8 Carl Bovallius, 



lar base of the globe, at the under-side of the body, is formed and bor- 

 dered by the head and the six first pereional segments; the sixth seg- 

 ment forms the posterior border of it, but is not inflated and does 

 not participate in the forming of the globe. 



The first pair of pereiopoda [= gnathopoda, Spence Bate] [PI. III. 

 fig. 21]. The femur is broad, nearly ovate, with some hairs at the 

 lower, hinder corner; it is a little more than twice as long as broad 

 (45: 19). The genu is short, scarcely a fourth of the length of the fe- 

 mur, with some long hairs at the hinder margin. The tibia^ about as 

 long as the preceding joint, is bordered with long hairs at the under-mar- 

 giu. The carpus equals three fifths of the length of the femur, and is 

 slender, linear, richly provided with hairs at the hinder margin. The 

 metacarpus is shorter than the preceding joint (10: 13), beset all around 

 with slender hairs; the tip projecting into a short tooth on the anterior 

 side of the dactylus. The 'lactylus is straight, very delicate, equalling 

 only a fourth of the length of the metacarpus. 



The second 'pair of pereiopoda [= gnathopoda, Spence Bate]. [PI. 

 III. fig. 22]. The epiiaeral is long, with rounded corners, not occupying 

 the whole segment. The femur is laminar, narrower than the femur of 

 the first pair, thrice as long as broad, with a few hairs at the lower 

 hinder corner. The genu and tibia as in the preceding pair. The carjms 

 is shorter than half of the femur, with only a few hairs at the lower 

 end. The metacarpus is longer than the carpus (6: 5), beset with hairs, 

 the tip projecting into a tooth as in the first pair. The dactylus is 

 short and nearly straight, it equals only a sixth of the length of the 

 preceding joint. The branchial sack is half as long as the leg, the 

 ovic/erous lamella equals nearly the whole length of the leg. 



The third pair of pereiopjoda [PI. III. fig. 23] are the longest of all. 

 The epimeral is very large, deep, rounded, not occupying the whole 

 length of the segment. The femur is long and narrow, four times as 

 long as broad, without hairs or bristles; it is longer than the three fol- 

 lowing, the lower part is a little broader than the upper. The genu is 

 short and smooth; the tibia is long and broad, coarsely serrated at the 

 hinder margin and carrying some short bristles. The carpus is longer 

 than the preceding joint (8: 5); it carries three bristles and some hairs 

 at the hinder margin. The metacarpms is very slender, shorter than the 

 carpus (11: 16), provided with some very short bristles; in the interior 

 of the joint is a long thin gland, containing a fine granular substance, 

 but without visible ductus. The branchial sack is half as long as the leg, 

 the ovigerous lamella is only a third shorter than the leg [PL III. fig. 25]. 



