SOUTH AMERICAN NEMATOGNATHI. 157 



176. Centromochlus perugise (.Steindaelmer.) 



177. Centromochlus aulopygius Kuer. 



Locality: Cndajas. 



178. Centromochlus albescens R°iuhardt. 

 Localities: Rio Parahyba; Kio Janeiro; Macacos. 



XXXVII [. Wektheimeria Steindaelmer. 



179. Wertheimeria maculata Steind. 



XXXIX. Trachelyopterus Cuv. & Val. 



180. Trachelyopterus coriaceus Cuv. & Vai. 



Localities: Obidos; Porto do Moz. 



180«. Trachelyopterus coriaceus maculosus var. uov. 



Type, No. 7337. Porto do Moz. Senhor Vinlias. 



Body light brown, with longitudinal series of rusty brown 

 spots. 



XL. Trachelyopterichtys Bleeker. 



181. Trachelyopterichthys tgeniatus Kuer 



Locality: Teffe 



XLI. Cetopsis Agassiz. 

 § Hemicetopsis. 



182. Cetopsis candiru (Spix.) 



Localities: Tabatinga; Jutaby; Tcuantius; I^a. 



183. Cetopsis plumbeUS Steiudachuer. 



§ Cetopsis. 



184. Cetopsis COeCUtiens (Lichtenstein.) 

 Locality; Gurupa. 



§ Pseudocetopsis. 



185. Cetopsis gobioides Kuer. 



§ SUBGEN. NOV, '? 



186. Cetopsis OCCidentalis Steindachuer. 



187. Cetopsis ventralis Gill. 



