76 Annals of the South African Museum. 



length, the first longer than both combined ; the flagella, not abso- 

 lutely perfect, show a length of about 40 mm. for the stouter, and 

 about 30 mm. for the slighter, the small third flagellum which sepa- 

 rates from the former, has a free course of about 22 joints, together 

 equal in length to the first joint of the peduncle. 



The incisor process of one mandible shows 4 teeth, that of the 

 other only 3 ; the palp is very slender, the third joint longer than 

 the first and second combined. The inner lobe of the apical plate or 

 palp of the first maxillae is armed at the inner corner with a little 

 spine which is twisted outwards, but this and various other details 

 of the mouth-organs occur similarly in L. affinis. At the apex of the 

 third maxilliped that species has a single strong spine, where the 

 present specimen has two such spines, but the variation may be a 

 casual one. 



In the first peraeopods the fifth joint is nearly twice as long as the 

 chela ; in the second pair the fingers are about five-sixths the length 

 of the palm. 



The specimen, a female laden with eggs, had a total length of 

 66 mm., the carapace with rostrum accounting for 23 mm., and the 

 telson for a little over 8 mm. 



Locality. 33 49' S. lat., 25 56' E. long. A 1276. 



The specific name is given as a mark of respect to Dr. Peringuey, 

 Director of the South African Museum and Editor of these Annals. 



LEANDER GILCHKISTI, n. sp. 

 Plate LXXXII. 



This species differs, so far as I can find, from all other forms in the 

 genus by having a good-sized distal tooth both on the dorsal and 

 ventral margins of the rostrum, advanced nearly as far as the 

 slightly upturned acute apex ; there are in all 7 dorsal teeth, the 

 hindmost situated on the carapace a little remote from the next, 

 which is slightly behind the base of the orbit ; the three anterior are 

 a slightly larger group than the three behind, and correspond 

 pretty precisely with the three ventral teeth. The telson is in 

 very close agreement with that of L. peringucyi, but the apex is 

 more abruptly narrowed, and the accompanying plumose setae are 

 shorter instead of longer than the two long spines between which 

 they extend. All four dorsal spines ai'e present, but, as the figure 

 shows, not symmetrically arranged, those on the left being wider 

 apart than those on the right. 



