1S9S.] 



STEIAl^ riSHES OF THE FAMILY CICHLIDiE, 



133 



make this revision more complete than would otherwise have been 

 possible, and to settle some points of synonymy which, from the 

 imperfection of the original descriptions, would have remained 

 unsolved. I seize this opportunity to express my thanks to 

 Professor Vaillant for the valuable help I have received from him 

 in connection with the celebrated collection in his charge, on this 

 and many previous occasions. 



My thanks are also due to Mr. J. Green, who has kindly 

 furnished me with sciagraphs of some unique specimens, by means 

 of which I have been able to ascertain the number of vertebrae. 



Synopsis of the Genera. 



I. No sheath to the vertical fins. 



A. Anal spines VI or VII ; teeth conical, some 



enlarged and canine-like .. 1. Lamproloff2is, Sc]iiltY\. 



B. Anal spines III or IV. 



1. Teeth not notcLied, vmiciispid. 



«. Alveolar surface oP javrs narrow or 

 uioderately broad. 

 a. Kg pad-like papillose prominence 

 close to the upper part of the 

 branchial arches. 



* Teeth in one or two series, with 



more or less enlarged or canine- 

 like ones at the symphysis 2. Hemichromis, Teters. 



** Teeth in two or more series in both 

 jaws, outer largest and more or 

 less distinctly curved inwards ; 

 no enlarged teeth at the sym- 

 physis 3. Paratilapia, Wkr. 



/3. A pad-like prominence close to the 

 upper part of the branchial arches. 



* Teeth in two or more series in both 



jaws, outer largest and more or 



less distinctly curved inward ... 4. Pel'maiockrojnis, Stdi: 

 ** Teeth in one or two series, some 



of the larger ones with the crown 



bent at an angle to the shaft and 



directed forward or backward ... f). ChromidoliJapia, Blgr. 

 h. Alveolar surface of jaws extremely broad, 

 with innumerable minute teeth with 

 compressed, oblique crowns 0. Core7natodus,'S>\gr, 



2. Teeth all or greater part notched or tri- 



cuspid. 



a. Alveolar surface of jaws narrow or 



moderately broad ; aU the teeth 



notched or tricuspid 7. Tilapia, ^vaith. 



b. Alveolar surface of jaws very broad ; 



outer teeth large, with nail-shaped 

 entire crowns, those of the inner rows 

 tricuspid S. BocimoduSyliXgr, 



II. Vertical fins folding in a scaly sheath ; anal 

 spines VIII or IX; teeth spatulate, in a single 



row 9. Paretroplus, Blhr. 



The three latter genera will be dealt with in the second part of 

 this paper. 



