84 



ventral transverse rods, while in liie piesenl stale of preserviilion it pas- 

 ses at a distance above these rods. The band along the dorsal side is 

 straight and simple; there is no indication of vibratile lobes or epaulets. 

 No indication of ])ignientation is seen. Tlie oral area is very wide as in 

 species a, the mouth opening remaining uncovered. I'lic rectum and anal 

 opening are not to be distinguished. Nothing can he discerned of the 

 enterocoel or hydrocoel. 



The skeleton (Fig. 32). The postoral rods are of the same character as 



ptr ptr 



Fig. 32. Skeleton of E<hln<ii>liilciis Iransvcrsiis. species c. .\. from tiie dorsal. 13. from the 

 ventral side. -*Vi. Letters as in fig. 30; furtlier: dtr. dorsal transverse rod: pd. postero- 



dorsal rod; ptr. posterior transverse rod. 

 'riie left iiiiterolateral rod is broken and pushed some way backwards (Fig. A). 



in species a, fenestrated, with rather large holes; they are set with some 

 few small thorns in the lower part, entirely sinoolh in llic oiiler part. 

 The body rod is short, smooth; the point bent a littli' outwards, apparently 

 .somewhat widened; it appears to be finely fenestrated, or perhaps only 

 irregularly serrate this cannot be definitely ascertained in the side view 

 l)resented by the single specimen at hand. But, at any rate, it is clear 

 that there is some adaptation for the attachment of the abductor muscle. 

 The ventral transverse rod is shoit. i()l)iist, with a simple, straight point. 

 The ventral ncinicnl rod is shoit. bifurcating, one branch going along 

 with the body rod and perhaps uniting with it at the poini I his cannot 

 be definitely ascertained, but it looks so — the other braucii, the sup- 



