerve formed by the fusion of a branch of the superficial peroneal nerve with a branch of the deep peroneal nerve gives a twig to the proximal end of the muscle. INDIVIDUAL VARIATION.--In some cases, the twig arises from the deep peroneal branch alone (which is not joined by the superficial peroneal nerve). The individual variation is insignificant in _T. cupido_ and _P. p. jamesi_. =_M. Extensor Proprius Digiti III_= (Not found by Hudson, _et al._), Fig. 20N _T. pallidicinctus_ and _T. cupido_ Absent in both species. _P. p. jamesi_ This atypical muscle was found in only two legs (P.p. 1L and 4L). The following description applies to P.p. 4L (Fig. 20N). GENERAL DESCRIPTION AND RELATIONS.--Small but well developed; fleshy part 1-1/2 × 13 mm.; proximal end narrower; on mid-anterior surface of tarsometatarsus between Mm. extensor brevis digiti IV and extensor hallucis longus and mostly proximal to M. extensor brevis digiti III; tendinous distal part superficial to latter; fleshy belly ending immediately distal to proximal end of latter. ORIGIN.--The origin is fleshy from a narrow elongate area on the mid-anterior surface of the tarsometatarsus between Mm. extensor brevis digiti IV and extensor hallucis longus, beginning at the distal end (bony) of the elongate accessory insertion of M. tibialis anticus. The distal part of the belly is free. INSERTION.--The attachment is by a thin, wide (relative to belly) tendon to the superficial surface of M. extensor brevis digiti III. INNERVATION.--Not found. INDIVIDUAL VARIATION.--In P.p. 1L, the muscle is less well developed. The fleshy belly is 1 × 5 mm. It arises from the lateral edge of M. extensor hallucis longus. The extremely slender insertional tendon attaches as above. =_M. Extensor Brevis Digiti IV_=, Figs. 19E, 20N _T. pallidicinctus_ GENERAL DESCRIPTION AND RELATIONS.--Slender and tapering; on lateral part of anterior surface of tarsometatarsus; length of belly variable; middle of medial edge in contact with M. extensor hallucis longus. ORIGIN.--The origin is fleshy from the lateral part of the anterior surface of the tarsometatarsus, including the anterior metatarsal groove.