222 Mr. C. T. Regan on a 



the tympanum. Toes rather short, not fully webbed, the 

 disks a little smaller than those of the lingers ; inner meta- 

 tarsal tubercle oval, flat. The tibio-tarsal articulation reaches 

 the posterior border of the eye ; length of tibia not half length 

 of head and body. Skin smooth above, coarsely granular 

 beneath. Green above, white beneath ; axillar and lumbar 

 regions with large black spots ; sides of hind limbs bright 

 orange with large black spots ; interdigital membranes orange, 

 spotted with black. 



From snout to vent 45 mm. 



Two female specimens from the Nanto district, Lake 

 Candidje, Central Formosa, from the collection of Dr. Arnold 

 Moltrecht. 



Closely allied to R. schlegelii } Gtlir. 



Achalinus formosanus. 



Head small, once and two-thirds as long as broad ; rostral 

 small, broader than deep, not visible from above; suture 

 between the internasals a little shorter than that between the 

 prefrontals ; frontal slightly broader than long, three times 

 as broad as the supraocular, about half as long as the parietals ; 

 loreal nearly three times as long as deep; temporals 2 + 2, 

 the upper anterior in contact with the eye ; three shields 

 bordering the parietals on each side ; six upper labials, first 

 very small, fourth and fifth entering the eye, sixth much 

 elongate; two pairs of large chin-shields, immediately followed 

 by the ventrals. Scales unicarinate, in 27 rows. Ventrals 

 173; anal entire; subcaudals 64. Blackish above, the 

 outer scales pale in the centre ; labial, ventral, and caudal 

 shields yellowish white, edged with blackish. 



Total length 860 mm. ; tail 140. 



A single female specimen, obtained at Punkiho, Kagi 

 district, Central Formosa, by Dr. A. Moltrecht. 



XXIII. — Description of a new Fish of the Genus Cichlosoma 

 from Tampico, with JSotes on some other Fishes from Mexico 

 and the Caribbean Sea. By C. Tate Eegan, M.A. 



During a recent visit of Sir Frederic Johnstone's yacht 

 * Zenaida,' R.Y.S., to Mexico and the Caribbean Sea a number 

 of fishes were obtained. Several were caught with rod 

 and line by Laura, Countess of Wilton, who has presented 

 them to the British Museum, and others were collected by 

 Dr. P. R. Lowe. 



Among them are examples of a little blenny, Enneanectes 



