Crustacean Fauna of South Africa. 217 



in cue 18 mm. long there is a small but deep notch just proximal to 

 the tooth near the hinge. 



Length : d 22 mm., ? 18 mm. 



Colour : Whitish, eyes black. 



Locality : Lambert's Bay, Clauwilliain Div. February, 1898. (R. 

 Pattison.) 1^,2??: Kommetje (Atlantic coast, Cape Peninsula). 

 1897. (Dr. W. F. Purcell.) $ <$; Atlantic Coast, near Cape of Good 

 Hope. 29/9/13. (K.H.B.) J <$ , ? ? and young. (S.A.M. Nos. 10018, 

 A235, and A2532 respectively.) 



TALORCHESTIA ^UADBISPINOSA n. sp. 

 (Plate XXVII. Figs. 29-32.) 



1836. Orchestia fisclierii Guerin, Iconogr. ou Regne Anim. pi. 26, fig. 3, 



and 1843. Explication des Planches, 

 p. 22. (non M. Edwards. ? 1828 and 

 1830.) 



1910. Orchestoidea ,, Stebbing, Gen. Cat. S.A. Crust, p. 459. (non 



M. Edwards.) 



Bearing a strong superficial likeness to Orchestoidea fischerii 

 (M. Edw.) 



Body broadly rounded, not compressed. Eyes subrotund, their 

 distance apart dorsally equal to or less than their greatest diameter. 

 Anterior lobe of 5th side-plate as deep as 4th side-plate, length of 5th 

 not greater than that of two peraeon segments. 



Pleon seginents 1 and 2 each with 2 (not 3 as in M. Edwards' 

 species) medio-dorsal upstanding spines in adult ^, obscure in im- 

 mature males, segment 3 with 2 very obscure tubercles, pleon unarmed 

 in ? , segments 4 and 5 not scabrous (as they are in 0. fischerii 

 M. Edw.), postero-inferior angle of 3 quadrate, acutely but slightly 

 produced. 



Telson about as broad as long, apex with a very shallow emargination 

 in the adult only, in immature specimens apex subacute, upper surface 

 with numerous spines. 



First antenna, 1st and 2nd joints subequal, 3rd a little longer, 

 flagellum equal to 3rd joint, 6-jointed in ^ , 5 in ? , reaching just 

 beyond end of penultimate peduncular joint of 2nd antenna. 



Second antenna, ultimate joint equal to penultimate plus antepen- 

 ultimate, which are subequal, all three joints spinose, penultimate 

 with 2 transverse rows of spines on dorsal surface as well a,s an apical 



15 



