376 bulletin: museum of comparative zoology. 



gonad types has recently been discussed in detail by Hartlaub, 1913). 

 In Eutiara, as in Neoturris, the four broad interradial zones, although 

 bare of folds, except near the upper end of the manubrium where the 

 two series in each quadrant approach each other, bear sexual products 

 in irregular pockets. And though these are much fewer, 2 or 3 in 

 each quadrant, than in Neoturris, it is possible that they may increase 

 in number with the continued growth of the Medusa; especially since 

 the thinness of the gastric wall, even in the region of the sexual folds, 

 shows that the specimen is immature. 



Canal-system. The radial canals are very broad; next the ring- 

 canal their margins are simply more or less wavy : but above ^ of the 

 bell-height their margins bear numerous long diverticula (Plate 1, 

 fig. 1), some of them simple, others dendritically branched, with short, 

 blunt terminal lobes, which are largest at, and slightly above, the lower 

 edge of the slit-like gastric openings of the canals. The margin of the 

 ring-canal, itself as broad and flat as the radials, is smooth except for 

 1-3 very small triangular spurs per quadrant. The four interradial 

 centripetal canals, mentioned above as the most characteristic feature 

 of the genus, are as broad as the radials, and reach to about ^ of the 

 bell-height, where they end blindly (Plate 1, fig. 1). Their margins 

 are wavy, with a few short, blunt, lateral, and terminal diverticula at 

 their upper ends, corresponding, in size, to the small diverticula from 

 the radial canals at the same level. And one of them bears two short, 

 pointed spurs, at its junction with the ring-canal, similar in outline 

 to the spurs of the latter. 



Tentacles. There is a large tentacle opposite every canal, radial, or 

 centripetal, i. e., eight in all; the basal bulbs are large, triangular, 

 laterally compressed; they clasp the exumbrella (Plate 1, fig. 3) and 

 their outer corners are continuous with the exumbral bands already 

 described. Such of the tentacular filaments as I was able to dis- 

 entangle are about three times as long as the bell is high: their tips 

 are all destroyed. There are no tentacular ostia on the basal bulbs, 

 such as occur in Neoturris foniata (Bigelow, 1909a, p. 209). The 

 margin between the tentacles bears a series of small rounded, rudi- 

 mentary tentacular bulbs, without filaments, none of which show 

 any signs of later developing into tentacles; their number per octant 

 is 8, G, 5, 9, 7, 7, 9, 8, a total of 59. In their permanently rudimentary 

 condition Eutiara agrees with Leuckartiara gardineri Browne (1916). 



Ocelli. No ocelli, or pigment-clusters, are to be seen on the bases 

 of the eight large tentacles. But most of the rudimentary knobs bear 

 abaxial pigment-spots near their tips (Plate 1, fig. 4): and the few 



