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Show 1899.] FllOM THE GOLO COAST. 717 (Haplochilus infra-fasciatus, Petersius), but also because it has to a more critical revision of the Gaboon species of Chrysichthys, which are more numerous and more difficult of discrimination thau I was formerly inclined to admit. The specimens were collected at the following localities:- 1. On the Biver Prah, which falls into the sea at Chama, lat. 5°, long. 2° 30' ; a tortuous river with numerous small rapids separated by sluggish pools, its course being chiefly in the Denkera country. 2. On the River Offim, one of the most considerable affluents of the Prah, and very similar to it: its course is through the Ashantee country. 3. On the River Kotchwah, a tributary of the Emissa, which also falls into the sea a little east of Saltpond. 4. On the Sweet River or Kakum, a small river falling into the sea between Elmina and Cape Coast Castle. Ordinary maps give only an indistinct indication of these rivers, and Miss Kingsley informs me that their topography is all the more perplexing, as most of the rivers have two names, one in the Ya, and the other in the Pantee language. CHEOMIS OGOWENSIS. Chromis ogowensis, Giinth. Ann. & Mag. N. H. 1896, April, p. 271. I refer two specimens from the Prah River, two from the Kotchwah R., and three from the Kakum R. to this species. They show only some insignificant differences in the general form of the head. All possess 8 anal rays. The formula of the dorsal fin is ±-f in five specimens, and -{-§• and \± in two, both these latter specimens coming from the Kakum R. In all the teeth are numerous, viz., from 25 to 29 on each side of the upper jaw. Number of gill-rakers on the outer branchial arch from 13 to 17. HEMICHBOMIS TERSQUAMATUS, sp. n. (Plate XL1I. fig. B.) D. -ff A. f. L. lat. 28. L. transv. 3/10. Teeth in a double series, those of the inner being minute and rudimentary. The height of the body is contained 2\ times in the total length (without caudal), tbe length of the head 2| times. Snout with tbe upper profile straight. Eye a little nearer to the end of the operculum than to that of the snout, and contained IS times in the length of the latter. Interorbital space barely wider than the orbit. Maxillary not reaching to the vertica from the orbit. Cheek with three series of scales. Gill-rakers short and transverse, 11 on the lower branch of the outer arch. Posterior dorsal spines very little longer than the middle ones, the last being two-fifths of the length of the head. Pectoral about as long as ventral, which reaches to the vent. Caudal rounded. Caudal peduncle a little deeper than long. Scales smooth. Bodv with traces of five broadish dark cross-bands, which are darkest in the middle of the body, where they have the |