1906.] ox ALCYOXARIAN FROM ZANZIBAR. 393 



spots ; upper part of head and body with irregular spots ; an 

 oblong spot on the lower part of cheek and a triangular spot on 

 the operculum ; a series of 3 or 4 linear spots along the middle of 

 the side ; a spot at the base of caudal ; series of small spots on 

 the dorsal and caudal fins. 



Four specimens, 70 mm, in total length, from Trinidad. 



I believe this must be the species described by Dr. Gill as 

 Ctenogobius fasciatus, although he gives the number of fin-rays as : 

 Dorsal Y, 11 ; Anal 10. 



40. Chonophorus baxaxa C. & Y, 

 Sab. Tropical America. 



41. EVORTHODUS BREVICEPS Gill. 



JIab. Trinidad; Surinam. 



EXPLANATION OF THE PLATES. 

 Plate XXI. 



Fig. 1. Tetragonopterus ciuppyi, p. 384. 

 2. Saplochilus harti, p. 389. 

 8. Curimatus argentev,s, p. 385. 



Plate XXII. 



Fig. 1. G-irardimis guppyi, $. la. $,p. 390. 



2. Cliirodon pulcher, p, 385. 



3. Corynopoina riisii, (J . 3 a. ? , p. 382. 



4. Tetragonopterus tteniurus, p. 383. 



5. Tetragonopterus unilineatus, p. 384. 



Plate XXIII. 

 Farauclienipterus pasem, 13. 387. 



Plate XXIV. 

 PseiulaucJienipte7'ics giippyi, p. 387. 



Plate XXV. 



Fig. 1. Acara pulclira, p. 392. 



2. Polycentrus schomhurgkil, p. 391. 



2. The Marine Fauna o£ Zanzibar and British East Africa, 

 from Collections made by Cyril Crossland, M.A., B.Sc, 

 F.Z.S., in the Years 1901 and 1902.— Alcyonaria. By 

 Prof. J. Arthur Thomson, M. A.,UniA^ersity of Aberdeen, 

 and W. D. Henderson, M.A., B.Sc, Carnegie Fellow, 

 University of Aberdeen. 



(Plates XXYI.-XXXI.* and Text-figure 85.) 



This report deals with the Alcyonarians in the rich collection 

 of marine animals made by Mr. Cyril Crossland at Zanzibar in 

 1901-2. The Alcyonarians'^are mostly littoral forms, e. g. species 



* For explanation of the Plates, see p. 442. 



