CHEILICHTHYS PSITTACUS. 139 



about 25 m.m. They differ from Steiadachner's description 

 and figure (Verb. Zool. Bot. Ges. Wien. 1861. p. 141 ; taf. 

 4) in having 7 crossbands. Between the band in the neigh- 

 bourhood of the pectorals and that at the root of the 

 dorsal two distinctly separated bands are present (as in 

 the figure in Bloch-Schneider , pi. 95) and not one broad 

 crossband as in Steindachner's specimen. 



Five specimens from Surinam already in the collection of 

 the Leydeu Museum and much larger (from 58 to 95 m.m.) 

 have also seven crossbands , just as the newly obtained 

 specimens. 



Explanation of the plate. 



Fig. 1. Dorsal tubercles of Gymnodactylics antillensis 



V. L. d. J., X 25. 

 Fig. 2. Phyllodactylus Martini v. L. d. J., natural size. 

 Fig, 3. Dorsal shields of the same, enlarged. 

 Fig. 4. Poecilia Vande.polli v. L. d. J., natural size. 

 Fig. 5. Anal fin of a male of the same species modified 



into an intromittent organ , x 26. 

 Fig. 6. Poecilia VandepoUi, var. aruhensis v. L. d. J., 



natural size. 

 Fig. 7. Teeth of this variety, x 50. 

 Fig. 8. A large curved tooth of the outer series of the 



same, x 130. 

 Fig. 9. A small conical tooth of the inner band of the 



same, x 130. 

 Fig. 10. Excrescences of the jawbone, whereupon the 



teeth are fixed , x 130. 



Notes from the Leyden ]VIuseu.m , Vol. IX. 



