430 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
Aleock’s description reads obscurely as regards the spines of the anterior 
border of the carapace ; there are five spines on the fronto-orbital border, as 
he describes, but the spine forming the antero-external angle of the carapace 
on either side is not the outermost of the above series but an additional one, 
making a series of seven spines in all along the anterior border of the 
carapace. This is seen quite clearly in de Haan’s figure (1841, pl. xxxv. 
fig. 5). It is presumably also not the ischium but the merus of the chelipeds 
which Alcock intends to describe as trigonal, somewhat swollen, and having 
its outer surface tattooed with linear dents with hairy edges. 
This is the first record of any member of the family Raninidee from the 
Red Sea. 
Subtribe BRACHYGNATHA. 
Superfamily Ox YRHYNCHA, 
Family MAMAIIDA. 
= Maiide, see Stebbing, 1905 (1) p. 22, and 1910, p. 290. I use the word, however, in 
its wider sense, not as = Alcock’s Maiine. 
Genus CamposciA, Latreille, 1829. 
10. Camposcia RETUSA, Latreille, 1829. See Alcock, 1895, p. 184. 
Camposcia retusa, Nobili, 1906, p. 172. 
Camposcia retusa, Klunzinger, 1906, p. 15, pl. 1. fig. 1. 
Cumposcia retusa, Laurie, 1806, p. 371. 
Camposcia retusa, Stimpson, 1907, p. 19. 
Locality. Station V. E, 1 9 ovig. [35]. 
Remarks. C.l. 34 mm. It is encrusted, as is usual in this species, with a 
very considerable quantity of sponges, etc. 
Genus AcantTHonyx, Jatreille, 1829. 
11. AcANTHONYX ELONGATUS, Miers, 1877. Sce Miers, 1877, p. 673, 
pl. 69. fig. 1. 
Acanthonyx elongatus, Nobili, 1906, p. 172. 
Acanthonyx elongatus, Klunzinger, 1906, p. 22. 
Acanthonyx consobrinus, Paulson, 1875, p. 7, pl. 3. fig. 1 (nec A. consobrinus, A. M.- 
Edw., 1863) ; fide Klunzinger, loc. cit. 
Locality. Station IX. B, 1 g probably immature [36]. 
Remarks. C.l. including rostrum 22°5 mm. 
It differs from Miers’s description and figure in (a) the tubercles of the 
carapace, there being three on the gastric region, one on the cardiac region, 
a small one on either side of the cardiac region and a trace of one on the 
intestinal (post-cardiac) region ; (+) the small middle tooth of the lateral 
border of the carapace is more distinct than in Miers’s figure and so also are 
