42 



Fig. 20. Acanlhognaihus 



dactyliophorus (Blkr.) 



X lV3- 



Microphis Dumeril, Hist. nat. Poissons II. 1870, p. 588. 

 Doryichthys Giinther, Cat. Brit. Mus. VIII. 1870, 



p. 179 — Regan, Revue Suisse de Zoologie 1903. 



P- 413- 



Body much elongate, heptagonal, the 

 abdominal crista being flattened. Eggs 

 attached to the skin of the abdomen, in 

 which they are embedded, incompletely 

 isolated from each other and uncovered 

 by cutaneous folds or scutal plates. Tail 

 rather short, tetragonal. Anus behind 

 middle of length. Superior and inferior 

 cristae of trunk and tail discontinuous. Me- 

 dian cristae of trunk and inferior cristae 

 of tail continuous. Greatest part of short 

 dorsal above caudal rings; anal and pec- 

 torals present; caudal extensive. The edge 

 of each ring terminates in a spine. Inter- 

 medial scutes (scutella) present, as also 

 the praenuchal and two nuchal plates. 



Distribution: Mauritius, Indo-aus- 

 tralian Archipelago, Pelew Islands and 

 New Caledonia. 



I. Acanthognathus dactyliophorus (Blkr.) 

 [Fig. 20, p. 42]. 



Syngiiathits dactyliophorus Bleeker, Nat. Tijdschr. 



Ned. Ind. IV. 1853, p. 506. — Verb. Batav. Ge- 



nootsch. XXV. 1853, Bijdr. Troskieuwige Visschen 



p. 16. 

 Corythratclitliys daciyliophorns Kaup, Cat. I^ophobr. 



Fish, 1856, p. 28. 

 Alicrophis dactyliophorus Bleeker, Act. Soc. Sc. Indo- 



Neerl. VIII. i860, 8. Bijdr. vischfauna Sumatra 



p. 72. — Ned. Tijdschr. Dierk. II. 1865, p. 273. 

 Microphis dactyliophorus Dumeril, Hist. nat. Poiss. 



II. 1870, p. 592. 

 Doryichthys dactyliophorus Giinther, Cat. Brit. Mus. 



VIII. 1870, p. 186. — Fische d. Stidsee HI. 



1909 — 1910, p. 433. 

 Acanthognathus dactvlophorus Duncker, Mitt. a. d. 



naturh. Mus. Hamburg XXIX. 1912, p. 228. — 



Ibid. XXXII. 1915, p. 41. 



