460 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
Nobili. The lower border of the orbit is granular or crenulated in all the 
specimens, which was the case in Nobili’s examples. 
The carapace of 9 284 is asymmetrical and abnormal in regard to its 
antero-lateral teeth ; on its left side the second tooth is reduced to a slender 
spine and on its right side only two teeth are present. 
Genus TrApPEzIA, Latreille, 1825. 
52. TRAPEZIA CYMODOCE (Herbst, 1801}. See Alcock, 1898, p. 219. 
Trapexia cymodoce, Nobili, 1906, p. 292. 
Trapexia cymodoce, Laurie, 1906, p. 410. 
Grapsillus cymodoce, Rathbun, 1906, p. 865, pl. 11. fig. 6. 
Trapexia cymodoce, Rathbun, 1911, p. 234. ° 
Localities. Station I1..D,1 g [317]; Station V.D,1 2 juv. [318]; Station 
V.E,1 $ [319], 2 9 [320-321] ; Station VII. B, 3 g [432-434]; Station 
VIL D, 16 Ss 1322-835, 359, 360i, 15 2 336—349- 361] (Novas: 
Station IX. A, 1 ¢ [362]; no locality given, 3 g¢ [356-358], 9 2 [350— 
355, 363-365] (4 ovig.). 
Remarks. In all 52 specimens, except only the large ¢ 360, the outer 
division of the frontal lobe of each side is seen to be crenulated when 
examined through a lens. 
In most of the specimens a transverse line of rounded red spots is more or 
less evident on the carapace when carefully jooked for. In no case is this 
Fig, 2. 
Lrapezxia cymodoce. Dorsal view to show position of line of spots. 
line obvious to the naked eye at a casual glance, but on a more careful 
examination, especially with a hand-lens, it can be made out very completely 
in seventeen specimens (in ten of which, however, the colour appears to have 
faded, leaving the spots whitish), incompletely in seven, an inner pair of 
spots only in twelve, and not seen in sixteen. Of those specimens in which 
itis not seen twelve are quite small ; other small specimens, however, have it 
present. It appears as if the presence of the complete line is normal in the 
living condition and that the other less complete conditions represent stages _ 
in fading of spirit-specimens. Even in some of those described above as not 
showing it, traces were discovered on careful examination under a Zeiss 
