Fig. 8
Simplified diagrams summarizing the results of retrograde fills of commissures #1 to #6 in Euperipatoides rowelli. Anterior is up. Syringes point to the corresponding fill sites. a–f Note the diminishing number of somata within the deutocerebrum and a decreasing shift in position of somata within the connecting cords from anterior to posterior (commissure #6 is the first post-oral commissure that shows no anterior shift in position of the associated somata). at antennal tract, cc connecting cord, dc deutocerebrum, ey eye, jn jaw nerve, nc ventral nerve cord, pc protocerebrum, sn slime papilla nerves