202 Mr. G. A. Boulenger on 7icw 



Pupa. 



Fif/. 5. Dorsal view. 



Fit/. 6. Anterior outer lamina of left-hand respiratory horn, viewed 



from behind, p.a., paler area. 

 Fiff. 7. Inner laminre of left-hand respiratorvhorn, viewed from behind. 



a.i.L, anterior inner lamina ; p.i.l., posterior inner lamina ; 



t., trachea, a fragment still attached under the chitiuous wall 



of the body. 

 Fiff. 8. Diag-ramujatic oround-plan of left-hand respiratory horn. ???., 



median longitudinal line of thorax; a.o.L, p.o.l., anterior and 



posterior outer laminae: a.i.l., p.i.l. , anterior and posterior 



inner laminge ; s., spiracle. 



Imago. 



Fiff. P. Head and mouth-parts of (S , mounted in balsam, the organs 



pushed apart by pressure, labr., labrum ; kffp., hypopharynx ; 



mx., lobes of the two maxillje : lab., labium. 

 Fiff. 10. Eight maxillary palpus of J, enlarged. 

 Fiff. 11. Apex of c? hypopharynx, enlarged; the lateral fringes are 



doubled one over the other, so that the hairs projecting on 



the right side of the organ really arise from its left side, and 



vice versa. 

 Fiff. 12. Apex of hvpopharyux oi Kellogffina barnardi S , to same scale 



as fig. 11, for comparison. 

 Fiff. 13. (5 genital araiature from beneath, viewed as a transparent 



object. 

 Fiff. 14. Terminal joint of hind tarsus and claws, c? (closely similar in J ). 

 Fiff. 15. Wing of "c? (from one of "Willistoii's paratypes). 

 Fvj. 16. 5 , X 7 : the pale reticulation shown on the abdomen is due to 



desiccation-shrinkage. 

 Fiff. 17. 5; I'ead and body, x 7. 



XIII. — Descriptions of net o Freshicater Fishes from Sierra 

 Leone. By G. A. Boulengeu, F.R.S. 



(Published by permission of the Trustees of the British Museum.) 



A SMALL collection of fishes made at Matca, Sierra Leone, 

 by Mr. N. W. Tliomas, and presented by liim to the British 

 Museum, contains examples of three species previously known, 

 viz. Marcvsenius brachistius, Gill, Fundulus sjoestedti, Lounb., 

 JJa/dochiUis macrurus, Blgr. ; and of four which I regard as 

 new to science, vi/. an Eleotris allied to E. krihensis, Blgr., 

 wMiich will be described in the forthcoming third volume of 

 the ' Briiish ]\lusenm Catalogue,' and the ibllowing, referable 

 to the genera Barbiis, HapJochilus, and raratilapia. 



