The Sympoda. 137 



The upper lip is emarginate. The mandibles have the basal 

 section longer than the part on the other side of the strong molar ; 

 a spine-row of twenty-one spines leads on to a very narrow cutting 

 plate, which in one mandible is accompanied by a narrow accessory. 

 In Hansen's B. elongatus the basal section of the mandible is, con- 

 trary to custom, shorter than the spiniferous portion. The first and 

 second maxilhe are normal. 



The first maxillipeds have a long second joint, the third missing, 

 the fourth and fifth broad, closely united, the fifth fringed with a 

 row of eight bifid teeth, the two following joints small; the branchial 

 apparatus with eight leaflets agrees better with Hansen's account 

 for B. elongatus than with Bonnier's figure and description of this 

 part in his Vaunthompsonia cceca. The second maxillipeds have 

 a slender, sinuous, strongly ridged second joint twice the length of 

 the rest of the limb, with the third joint scarcely forming a complete 

 ring, instead of a joint twice as long as broad as represented in 

 Bonnier's figure. The third maxillipeds have the second joint 

 well produced and serrate on inner side of the apical process, but 

 without the strong armature of spines described by Norman for 

 his species. After the small third joint the rest of the limb is 

 missing. 



The first perseopods were available only to the end of the second 

 joint; the exopod has a remarkably broad basal joint, the flagellar 

 part having a first joint not very long, but succeeded by no less 

 than seven short joints. The second pergeopods have the second 

 joint serrate, the third short, the much-spined seventh about as 

 long as the fifth with the little sixth. 



The pleopods have the peduncle little longer than the subequal 

 rami, the one-jointed endopod with its lateral process little produced 

 across the two-jointed exopod, of which the second joint, like the 

 endopod and peduncle, is amply provided with setae. 



The exopod of the uropods is about three-fourths as long as the 

 peduncle, and has eight slender spines on its inner margin. The 

 scarcely shorter endopod is fringed with about seventeen little 

 spines and four larger on the inner margin of its large first joint : 

 the much thinner second joint, more than half as long, has a dozen 

 little spines on the inner margin, on which the peduncle has a varied 

 assortment of a score. 



Length of male 11 mm. Female unknown. 



Locality. Cape Natal N. by E. 24 miles ; depth 805 m. ; No. 

 12605, sent by Dr. Peringuey. 



