100 MB. G. A. BOXJLENGER ON THE AFEICAN ATTD [Feb. 



Alveolar surface of jaws narrow, with two series of 



notched teeth ; a pair of enlarged, incisor-like 



teeth at the symphysis ; an adipose crest on the 



occiput 15. Steatocranus Blgr. 



Alveolar surface of jaws very broad ; outer teeth 



large, with nail-shaped entire crowns, those of the 



inner rows tricuspid 16, Bocimodus 'Blgr. 



E. Anal spines III ; teeth large, few, in a 

 single series. 

 Teeth with swollen bases and low, compressed, 



slightly notched crowns 17. Perissodtis Blgr. 



Teeth compressed and truncate, curved and directed 



backwards 18. P^ot^ws Blgr. 



II. Vertical fins folding in a scaly sheath ; anal 

 spines VIII to X ; teeth obtuse, in a single 

 row 19. Paretropltis BYki. 



1. Lampeologus Schilth. 

 P. Z. S. 1898, p. 134. 



1. Lampeologus fasciatus Blgr. 



Tr. Z. S. XV. p. 7. 

 Lake Tanganyika. 



2. Lampeologus compeessiceps Blgr. 



Tr. Z. S. XV. p. 7. 

 Lake Tanganyika. 



3. Lampeologus mooeh BJgr. 



Tr. Z. S. XV. p. S.- 

 Lake Tanganyika. 



4. Lampeologus cokgoensis Schilth. 



P. Z. S. 1898, p. 134. 

 Congo. 



5. Lampeologus modestus Blgr. 



Tr. Z. S. XV. p. 8. 

 Lake Tanganyika. 



6. Lampeologus elongatus Blgr. 



Tr. Z. S. XV. p. 9. 

 Lake Tanganyika. 



7. Lampeologus puecifee Blgr. 



Tr. Z. S. XV. p. 9. 



Lake Tanganyika. 



2. JULIDOCHEOMtS Blgr. 

 Tr. Z. S. XV. p. 11. 



1. JULIDOCHEOMIS OENATUS Blgr. 



Tr. Z. S. XV. p. 12. 

 Lake Tanganyika, 



*o' 



