46 



I'll VI. I.U POD CKUSTACEA 



exhibit a jointed appearance. Tlie cercopods nf both se.xes are unusually wide at the base, 

 and are much flattened dorso-ventrall}-. In other resix;cts the two sexes appear to be essen- 

 tiall\- like the t\nical form. 



Figure 9. — Sircptoccphahis simplex hiigimaiitis. A, left hand of S from outside (X 13). B, head of 9 from in 

 front (X 11). C, end uf abdomen of $ from above (X 17.4). 



Strcl^tocc/'lialus siiiif^lrx arabicus n. subsj). 



Locality: South Ar.mua : Aden. 5 o' , 5 9, coll. G. \i. Hutchinson. 21-11-32. 

 Aden, 100 or more. Coll. C,. K. Hutchinson. 7-XII-32. 



*Aden?, 2 <5 S, 2 9 9, coll.? Date?, poor condition and of doubtful provenance, (|uite 

 possibly S. s. arabicus. 



Types: : Peabody Museum of Vale University. Paratypes in Indian Museum. 



Much like the t_\i)ical variety, but for the followint^: First aiUennae of l)(itli sexes 

 often appearing to be divided into 2 or more segments. Second antenna of 6 with 

 basal joints so much fused dorsally as almost, or completely to hide the short and ill- 

 developed frontal process of the head when viewed from above; with the outer 2 fleshy 

 processes of the 2nd joint nuuh reduced in size (one may be missing), and with the dorsal 

 row of sj)ines on the main branch of the finger not tending to run over onto the inner face 

 of the main branch distally. The finger-notch is well marked, and the proximal edge of it is 



