450 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
Genus Paymoptius, A. Milne-Hdwards, 18€3. 
43. Puymopius uncuLatus (H. Milne- Edwards, 1834). See Alcock, 1898, 
p- 162. 
Phymodius ungulatus, Nobili, 1906, p. 264. 
Phymodius ungulatus, Nobili, 1907, p. 129. 
Phymodius ungulatus, Rathbun, 1906, p. 857. 
Phymodius ungulatus, Borradaile, 1902 (2), p. 209. 
Phymodius monticulosus, Alcock, 1898, p. 163. 
Phymodius monticulosus, Nobili, 1906, p. 264. 
Phymodius obscurus, Rathbun, 1906, p. 858. 
Locality. Station VII. D, 10 g [179-188], 6 ? (1 ovig.) [189-194]. 
Remarks. & C.1. varies from 4:25 to 6°55 mm.; @ ovig. C.l. 5mm. 
In five of the males the right, and in five the left, chela is the larger. 
The specimens fall under Alcock’s description of P. ungulatus. 
Regarding the inclusion of P. obscwrus (Lucas) (=P. monticulosus (Dana)) 
under P. ungulatus, see Borradaile, loc. cit., but also Nobili, 1906, loc. cit. 
44, Puymopius scunptus (A. Milne-Edwards, 1873). See Alcock, 1898, 
p- 164. 
Phymodius sculptus, Nobili, 1906, p. 265. 
Localities. Station VII. B, 1 g [195]; Station IX. A, 2 ¢ [196, 197], 
5 @ [198-202]. 
Remarks. The specimens show growth-change in regard to the condition 
of the antero-lateral lobes. In the two smallest specimens, ¢ 198 (C.l. 3°9 
mm.) and ? 199 (C.l. 4:3 mm.), all four lobes are produced into procurved 
spines ; in ? 200 (C.l. 4-7 mm.) the three most posterior lobes are produced 
into procurved spines; and in all the remaining five specimens with C.l. 
ranging from 7 to 9°25 mm. the last two only of the lobes are so produced. 
C.]. of these last five specimens is as follows:—¢ 7 mm.; 2? 7:5 mm. ; 
6 825 mm.; 6 9mm.; 6 195, 9°25 mm. 
In ¢ 195 the right, and in the other two ¢ specimens the left, chela is the 
larger. 
Genus CHLoropopsis, A. Milne-Edwards, 1873. 
45, CHLORODOPSIS ARABICA, n. sp. (Plate 42. figs. 1-1); Pl. 48. figs. 2, 
4 a—4. d.) 
Localities. Station V. HE, 3 g [203-205]; Station VI. 1 ¢ [212]; 
Station X.1 ¢ [206], 4 9 [207-210]; no locality given, Crossland’s label 
reads “‘ A part of the fauna of two dead valves of M. margaritifera which 
were covered by sponges etc. and supported a regular microcosmos of life,’ 
1 ? adult non-ovig. [211]. 
Description of & 203.—The entire carapace is cut into distinct arevle,- 
isolated by broad fairly deep channels. All the areole are granulated: those 
