241 



the obtuse tip, a characteristic indentation, that looks like a contusion : in the full-grown 

 female the two indentations occur on the right scale at the same level, on the left the indentation 

 of the outer margin is a little farther distant from the tip than that of the inner and also in 

 the other specimens the position is not always the same. 



The external maxillipeds reach in the male and in the younger female from Stat. 76 

 just beyond the antennal scale, in the other specimens to the tip. 



The peraeopods of the i st pair reach, with the dactylus extended, to the middle of the 

 antennal peduncle. The legs of the 2 nd pair reach in the male by the chela and one-sixth the 

 carpus beyond the antennal scale, in the full-grown female they are damaged, but in the younger 

 female from Stat. 76 by the chela and one-fourth of the carpus and in the youngest specimen 

 they reach only to the tip; the 2 nd legs are decidedly shorter than any of the three posterior 

 legs. The latter (Fig. 60c, 6od, 6o<? and 60 ƒ ) resemble those of Glyph. Sibogae. 



Eggs few in number, large, greatest diameter 3,5 mm. 



The largest specimen, the ovigerous female from Stat. 76, is 86 mm., the male from 

 Stat. 208 jt, mm. long from tip of rostrum to tip of telson. 



Glyph. vicaria Faxon apparently differs from this new species by the following. The 

 upper surface of the rostrum is corrugated and the rostrum is constantly longer. The tubercles 

 of the dorsal and subdorsal crests are more prominent and spiny. The anterior moiety of the 

 4 th crest is divided by a deep notch. The tubercles of the abdomen are probably more sparse 

 and less pronounced, the dorsal carinae of the telson, finally, are dentate anteriorly. 



Glyph. longirostris (S. I. Smith) differs by the upper surface of the rostrum being corrugate, 

 by the orbital spine being directed much more outward and by the anterior moiety of the 4 Ul 

 or lateral crest being continuous, not notched, the dorsal carina and the tubercles of the abdomen, 

 finally, are obtuse, not carinate. 



9. Glyphocrangon (Plastocrangon) caeca W.-Mas. PI. XX, Fig. 61. 



Glyphocrangon caeca J. Wood-Mason, Annals Mag. Nat. Hist., Nov. 1891, p. 358. 

 Glyphocrangon (Plastocrangon) caeca A. Alcock, A descript. Catalogue Indian Deep-Sea Crus- 



tacea, Calcutta, 1901, p. 135. 

 Illustrations of the Zoology of the Investigator, Crustacea, Plate VII, fig. 1. 



Stat. 170. Aug. 26. 3° 37.7 S., i3i°26'.4E. Betvveen Ceram and New Guinea. 924 m. Bottom 

 fine grey mud. 1 adult male. 



Measured in the middle line, the rostrum proves to be 10 mm. long, the carapace 

 14 mm., the abdomen 37 mm., entire length 61 mm.: the largest male, hitherto known, was 

 53,5 mm. long, the largest female 64 mm. In our specimen the rostrum measures almost 

 three-fourths the length of the rest of the carapace and appears thus comparatively a little 

 longer than in the Indian specimens; the three proximal fourth parts are slightly directed 

 downwards, the distal fourth upcurved, though not yet reaching the level of the upper border 

 of the carapace. The median ridge, traceable to the faint rostro-gastric groove, is anteriorly 

 not elevated above the lateral margins and bears anteriorly at either side 5 or 6 deep pits, 

 that do not occur on the distal curved part nor reach backward to the anterior pair of spines. 



SIBOGA-EXPED1TIE XXXIX a\ -,l 



