's RIJKS MUSEUM VAN NA TUURLIJKE HISTORIE — LEIDEN. 165 



The ova-bearing female from Stat. 7 is 12 mm. long, the fall-grown 

 female from Stat. 273 17,7 mm. 



Ova 0,6 mm. long, 0,4 mm. thick. 



Pontophilus Kempii n. sp. 



Stat. 65a. Very near Station 65 (7° O'S., 120° 34.5 E.). Between the 

 islands of Saleyer and Tanah Djampeah. 300 — 400 m. Bottom pale, 

 grey mud, changing during haul into coral bottom. 1 male and 2 females 

 without eggs. 



Closely related to Pont, angustirostris n. sp. 



Rostrum reaching in the female (in the male it is broken off) beyond 

 the eyes to the far end of basal antennular article, very narrow, the 

 breadth in the middle being one-fifth the length in the mid-dorsal line; 

 the rostrum terminates in two slightly upturned lobes, that are truncate, 

 and its margins are, like the orbital margin that is entire, fringed with 

 long setae, concealing the eyes. There is in the mid-dorsal line a sharp 

 prominent carina, running from the posterior margin to the anterior fifth 

 and terminating, in the female, in a well developed spine ; in the male 

 the anterior extremity is blunt. On each side of it several carinae are 

 observed, that are all prominent and sharp. A long sub-dorsal carina 

 runs from nearly midway between the rostrum and the orbital spine 

 backward and slightly outward to near the posterior margin ol the 

 carapace; between this carina and that of the mid-dorsal line, on the 

 gastric region, two small prominences occur, situated behind one another, 

 and on the cardiac region in the male four carinae are observed, ar- 

 ranged in two pairs, the carinae of each pair unarmed and situated 

 behind one another; in the female there are here only three carinae, 

 the two of the inner pair being substituted by a single one. Below the 

 subdorsal carina, that ends in the female in a spine, but in the male 

 bluntly, still three carinae occur. The anterior, situated distinctly farther 

 distant from the subdorsal carina than from the posterior extremity of 

 the antennal crest, runs backward to the cervical groove and ends in 

 both sexes in a spine ; the second, twice as long, is placed immediately 

 behind the anterior, though just below it, runs to near the posterior 

 margin of the carapace and terminates also in a spine, that is, however, 

 smaller than that of the anterior; the third is unarmed and runs parallel 

 with the second. 



Abdomen resembling that of Pont, angustirostris, differing only in 

 minute details. 



Antennal scale presenting the same form in the male and in the 



