SEGMENTS OF TRIGEMINAL NERVE-GROUP 269 
A. 
Dorso- ventRAL Muscnzs on 
CaRaPace OF ScorPion, (From 
Miss Brcx.) 
B 
SIMILAR MuscuEs on CaRAPACE 
OF HURYPTERUS, 
C. 
SiminaR Musctes on HeEap- 
SHIELD OF A CEPHALASPID, 
le., lateral eyes; c.e., central 
eyes; Fro., narial opening. 
62-65 refer to Miss Beck’s cata- 
logue of the scorpion muscles. 
Fra. 110. ‘ 
