36 



demarcated from body by an impression. Posterior section strongly acerose: extends far 

 past the posterior margin of lobe. - Ventral view: Proximal ridge moderately broad; long; 

 curved distad; distinct from lobe. Apex aciculate. Anterior to antero-median section 

 digitate: slender; obscures distal ridge. Median to posterior section obscured by the distal 

 ridge. Distal ridge broad but short. Anterior to median section concealed by the proximal 

 ridge. Median and posterior sections arise from the proximal and posterior margins of the 

 distal lobe: weakly distinct from lobe: broad but short. Median section convex. Postero- 

 median section waisted. Subalare tendon attachment point very long and narrow; apically 

 not curved ventrad; posterior margin rounded; extends posteriad from the median; weakly 

 visible dorsally. 



Body - Dorsal view: about as long as broad. Proximal lobe oriented proximad: long: 

 moderately small; weakly deltoid; arises from the postero-medial section of ridge; strongly 

 sclerotized; convex. Base broad. Posterior margin weakly enlarged; concave. Apex weakly 

 curved antero-proximad: narrowly truncate. Distal lobe large and broad; roundly deltoid: 

 much larger than proximal lobe; moderately sclerotized: planate. Base moderately broad. 

 Apex broadly rounded. Anterior margin normal length; straight. Posterior margin very 

 weakly concave: very weakly reduced. - Ventral view: Proximal lobe narrow and long: 

 convex. Posterior wing process junction formed as an ovoid convexity which extends 

 antero-proximally from the postero-distal comer of the lobe; long. Distal lobe discontin- 

 uous with ridge; planate. 



Median Plate (Fig.54) 



FM1 narrow; oriented proximad anteriorly and postero-proximad medially and posteriorly. 

 Anterior section broad narrow. Median and posterior section extremely broad. Proximal 

 margin convex. Articulation with 2 Ax extends along the posterior third of the distal lobe 

 over the posterior section of the ventral ridge. Distal margin weakly and narrowly fused 

 to 3Ax. FM2 very long: oriented posteriad: acerose. Apex separated from FM1; separated 

 by a membranous gap. 



Third Axillary (Fig.55) 



Head broad and truncate: strikingly convex; normal length. Proximal margin straight. 

 Anterior margin weakly convex; not enlarged ventrally. FCu normal size; occupies two- 

 thirds of the head: weakly ovoid. FA moderately large: occupies the distal third of head, 

 broadening posteriorly; narrowly deltoid. Suture line between FCu and FA present. Suture 

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

 Neck moderately elevated dorsad. FCu forms the anterior portion of neck. FA forms the 

 distal portion of neck. AXCu section of neck extremely narrow; moderately elevated. 

 Prong armed with two teeth. Anterior tooth very small: fastigate. Apex rounded. Posterior 

 tooth moderately short; fastigate. Apex rounded. Ridge enlarged dorsally relative to AXA. 

 Detached AXCu fragment pectinate: thin. Apex aciculate: armed with one long posterior 

 tooth, and two short anterior teeth. 



Tail narrow, long and convex: acerose. Dorsal surface oriented mesad. Anterior section 

 concave. Median section concave. Posterior section convex. Window absent. FJ antero- 



