558 MR. F. DAY ON INDIAN FISHES. [May 9, 



2. DuNSTERViLLiA coRCYNENSis, O. Schmidt, S. Ad. p. 1 6, t. 1 . 

 f. 5; Supp. ii. t. 1. f. 6. 



Fam. 3. Aphrocerasid^. 



Sponge tubular, branched, formed of two coats ; outer coat of 

 simple fusiform spicula, placed side by side in the longitudinal axis 

 of the stem and branches. Inner coat and network of interlaced 

 fibres, placed in all directions. Branches simple, attenuated and 

 open at the tip. 



Aphroceras, Gray, P. Z. S. 1858, p. 113. 

 Aphroceras ALcicoRNis, Gray, ib. p. 114, Rad. pi. x. f. 1, 2. 

 Hab. Hong Kong (Dr. Harland). ^^'^^^ 



DESCRIPTION OF PLATES XXVII. & XXVIII. 

 Plate XXVII. 

 Fig. 1. Dacfylocalyx subglohosa (p. 50G), of the natural size. From a specimen 

 in the British Museum. 

 2. Bactylocalyx pumicea (p. .")0G), one-eighth of tlie natural size. From a 

 specimen in the British Museum. 



Plate XXVIII. 



Fig. 1. Corbitella speciosa, p. 530. 

 2. Heferotella corbicula, p. 531. 



(Both from photographs of specimens in the Museum of Paris.) 



7. On some New or imperfectly known Fishes of Madras. 

 By Francis Day, F.Z.S., F.L.S., Madras Army. 



The following descriptions refer to seven species of fish personally 

 obtained in the Madras Presidency during the last few months. The 

 freshwater ones are from the Toomboodra at Kurnool, the saltwater 

 ones from Madras. They appear to be either new to science or 

 imperfectly known, as none find a place in Dr. Giinther's elaborate 

 'Catalogue of Fishes,' except where they are mentioned in notes 

 without a description, and with the synonymy only, as "species 

 either insufficiently described, or founded on characters so slight 

 that it is doubtful if they will stand as species." Sykes's Pimelodvs 

 gogra seems to form the type of a new genus, which I have desig- 

 nated Gogrius. 



Lethrinus karwa, Cuv, & Val. 



B. vi. D. 10/9. P. 13. V. 1/5. A. 3/8. C. 17. L. 1. 40. 

 L. tr. 5/16. 



Length of specimen 1 .5 inches. 



Length of head -fj;, of pectoral above \, of caudal |, of base of 

 dorsal nearly i, of base of anal | of the total length. Height of 



