ADDENDA. 145 



Page 45, after Lethrinus nebulosus, add : — 



140*. Lethrinus striatus ? 



Lethrinus striatus, Steindachner, Verhandl. zool.-bot. Ges. Wien, 1866, p. 479, pi. 5. fig. 3. 



D. ™. A. §. L. lat. 45. L. transv. 5/14. 



Closely allied to Lethrinus nebulosus, but perhaps essentially different by the larger 

 size of the scales and of the head and coloration. 



Length of the head contained thrice and three-fourths in the total ; height of the 

 body a little more than thrice. Diameter of the eye nearly one-fourth of the head ; 

 length of the snout not quite one-half. Width of forehead nearly equal to the dia- 

 meter of the eye. Upper molar teeth somewhat larger than the lower. Dorsal spines 

 very strong, the fifth being the longest and contained about once and a third in the 

 length of the middle rays, or twice and a third in that of the head. The third broad 

 anal spine considerably longer than the two anterior ones, which also are very strong. 

 Pectorals and ventrals extending to the base of the first anal spine. Caudal moderately 

 emarginate, the longest rays being equal to the distance of the extremity of the snout 

 from the posterior margin of the orbit. 



A blackish-brown band across the middle of the forehead ; a second, arched ; one 

 from the middle of the front margin of the orbit to the middle of the snout. Bluish- 

 violet bands along the series of scales above the lateral line. (Steindachner.) 



Zanzibar. 



Page 53. 



175. Histiophorus brevirostris. 



Since the sheet containing the description of this species was printed, the typical 

 specimen, or rather the remains of it, consisting of the complete head, fins, and 

 portion of the skin, have been received at the British Museum. This has induced us 

 to reexamine it, and especially to compare it with Tetrapterus lessonii, described by 

 Canestrini in 'Archivio per la Zoologia,' 1861, vol. i. p. 259, pi. 7, which fish was 

 found in the Mediterranean. 



There cannot be a doubt that the two fish are extremely closely allied — so much so 

 that, had we not already given the Zanzibar specimen a new name, we should have 

 hesitated to separate the two. Besides the difference of habitat, however, there are 

 others which may tend to prove their real distinctness. The head of the Mediterranean 

 species is comparatively longer, the anterior part of the dorsal much higher, and the 

 pectoral longer. There are also differences in the number of fin-rays. The Zanzibar 

 specimen has D. 38 | 7. A. 12 | 7 ; that from the Mediterranean D. 44? | 7. A. 



171* | 6. 



* Is this number not a misprint ? The' figure indicates 12 only. 



U 



