480 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
20. HALICAMPUS MACRORHYNCHUS, n. sp. (Plate 46. fig. 4.) 
Male unknown and position of brood-pouch therefore uncertain, but 
agreeing in all other respects with Duncker’s diagnosis of the genus 
Halicampus (Jahrb. Hamburg. Wissensch. Anst. xxix. 1912, p. 236). 
Similar in form to Halicampus koilomatodon, Bleek., differing notably as 
follows :— 
(1) Snout much longer, 12 rest of head. 
(2) Rings fewer, 14+ 27. 
(3) Dorsal fin with 18 rays on 1+3 rings. 
(4) Keels of scutes mostly entire or incompletely divided into two; 
not definitely serrated. 
A single specimen, 2, 112 mm. in length, from Suez. 
21. DorRYRHAMPHUS EXCISUS, Kaup. 
22. HIPPOCAMPUS GUTTULATUS, Cuv. 
23. HIPPOCAMPUS HISTRIX, Kawp. 
HOLOCENTRID. 
24, HoLOCENTRUS RUBER (Forsh.). 
SERRANID. 
25. HPINEPHELUS HEMISTICTUS (Adpp.). 
26. EPINEPHELUS TAUVINA (forsk.). 
27. PsHUDOCHROMIS OLIVACEUS, Riipp. 
CHILODIPTERID ©. 
28. APOGON ANNULARIS, fiipp. 
29. APoGoN AURITUS (Cuv. § Val.). 
30. APOGON VARIEGATUS (Val.). 
CARANGIDAL. 
31. CARANX ARMATUS (Forsk.). 
32. CARANX BLEEKERI, Klunz. 
LUTIANIDA. 
33. LuTIANUS GIBBUS (Forsk.). 
34. Lurranus Bonar (forsk.). 
A single specimen, with the two white spots at base of dorsal very distinct. 
Giinther (Cat. Fishes, vol. i. p. 191) says these spots disappear after death. 
