78 



normal length; concave. Posterior margin straight; reduced. - Ventral view: Proximal lobe 

 moderately large; convex. Posterior wing process junction formed as an extremely long, 

 ridge-like convexity; shifted posteriad to occupy the extreme postero-proximal corner of 

 the subalare tendon attachment point. Distal lobe moderately small and broad; continuous 

 with ridge; planate. 



Median Plate (Fig. 124) 



FM 1 oriented strongly postero-distad. Anterior section narrow. Median to posterior section 

 moderately narrow. Proximal margin convex. Articulation with 2Ax extends from the 

 antero-distal margin of the distal lobe to the posterior section, over the posterior section 

 of the ventral ridge. Distal margin broadly and strongly fused to 3Ax; suture line indistinct. 

 FM2 slender; fused to the distal margin of FM1 along its entire length; separated by a 

 very weak suture line. Postero-distal section forms a strongly sclerotized convexity which 

 extends over a complimentary concavity on the antero-proximal extension of the 3 Ax 

 head; posteriorly deeply concave. 



Third Axillary (Fig. 125) 



Head moderately broad; weakly convex; strikingly reduced posteriorly. Proximal margin 

 shallowly concave. Anterior margin weakly concave; broad; enlarged ventrally as a broad 

 plate with a deep concavity. Antero-proximal margin weakly extended proximad; very 

 strongly sclerotized; forms a ball and socket joint with FM2. Anterior margin of extension 

 convex; articulates within the FM2 concavity. Posterior margin of extension concave; 

 articulates with the FM2 convexity. Proximal margin deeply concave; strongly fused with 

 FM1. Antero-distal margin strongly extended distad. FCu normal size; distinct; occupies 

 two-thirds of the head; deltoid. Posterior margin not reduced by AXCu. Distal margin 

 reduced by an enlarged FA and AXCu. AXCu strongly extended anteriad along the distal 

 margin of FCu. Distal section almost extending to the antero-distal corner of the head; 

 lies between FCu and FA. FA moderately large; extended proximad. Anterior margin 

 entire. Suture line between FCu and FA present. Suture line between FCu and AXCu 

 present. Suture line between FA and FJ present. 



Neck elevated proximally and distally along most of its length. FCu section of neck absent. 

 AXCu forms entire neck. Proximal margin very strongly and extensively elevated as a 

 very broad ridge. Ridge extends close to the postero-proximal margin of the tail; very 

 long. Dorsal surface of ridge is very strongly curved distad over the distal margin of the 

 tail; enlarged dorsally relative to AXA. Antero-distal margin not elevated. Embayment 

 moderately shallow. Prong armed with a single tooth; oriented proximo-dorsad; narrow. 

 Proximal margin fused to AXCu. Detached AXCu fragment slender; deltoid; weakly 

 sclerotized. 



Tail reduced; broadly deltoid; short. Dorsal surface oriented mesad. Anterior to posterior 

 section concave. Window absent. FJ+AXJ narrow; occupies the most of the tail area; 

 moderately sclerotized. Suture line between FJ and AXJ absent. Suture line between 

 FA+AXJ and AXA present. AXA as equally sclerotized as FA+AXJ; the former occupies 



