




IP ILA; Ss, 
Fig. 1. Lusthenopteron Foordi, Whiteaves. ~~ Micro-section of head 
plate. oS er eee OS 
Fig. 2. Eusthenopteron Foord:, Whiteaves. Micro-section of upper 
portion of scale. : | 
: Riches: H oloptychius QOnuebecensis, Whiteaves. Longitudinal section 
of scale near its termination. = 
4 
Fig. 4. Holoptychius QOucbecensis, Whiteaves. Longitudinal section =f ales my 
ne . 
through parts of three scales. SS ees ae 

