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anterior fourth of the gastric regiem ; the 7 or 8 proximal teeth are closely set, the 3 or 4 

 following a little farther distant from one another, the I3 th — i5 th are again more closely placed, 

 while the rest are more and more remote anteriorly, so that the equal distances between the 

 20 th and 2i th like between the 2i th and 22" 1 are larger than those between the preceding teeth 

 and the largest of all ; the foremost tooth is placed close to the tip, 4-times as far distant from 

 the penultimate as from the tip, while the distance between the antepenultimate and the penul- 

 timate tooth is one and a half as long as that between the penultimate and the last. Except 

 the two distal ones, all the rostral teeth are movably articulated. While Bate's figure 5 pretty 

 well agrees with our specimen, as regards the length, shape and direction of the rostrum, the 

 rostral teeth appear in the female from Stat. 227 comparatively much smaller than in that 

 hgure, only half as long, for they measure only one-third the height of the rostrum, in Bate's 

 figure, however, two-thirds. Posterior to the i" 1 tooth the rostral carina is continued as a rounded 

 slicht crest to near the after limit of the gastric region. Lower margin unarmed, but fringed 

 with feathered setae along its whole length; lateral crest on the sides of the rostrum distinct. 

 According to S. I. Smith's description in : Annual Report of the Commissioner of fish and 

 fisheries for 1882, Wash., 1884, p. 369, in the typical Nemat. ensife?' from off the East coast 

 of the United States, "the cervical suture should be indicated by a distinct sulcus from the 

 dorsum to the upper part of the hepatic region either side"; in the female from Stat. 227, 

 however, there is only a shallow depression between the gastric and the cardiac region on the 

 dorsum of the carapace and from this depression no sulcus runs downward and forward, though 

 at a short distance from the dorsum the cervical suture becomes distinct as a groove that runs 

 downward and slightly forward, defining the gastric region posteriorly; at the lower third of 

 the carapace it passes into a short longitudinal groove, that separates posteriorly the hepatic 

 region from the gastric. A little back the orbital margin another furrow runs backward, parallel 

 with the rostral carina and defining the gastric region below, but not reaching the dimple of 

 the hepatic region. Cardiac region rounded dorsally, with a very small tubercle in the middle 

 line about at the posterior fourth ; this tubercle, that occurs also in the typical Nemat. ensifer, 

 is so small (one fourth millimetre broad) that it is invisible in a lateral view of the carapace. 

 Branchial region defined dorsally by an arched groove, that does not reach the posterior margin 

 of the carapace nor the cervical suture. Outer orbital angle obtuse, distinct. Post-antennular 

 spine reaching as far beyond the outer orbital angle as the latter does beyond the orbital 

 margin ; branchiostegal spine of the same size as the post-antennular and directed forward and 

 slightly downward. Both spines show a much smaller size than in Bate's figure. 



Abdomen not vet twice as long as rostrum and carapace combined, but 5-times as long 

 as the rostrum. Like in the variety tenuipes, according to Alcock's description (1901), here 

 also the posterior border of the 3 rd abdominal tergum is strongly and subacutely produced in 

 the middle line. Sixth somite twice as long as 5 th and just as long as the telson, exclusive the 

 terminal spines ; telson rounded above, not sulcate, bearing, inclusive those near the tip, 8 pairs 

 of dorso-lateral spinules, that reach to the anterior third, while the tip is armed with 2 pairs 

 of spines. Outer uropod as long as the telson, inclusive the terminal spines, inner uropod a 

 little shorter. 



