NOTES ON AN EXHIBIT OF SPECIVIENS OF 

 CEUAT01)U8 



Db. T. Harvey Johnston and Dr. T. L. Bancroft. 



{Before the Royal Society of Queensland, May 31st, 1915.) 



Dr. T. Harvey Johnston exhibited a series of speci- 

 mens of Neoceratodus forsteri (Krefft), forwarded to him by 

 Dr. T. L. Bancroft, of Eidsvold, Burnett River. 



The largest measured exactly 40 cm. (16 inches), and 

 its weight was approximately a pound and a-half. Only 

 one Ceratodus of a smaller size, a fourteen inch specimen, 

 appears to have been taken previously. 



Another of the exhibits was 75 mm. in length with 

 a maximum dorso ventral breadth of 13.5 mm. which 

 was in the anterior part of the tail region, the greatest 

 breadth in the trunk reaching 13 mm. The maxi- 

 mum width, i.e., from side to side, was in the head 

 region and measured 10.0 mm. The dorsal fin 

 extended relatively much further forward than in the 

 adult, reaching to within a few millimetres of the opercular 

 region. The opercula were much more evident than in 

 an adult, the two meeting ventrally to form a V, whose 

 apex was directed forwards, whereas in the adult exhibited, 

 they were separated by a considerable interval. Each 

 covered relatively more of the base of the corresponding 

 pectoral fin than in an adult lung-fish. The inequality in 

 the size of the pectoral and pelvic fin was relatively much 

 greater than in adults, the pelvic fin being much smaller. 

 The ratio of the length of the taU, i.e., the region behind the 

 anus, to the rest of the body was nearly the same as in the 

 case of an adult, being 5 : 6 and 5.27 : 6 respectively. 



