1885.] MR. F. DAY ON A HYBRID PLEURONECTID. 929 



before the middle, tlie surface impressed with a transverse groove, 

 interrupted at the middle, finely punctured within the groove, the 

 rest of the surface impunctate. Scutelluin fulvous. Elytra closely 

 and finely but distinctly punctured, the entire anterior portion to 

 slightly below the middle black, but tliis colour not quite extending 

 to the shoulders, which remain of the fulvous ground-colour ; a 

 triangular black spot is placed close to the apex of each elvtron. 

 Underside and legs fulvous ; the sides of the breast very narrowly 

 marked with black. 



Hab. Agoue {Benin). (Coll. Oberthiir and my own.) 

 This species, although evidently closely allied to D.apertn, Harold, 

 seems to differ sufficiently to justify its sej)aration. The elytra in 

 D. oherthuri, besides being closely punctured, of which Von Harold 

 makes no mention, are devoid of any basal elevation ; their black 

 anterior portion will separate the species from D. aperta and several 

 other allied forms in which the elytral bands are narrow. 



DiACANTHA VIRIDIPENNIS, Sp. UOV. 



Fulvous ; terminal joints of the antennae and the tarsi black ; 

 elytra closely punctured, metallic green. 



Length 2| lines. 



Head impunctate, with the usual transverse groove between the 

 eyes ; antennae with the four first joints fulvous, the rest black, 

 third and following joints equal. Thorax about twice as broad as 

 long, the sides very slightly rounded in front, the disk with a deep 

 transverse groove, not inteimpted at the middle. Scutellum ful- 

 vous. Elytra without any basilar elevation, closely and distinctly 

 punctured, entirely metallic green. Underside and legs fulvous ; 

 tarsi black; claws appendicidate ; anterior coxal cavities open. 



Uab. Africa, Quanauga Strom {Major v. Alechvw). (Coll. Ober- 

 thiir and my own.) 



5. On a supposed Hybrid between the Dab {Pkuronectes 

 limanda) and the Flounder (P. flesus). By F. Day, 

 F.Z.S. 



[Received November 27, 1885.] 



(Plate LXII.) 



On November 20th my attention was arrested at a fishmonger's 

 shop in Cheltenham by a curious-looking pleuronectoid fish with ilie 

 following characters and dimensions : — 



D. 71. P.r. II, L. 9. V.r. 6, 1. 6. A. CO. C. 14. L. 1. 92. 



Entire length 15 inches 



Length of head '2-9 „ 



Length of caudal fin 2 -i „ 



Height of body 6-4 „ 



Eyes on right side, diameter 0-6 in. ; 0-2 apart ; 0-5 from end of 

 nout. The lower jaw slightly in advance of the upper ; the maxilla 



