424 Annals of the South African Museum. 



In other respects this species resembles C. sublevis. The young 

 (2 - 5-3 mm.) of the two species are difficult, if not impossible, to 

 separate except by the colouration, which seems quite distinctive. 



LcngtJk : 4-5 mm. ; breadth : 2-2 mm. 



Colour : Greenish or reddish brown ; in young specimens the 

 head, 1st peraeon segment and pleon (either the whole or only the 

 anterior portion) are dark, the intervening portion light, sometimes 

 a reddish band across the lighter peraeon segments ; the older the 

 specimens, the more they tend towards a uniform colouration. 



Locality : St. James, June, 1912 ; and Buffels Bay, 28/9/13 

 (both in False Bay). (K.H.B.) 2 $ $ ; Sea Point, near Cape 

 Town. 15/11/13. (K.H.B.) 33, $ ? and young from 2-5 mm. 

 in length upwards. (S.A.M. Nos. A2447, A2548 and A2607 

 respectively.) 



FAMILY IDOTEIDAE. 



For references see Stebbing, S.A. Crust, pt. 1, p. 51, 1900, and 

 pt. 2, p. 55, 1902. Also : Barnard, Ann. S.A. Mus. vol. x. pt. 7, 

 p. 203, 1914. 



GEN. PABIDOTEA, Stebbing. 



1900. Paridotea, Stebbing, S.A. Crust, pt. 1, p. 52. 



1909. Chilton, Subant. Is. New Zeal. vol. 2, p. G60. 



PARIDOTEA BETICULATA, n. sp. 

 (Plate XXXVI. D.) 



Body parallel-sided, smooth, not very convex. Head with frontal 

 margin concave with median notch, eyes irregularly round, black. 

 Peraeon with postero-lateral angles of segments 1-3 rounded, of 

 segments 4-7 subacute. Epimera of 2nd and 3rd segments narrow, 

 the former a little more than half the length of its segment, the 

 latter % length of its segment ; epimera of 4th to 6th segments as 

 long as their segments, their postero-lateral angles subacute ; epi- 

 meron of 7th segment a little longer than its segment, postero-lateral 

 angle acute. All the epimera are without lateral keels, the upper 

 surface passing into the ventral surface without a break. The sterna 

 of 4th-7th segments are quadrate, with postero-lateral angles rounded, 

 posterior margin ernarginate with (on 6th and 7th sterna) a small 

 median and a small submedian notch. Pleon nearly equal to the 



