ADDENDA ET COKKIGENDA. 557 



Page 97. Periophtlialinus koelreuteri. 



Var. K0ELBET7TEKI. 



a'-b'. Young. Ceylon. Purchased of Mr. Cuming. 



Var. PAPiLio. 



%'. Thirty lines long. Cape of Good Hope. Presented by the Officers 



of the Ai-my Medical Department at Fort Pitt. 

 Tc'-V. Half-grown. Grand Popoa. Presented by J. Couch, Esq. 



Page 105. 



Erase 8. Eleotris somnolentus, Girard, from the list of doubtful 

 species. 



Page 113. Add another species : — 



9 a. Eleotris somnolenta. 

 Eleotris sumnulentus, GtVarrf, Proc. Acad. Nat. Sc. PMlad. 1858, p. 169, 

 and U. S. 8f Mex. Bound. Surv. Fishes, p. 28. pi. 12. figs. 1-3. 



^- '^ I T- ^- ^- ^- ^^^- 3^-3^- 



Nine series of scales between the origin of the second dorsal and 

 the anal. The scales on the upper surface of the head are rather 

 small and extend to the extremity of the snout, those on the side oi 

 the head to the praeorbital. Scales minutely cihated. The height 

 of the body is contained four times and a fifth in the total length, 

 the length of the head four times and a half to four times and two- 

 thirds. Head obtuse, thick. The upper profile of the snout descend- 

 ing obliquely downwards in a nearly straight line. The diameter of 

 the eye is one-seventh of the length of the head and one-third of the 

 width of the interorbital space. The maxillaiy extends nearly to 

 the vertical from the anterior margin of the orbit. Teeth moveable, 

 vUUform. Caudal rounded, a Httle shorter than the head. Greenish- 

 olive ; cheek with two indistinct darker streaks ; a black spot on the 

 shoulder. The second dorsal and anal with series of dark spots. 



Fresh waters of Central America and Demerara. 



The three specimens " with shorter head and caudal fin " (p. 112) 

 belong to this species ; three others have since been received. 

 d, e-f. Adult and half-grown. Cordova. 



Page 115. Add a new species : — 



13 a. Eleotris potamopMla. 



D. 6 1 4-. A. ^. L. lat. 42. 



Praeoperculum without spine. Fourteen series of scales between 

 the origins of the second dorsal and the anal fins. The scales on 

 the neck are of moderate size, becoming gradually smaller anteriorly, 

 twenty-three between spinous dorsal and snout (the small anterior 

 ones included) ; they do not extend on the snout. Scales on the oper- 

 culum smaller than those on the body ; those on the cheek very small 

 and numerous. Scales cUiated. The height of the body is con- 



