MACRUROtfS DECAPODA OF THE SUDANESE BED SEA. 367 



Genus TrachypeNjEus, Alcock. 

 Trachypen^us anchoralis (Spence Bate, 1888, p. 258, pi. 35. fig. 1). 



T. anchoralis, De Man, 191] a, p. 88, pi. 8. fig. 28. 

 Metapenatus cwvirostris, Nobili, 1906«, p. 20. 



Locality. Station VIII. A, 1 <$ , 48 mm., and 1 ? , 67 mm. 



Remarks. Trachypenccus mrvirostris of Stimpson is the type species of 

 the genus, and T. anchoralis (Spence Bate) was regarded by Alcock as a 

 synonym. The researches of Kishinouye and Do Man have demonstrated 

 that the two forms are distinct and may be recognized by the form of the 

 petasma and thelycum. My specimens are in substantial agreement with 

 the descriptions and figures of Spence Bate and De Man, of specimens which 

 both authors attribute to T. anchoralis. 



I think there can be little doubt that the specimens recorded as Metapemcus 

 curvirostres by Nobili are to be referred to T. anchoralis. 



Previously recorded from the Red Sea at Massaouah by Nobili, 1906. 



Genus Pen^us, Fabricius. 



Pen^us semisulcatus, De llaan, 1849, p. 191, pi. 46. fig. 1. 

 See De Man, 1911 a, p. 97, pi. 9. figs. 31 a-b. 



Locality. Station V. F, 1 ? , 160 mm. 



Rem irks. This specimen agrees exactly with De Man's redefinition of this 

 species, and I am in agreement with his suggestion that the P. monodon of 

 Alcock is synonymous with this form. Nobili has recorded this species from 

 the Red Sea under the name P. ashiaka, Kishinouye, which De Man regards 

 as synonymous with P. semisulcatus, De Haan. Other records from the Red 

 Sea include those of Paulson (1875) and De Man (1880). (Jolosi (1918), 

 however, says that Paulson's records refer to P. carinatus, Dana. 



Pen^eus japonicus, Spence Bate, 1888, p. 245, pi. 31, pi. 32. fig. 4, and 

 pi. 37. fig. 2. 



See De Man, 1911a, p. 107. 



Localities. Station I. E, 6 ? , 160-185 mm. Station VIII. A, 2 ^ , 62 

 and 72 mm., 1 ? , 66 mm. 



Previously recorded from the Red Sea by Nobili. 



