442 MARINE BIOLOGY OFiTHE SUDANESE RED SEA. 
and the hands bearing seven spines on the upper border. Of the antennal 
spines above named there are three on the right antenna, of which the 
middle one is very small, and four on the left antenna, of which the two at 
the orbital end are small, particularly the inner of the two. 
The line uniting the posterior teeth of the lateral border of the carapace is 
well marked, and the posterior gastric line is somewhat curved, with the 
convexity backwards, so that the general appearance of the lines on the 
carapace is as in A. Milne-Edwards’s figure of, 7. quadridens (A. Milne- 
Edwards, 1869, pl. 6. fig. 8). 
The part of the carapace anterior to the posterior gastric line is seen by 
the aid of a lens to be closely covered with small low granules. 
This appears to be essentially a Red Sea variety, and may perhaps come 
to be given specific rank. 
Genus PopopHtHaLMus, Lamarck, 1801. 
(Original orthography Podophtalmus, not Podophthalmus.) 
26. PopoPHTHALMUS VIGIL (Fabricius, 1798). See H. Milne-Edwards, 
1834, p. 467. 
Podophthalmus vigil, Nobili, 1906, p. 213. 
Locality. Station IV., 1 g juv. [69]. 
Remarks. C.l. 7 mm., C.b. including spines 14°5, frontal b. 2°5, lateral 
epibranchial spine 5, length of post. bord. C. 5, eye-stalk including eye 
6°75 mm. The specimen is thus very small, H. Milne-Edwards’s specimens 
were 2 to 4 inches in length. 
Both chelipeds are lost, but it appears clear that the specimen comes under 
the present species, agreeing in other points with H. Milne-Hdwards’s 
description (loc. cit.) and figure (H. Milne-Edwards, Cuv., pl. 9. fig. 1), 
except that the iwo pairs of antenne are of equal length, instead of the 
second being much shorter than the first pair. 
Family XANTHIDA. 
Genus Carpitius, Desmarest, 1825. 
27. CARPILIUS CONVEXUS (Forskal, 1775). See Alcock, 1898, p. 80. 
Carpilius convexus, Nobili, 1906, p. 214. 
Carpilius converus, Stimpson, 1907, p. 37. 
Locality. Station VII. A, 1 2 [70]. 
Remarks. C.J. 50 mm. 
The pitting of the carapace extends over the whole of the dorsal surface ; 
it is coarse inside the frontal and antero-lateral borders, less so in the middle 
region, and faint on the posterior slope. 
