io8 



1. I). 16—19. Taihings 33—37. 



(/. Tubcicles on cristae developed iiilu lony, 



slender spines. Occipital keel behind coronet 



with two distinct spines. 



a.. Snout equal to postovbital part of head. H. spiiiosissiiniis p. 109. 



/3. Snout about one eye-diameter longer than 



postorbital part of head //. Iiisliix p. 109. 



b. Tubercles on cristae not developed into long 



slender spines. Occipital keel behind coronet 



rough, but without di.stinct spines //. kuda p. 110. 



2. D. 19 — 21. Tailrings 38 — 42 H. /r'unacuhUiis p. 112. 



III. I). 13 — 14. 10 bodyrings. Coronet high H. coronatus p. 113. 



I. Hippocampus abdominalis Less. 



Hippocampus abdominalis Lesson in: PY-russac, Bull. Sc. Nat. XI. 1827, p. 127. 

 Hippocampus abdominalis Bleeker, Over eenige visschen van van Diemensland, 



Verh. Kon. Akad. Amsterdam II. 1855, p. 28. 

 Hippocampus abdominalis Kaup, Cat. Lophobranch. Fish, 1S56, p. 17. 

 Hippocampus abdominalis Giinther, Cat. Brit. Mus. VIII. 1870, p. 119. 

 Hippocampus abdominalis Dumeril, Hist. nat. Poissons II. 1870, p. 524. 

 Hippocampus abdominalis Macleay, Descr. Cat. Austral. Fish. II. 1881, p. 240 



(separ. edit.). 

 Hippocampus abdominalis Duncker, in: Fauna Siidwest Australiens II. 1909, p. 247. 

 Hippocampus abdominalis Mc Culloch, Zool. Results "Endeavour" Commonwealth 



Australia, Fisheries I. 191 1, p. 29. 

 Hippocampus graciliformis Mc Culloch, ibid. p. 29. 

 Hippocampus abdominalis Mc Culloch, Biol. Results "Endeavour", Commonwealth 



Australia, Fisheries II. part 3, 1914, p. 94 and IV. part 4, 1916, p. 181. 

 Hippocampus abdominalis Waite & Hale, Rec. South Austr. Mus. I. N°. 4, 



1921, p. 319. 



D. 27 — 31; A. 4; p. 15 — 18; Rings 12+46—49. 



Head 1,5 in trunk. Snout straight, cylindrical, equal to post- 

 orbital part of head. Eye 'j.^ — 8.3. Coronet low, without distinct 

 tubercles, forming a longitudinal crest. Supra-orbital tubercles 

 large, granular, as well as the tubercle in front of the coronet, 

 surmounted by a filament (absent in the specimen examined, 

 probably lost). Operculum with distinct radiating ridges; occi- 

 pital keel behind coronet without spines. With exception of 

 those on the head the tubercles are very feebly developed. 

 Cristae rugose. Height of the ridge, which carries the dorsal, 

 equal to half diameter of eye. Dorsal on lo'^ — I2ih body-ring 

 and on first to third tailring. Colour of alcohol specimen 

 yellowish brown. Tail with black bands. Black spots on head 

 and body. Length 250 mm. [A specimen of Bleeker's col- 

 lection in the Zoological Museum of Amsterdam seen by us]. 



