144 Cockerelt — The Scales of the African Cyprinid Fishes. 



In B. iileo there are two rows of round spot? along the side. Tlie 

 upper row, of larger spots, alternates witli the lower. B. ijuttahis 

 has spots much as in B. tilro, and B. barila has ohscure spots of 

 the same sort. B. oruatus has indications of the same spots. 



B. gatensis has hars in place of the spots; B. canarevsis ii^ o])- 

 scnrely harred. B. ?ooii and near//" have vertical hars; B. uhamj- 

 ensis looks like nearii. B. moorii has rather ol)Scure vertical hars. 

 B. hingsleyx has dusky lateral spots. B. sardclln is a slender 

 species with easily deciduous scales. B. niloticus has the hack 

 dusky and the sides silvery, without hars or spots. Dr. Boulenger 

 writes me (Dec, 1009) that he has now removed B. sardclla from 

 Barilius "and placed it, also with the Neohola, under the name of 

 Engranlicypris Giinther." As I have remarked ahove, the scales 

 are very similar to those of Neohola argentcn. The lateral circuli 

 terminate ol)li(|uely, alxiut the middle of the side, herein diftcriug 

 very conspicuously from those of ]>. ubaugcnsis and nearii, which 

 are placed in the same division in the tahle. 



Pelotrophus Giinther may lie taken to include T>. mirrolepis 

 and B. microccphalus of Lake Nyassa, constituting a subgenus, I 

 suppose. 



Opsaridium Peters, type B. zambesensis Peters, I d(i not know. 



PachyHtoiiuis Heckel ini'ludes Asiatic species with funr hai-licls, 

 as B. Ijcmkle^iis and rayra. The name PacJij/nfomiis is not avail- 

 able, having been used more than thirty years earlier in Diptera. 

 Day also recognizes a sul^genus Bendelisis, for B. barila, a vertically 

 barred species with two barliels, according to iiis description, 

 thongh my notes from tlie lislies (Assam, F. Dai/) describe obscure 

 spots. 



According to the scale-characters, the most distinct group is that 

 of B. gatensis and ranarevsis; these are jilaced by Day in typical 

 BariJiua, along witli />'. (iico and B. giitlahis. 



\\\{\i tlie removal of Ei)graiiliryj>ris, tlie African P>arilii(x remain 

 a fairly compact group, with no imiiortant dillerence from the 

 Asiatic forms. Tlu' large lishes called Pclolroplms, in Lake Nyassa, 

 indicate a ct'rtain amount of divergence, in response to conditions 

 not found in Asia. 



(4.) Lrptocypris. L. modesliis ( Ikinzyville, I'hauzi, Congo Free State, 

 Cap!, lloyaux). Scales about ;!'4 mm. long and .'> broad, with 

 prominent lafembasal angles; nuclear area far basail; obscure 

 rudiments of basal radii ; apical radii S or 10, well-deliued, widely 

 S[)aced ; lateral circuli moderately dense, in the same line with the 

 closer ai)ical ones. This scale is ]ik(^ that of Barilius Jcingsleyie, 

 excejit that the apical radii are fewer. 



(5.) Phoxinellns. See I'roc. P.iol. Soc. Wash.. XXII (1!»00), p. L'lO. 



(0. ) Baxbora. I liave only tlie Asiali<' h'. argyrnlniiin ( I'.arani, Lorneo, 

 Hose). Tiie scale is large (about li' mm. long and liroad), with 



