﻿64 -ENDEAVOUE" SCIENTIFIC RESULTS. 



Family CHEILODAC'l VLID^. 

 Genus Goxiistius, Gill. 



GONIISTIUS VIZONARIUS, Kent. 



Magpie Perch. 

 (Plate xi.) 



('heiloilactylus gibbosus, Castelnau, Proc. Zool. Soc. Vict., 

 i., 1872, p. 75; id., Johnston, Proc. Roy. Soc. Tasm.! 

 1882 (1883), p. 112; id., Lucas, Proc. Roy. Soc. Vict., 

 (n. sen), ii., 1890, p. 21 (after Castelnau) [nee. C. 

 gibbosus, Richardson). 



Chilodactylus vizonarius, Kent, Proc. Roy. Soc. Tasm., 1887, 

 pp. XXX., xxxi. and 48; id., Johnston, Proc. Roy. Soc. 

 Tasm., 1890 (1891), p. 31. 



■Chilodactylus bizonarius, K'ent, Naturalist in Austr., 1897, 

 pp. 165, 166, pi. xx\iii., fig. 13. 



D. xviii., 25-28; A. iii., 10; P. 8 + 6; V. i. z,- C. i-- 



1. lat. 65-68. 100. 



Height of the body 2-6 to 2-8, length of the head 3-50 to 

 3"66 in the length to the hypural. Snout much longer than the 

 diameter of the eye which is 4-2 to 4-8 in the head. Nostrils 

 large, close together, the anterior with tM'o skinny lobes. 

 Mouth rather small, the maxillary reaching to below the 

 posterior nostril. A band of villiform teeth in each jaw; 

 vomer, palatines and tongue toothless. There is a large 

 conical projection in front of each eye, extending slightly 

 outwards and upwards. 



First dorsal originating a little behind the vertical of the 

 preoperculum, the fifth spine generally the longest, and either 

 equal to the distance from the snout to the preoperculum or 

 considerably shorter. Anterior rays subequal in length, 

 gradually decreasing backwards, the longest somewhat longer 

 than the snout. Third anal spine longer than the second ; 

 the second ray the longest and equal to the length from the 

 snout to the preoperculum. The simple rays of the pectoral 

 are very variable in their relative lengths ; the second is 

 always the longest and reaches: either to the origin or middle 

 of the anal fin. \'entral spine slender, generallv equal to the 

 fourth dorsal spine in length ; the first rav reaches to, or 

 almost to the vent. Caudal deeply forked. 



Scales large anteriorly, becoming smaller behind. They 

 -form a sheath to the bases of the dorsal and anal fins. On 

 the head they are very small and extend forwards to the 

 anterior margin of the eyes above and to the maxillary below, 

 leaving the snout bare. They are very small on the breast 



