HALIPORUS SIBOGAE. 139 



Station 256. Lat. 5°26'6 S.; loug. 132°32'5 E. 

 Depth 397 M. 



Carapace, abdomen and some appendages thickly covered 

 with a close tomentum of very short, curved setae. Ros- 

 trum, as in Halip. curvirostris Sp. Bate, falciform, just 

 reaching beyond the 1st joint of the antennular peduncle, 

 sometimes to the middle of the 2°'ï, upper margin at first 

 ascending, curved downward beyond the middle ; in addi- 

 tion to one small epigastric tooth the upper margin car- 

 ries 6, sometimes 7, rarely 8 teeth, whereas one observes 

 usually one, sometimes two teeth on the concave lower 

 edge near the tip. Behind the epigastric tooth the carapace 

 is rounded. Spiny armature and grooves on the sides of 

 the carapace as in Halip. diomedeus (Faxon) ; cervical groove 

 well impressed, interrupted by the dorsum of the carapace, 

 terminating just near the small branchiostegal spine at 

 the antero-inferior angle of the carapace. Three first ab- 

 dominal terga rounded, the three posterior carinate; telson 

 little longer than Q^'^ somite, with one pair of small spines 

 near the pointed tip. Endopodite of caudal fan reaching 

 far beyond the tip of the telson, outer branch reaching 

 as far beyond the tip of the endopodite. 



Eyes large, reuiform. Antennular flagella filiform, of 

 subequal length, both considerably longer than the body, 

 as in Halip. diomedeus. 



Second joint of mandibular palp little more than half 

 as long as the proximal joint and much narrower. First 

 pair of legs with a minute spinule at the base and at the 

 far end of the ischium, merus with 4 or 5 small spinules 

 along its lower margin. Legs of the 3rd pair hardly 

 reaching beyond the antennal scales, carpus, like that of 

 the 2"*^ pair, little dilated proximally, once and a half as 

 long as the merus. 



Fourth pair almost as long as the 3rd, which it does 

 not surpass ; carpus a little shorter than the merus. Fifth 

 pair filiform, much longer than the 4tli legs, reaching 

 with half their propodites or somewhat more beyond the 



Notes from the Leyden Museum, Vol. XXIX. 



