OCR Text |
Show 330 DR. A. GlJNTHER ON [Nov. 18, Several specimens of this species, originally described from Cameroon. The largest measures 190 millim. Depth of body 14 to 17 times in total length, length of head 8\ or 9 times. Length of head 4 to 4| times in distance from snout to vent, Ik to twice as great as its distance from first dorsal spine; a prseorbital and 2 or 3 prseopercular spines. Dorsal X X V I I I -X X X I , 110-130; anal II, 110-130. The coloration varies : some specimens are nearly uniform brown, with an ill-defined darker lateral band, others are spotted with darker or with lighter ; a series of alternating dark and light bars may be present at the base of the anal fin. EXPLANATION OF THE PLATES. P l a t e X X V I I I . Fig. 1. Protopterus annectens, young, p. 325. 2. Petrocephahis ansorgii, p. 325. 3. Barbus nigeriensis, p. 327. P l a t e X X IX . Fig. 1. Synodontis melanopterus, p. 327. 2. Pelmatochromis pellegrini, p. 328. 3. Mastacembelus loennbergii, p. 329. 3. Last Account of Fishes collected by Mr. R. B. N. Walker, C.M.Z.S., on the Gold Coast. By Dr. A. G u n t h e r , F.R.S., Y.P.Z.S. [Received November 7,1902.] (Plates X X X .-X X X I I I .1 & Text-fig. 62.) Shortly after the publication of my previous paper on Fishes from the Gold Coast (Proc. Zool. Soc. 1899, pp. 716-732), Mr. Walker paid another visit to that district. On this occasion he travelled into Asliantee, visited Lake Busum-chi, and followed the River Enon on a portion of his return journey. He did not long survive the fatigues of this, his last, voyage. It was his intention to supply me with full particulars as regards the stopping-places at which he obtained the fishes ; and I was all the more anxious to obtain this information, as some of the places are small and not important enough to be shown on any of the most recent maps of the country. Fortunately he was careful in labelling the bottles with the names and sometimes with the positions of the localities, although not always in a very legible manner; and supplementing this source of information with what I can gather from his letters, I am able to supply the following list :- 1. River Atesu, 2. River Ibbi, and 1 For explanation of the Plates, see p. 339. |