On a new Cyprinodontid Fish from Ejijpt. 135 



<*~^> ''9- Greci, on pranitic hills in the Macin district, 15 miles from 



Braihi on the Oauube. 

 d. Cocosu Monastery, S.E. of Macin. 



1. Total length. 2. Length of tail. 3. Number of scales across body, 

 4. Number of ventral shields. 5. Number of subcaudal shields. 

 6. Numbtr of whorls of scales on rostral " horn." 7. Width of 

 rostral shield. 8. Depth of rostral shield. 9. Number of scales 

 across vertex between supraoculars. 10, 11. Number of upper labial 

 shields (right and left). 12, 13. Upper labial shields (4th, 5th, or 

 6th) entering the eye (right and left). 14, 15. Number of bcales 

 round the eye, supraocular excluded (right and left). 



The var. Montandoni may be thus defined : — 

 Naso-rostral shield not reaching the canthus rostralis nor 

 the summit of tlie rostral shield, which is deeper than broad ; 

 rostral " horn " with 2 to 4, usually ?>, transverse series of 

 scales between the rostral shield and the apex. Ventral 

 shields 149 to 158. A more or less distinct dark blotch on 

 the lower lip, involving 5 to 7 labial shields without complete 

 interruption. Lower surface of end of tail yellow. 



This race is easily distinguished from the typical form by 

 tlie shape of the rostral and naso-rostral shields, the extent 

 of the dark blotch on the lower lip, and the yellow colour on 

 the tail (nearly always red in the typical form). From the 

 var. meridionalis, to which it is more closely related, the 

 higher number of ventral shields (149-158, instead of 133- 

 147) and the usually lesser develojmien t of the rostral 

 ti horn'^ are sufficient characters to justify a Parietal separation. 



XX. — On a neio Cyprinodontid Fish from Egypt, 

 By G. A. liOULENUER, F.R.S. 



Along with examples of Paratilajna multicolor^ recently 

 discovered by him, Mr. C. H. Schoellcr has kindly sent me 

 several specimens of a little Cyprinodout which occurs near 



