90 MEMOIRS OF THE QUEENSLAND MUSEUM. 



Family XIV— MOBULID^. " The Sea Devils." 

 Genus 39 — MOBULA Rafinesque, Ind. Itt. Sicil., 1810, p. 61 {auriculata=mobular). 



59. eregoodoo Cantor. " Horned Ray." 



Journ. Asiat. Soc Bengal, xviii, 1849, p. 1420 : Sea of Pinang ; Giinther, 

 Catal., viii, p. 497 (as Dicerobatis eregoodoo) — Garman, Plagiost., p. 451. 



Figures : — Day, Fish. India, pi. 193, fig. 1 ; Kent, Great Barrier Reef, pi. 48, 

 figs. 2 & 3. 



Dimensions : — Width of disk to at least 5-5 mm. 



Range : — Coast of Queensland from south to north. Moreton Bay {Q.M., O.G.), 

 Palm Islands {Kent).^^ 



APPENDIX A. 



Under this heading will be found simple keys to (1) the families of the Queens- 

 land sharks and rays ; (2) the genera of such famihes as are not monotypic ; and (3) 

 the species of the same.^'^ 



By this means it is hoped that all those who are interested in nature-study, 

 especially those in our schools and universities, may be enabled to identify such 

 species as come within their purview, and thus Uttle by httle enlarge our knowledge. 

 And it is not only by the addition of new or exotic species to the Queensland list 

 that such knowledge may be extended, but it is of even higher importance to gain a 

 closer insight into the habits, the comings and goings, and the limits of distribution 

 of the common species with which we are famiHar from day to day, but of whose 

 inner Ufe we are wofully ignorant. Only by the close observation of local workers 

 along our whole coastline can this ignorance be dispelled. In such work the veriest 

 tyro has an equal chance with the expert of making important discoveries. 



Key 1— our EUSELACHIAN FAMILIES. 

 a^. Pleurotremata : — Gill -openings lateral. 



fti. Two spineless dorsal fins ; anal fin present (Galeoidel). 

 c^. Eye without nictitating membrane, 

 rfi. No oro -nasal grooves. 



e^. Last gill-opening in front of base of pectoral. 

 /^. Dorsal fins subequal in size .. .. .. .. .. . .i. Carchariid^. 



/-. Second dorsal fin much smaller than first. 



r/^. Caudal fin miich prodviced, the peduncle without keel . . . . ii. Alopiid^. 



fj". Caudal fin of moderate length, lunate, the peduncle strongly keeled iii. Isurid-e. 



e^. Last one or two gill-openings above base of pectoral . . v. Scyliorhinid^ 



d^. Oro -nasal grooves present .. .. .. .. . . iv. Orectolobid^, . 



C-. Eye with nictitating membrane . . . . . . . . . . . . vi. Galeid^.- 



b'^. Dorsal fins with or without a spine ; anal fin absent or present {Squaloidei). 



h^. Each dorsal fin preceded by a spine ; anal fin present . . . . vii. Heterodontid^. 



a-. Hypotremata : — Gill-openings ventral ; no anal fin. 



i^. Electric organs present, between pectoral fins and head (Narcacioiioidei). . 



viii. Narcaciokii>i?; 

 P. No electric organs (Batoklei). 

 j^. Tail stout and muscular ; two dorsal fins (Sarcura). 



^* Most of Kent's remarks on this fish refer more properly to A. narinari. 

 ^ * The genera and species which belong to monotypic families (so far as this State is concerned ) 

 may be easily identified by the family characters given in Key 1. 



