32 Annals of the South African Museum. 



PENAEUS INDICUS, Milne Edwards. 



1837. Pe?iae?<si?^ic?*s,MilneEdwards,Hist.Nat.Crustaces,vol.2,p.415. 

 1906. Peneus indicus, Alcock, Catal. Indian Macrura, p. 12, pi. 1 



figs. 3, 3a (with synonymy). 

 1915. Penaeus indicus, Kemp, Mem. Indian Mus., vol. 5, p. 319. 



The specimens which I refer to this species have a thelycum 

 corresponding with that which Bate figures in the Ann. Nat. 

 Hist., ser. 5, vol. 8, pi. 12, fig. 5 vp., 1881. They are far 

 smaller than the length of about 6 in. with which Milne 

 Edwards, or 8 in. with which Alcock, credits the species, one of 

 them having a total of 64 mm., the other of about 60 mm., in 

 the former the carapace being 43'5 mm. long, in the latter 

 39 mm. The larger specimen has 7 dorsal teeth on the rostral 

 carina, the seventh very far from the apex, the ventral teeth 

 being 5 in number. Iii the other case there are 8 dorsal teeth 

 and only 3 widely spaced ventral. In each case 3 of the teeth 

 are behind the base of the eye-stalk. The characters answer to 

 Alcock's statement, " This is an extremely variable species, 

 especially in respect of the length of the rostrum, which in 

 young individuals projects far beyond the tip of the antennal 

 scales, whereas in adults it is often not longer than that of 

 P. monodon" In 1888 Spence Bate retains the species, but is 

 inclined to believe it an over-toothed variety of P. monodon, with 

 which he further identifies P. semisulcatus, de Haan. In 1892 

 de Man described and figured a variety longirostris, which he 

 retains in his " Siboga " treatise, 1911-1913. 



Our specimens have the fifth and sixth pleon segments 

 cariuate, the sixth of the same length as the telson, which is 

 longitudinally sulcate, acute at the apex, the sides setose but 

 without spines. In the smaller specimen the flagella of the first 

 antennae were 18 mm. long, but the flagellum of the second 

 antenna 140 mm., thus more than twice the length of the body. 

 The third peraeopod reached the extremity of the scale of the 

 second antenna, the fifth is longer than the fourth. 

 Locality. Untgeni Kiver, Durban. A 1191. 



GEN. SOLENOCEEA, Lucas. 



(See these Annals, vol. 15, pt. 2, p. 66, 1915.) 



SOLENOCEBA AFRICANUS, n. Sp. 



Plate XCIIlA. 



