MACRUROUS DECAPODA OF THE SUDANESE RED SEA. 349 



C. Engineer Island. Lat. 20° 50' N. Washed from old 



coral and weed obtained from Reef Flat. 



D. Engineer Island. Lat. 20° 50' N. Washed from weed 



and coral dredged in 3 fathoms of water. 



E. Khor Dongonab. Among coral on reef. 



F. North of the Barrier (see Grassland's map, p. 15), 20 



fathoms. Mud. 



G. Washed from ribbon-like sponge characteristic of the 



nullipore beds. 



VI. Mersa Ar-rakiya. Lat. 20° 15' U N. Among coral in one fathom of 



water. 



VII. Suakin Harbour. Lat. 19° 8' N. 



A. Suakin Harbour. 



B. Suakin Harbour. 26 Jan., 1905. 



0. Suakin Harbour. From coral, 1905. 



D. From ascidians and barnacles of buoy moored in Suakin 



Harbour. 



E. Washed from sponges. 



F. „ „ ., 11 Jan., 1905. 

 Gr. Commensal in Black Pinna. 



VIII. Shubuk. Lat. 18° 52' N. to 18° 43' X. 



A. Mersa Makdah in Shab-ul-Shubuk. 



B. We Shubuk, south-east corner. 16 Feb., 1905. 



C. "Dredge washings, 17 Feb., 1905.*' 



IX. Telia Telia Kebira, a small group of islands in the northern part of 



the Suakin Archipelago. Lat. 18° 48' N. 



A. Telia Telia Kebira. Washed from the half-loose coral 



fragments and nullipore which compose the edge of the 

 Southern Reef. 3 March, 1905. 



B. Telia Telia Kebira, From sand. 



X. Trinkitat Harbour entrance. Lat. 18° 40' N. 2 fathoms. Rock, 



weed, and nullipore. 



XL Agig. Lat. 18° 13' N. From among coral in 4£ fathoms of water. 



The distribution of the species in the present collection amono- the above 

 stations is set forth in the following table, from which it will be seen that 

 the coral reefs at Khor Dongonab and Suakin Harbour were by far the most 

 productive in species. 



