Amphibians and Reptiles of Mexico. 327 



States of fissidens (imperialis in part) tliat it feeds upoii frogs. This 

 is not unlikely as small toads and frogs are not uncommon about 

 these ponds. The female lias large eggs in the oviducts. 



Elax^s falvius (Linnaeus). 



Ratlier common at Cuatotolapam. Known by the name "coralilla''. 



The specimens obtained are referable to Boulenger's varieties 

 B and C. On the body there are 17 to 21 narrow black annuli 

 widely separated by red interSpaces and only imperfectly margined 

 with yellow. The red bands are profusely spotted with black. 



Nothing was learned of the habits of this snake. The only 

 specimens seen were in the cane fields and about the hacienda buil- 

 dings. The three immature specimens found about the buildings 

 were under boards. 



Lachesis Janceolatiis (Lacepede). 



Observed both on the plaius and in the mountains and said to 

 be not uncommon in both regions. Locally known as the "sorda". 



The Single specimen fa female) obtained is lanceolatns as described 

 by BouLEXGEE, the keels of the dorsal scales being nearly as long 

 as the scales. The scutellation is as follows: dorsal scale rows 

 23 — 25—23 — 21 — 19; Upper labials 8; lower labials 10; preoculars 2; 

 ventrals 213; subcaudals 65. Total length 1820 mm, tail 205 mm. 



This species is frequently found in the cane fields and is the 

 most dreaded serpent in the region. The specimen obtained had 

 recently eaten four or five squirrels. 



Crocodiliis (inievicanus Laurenti. 



Common in the rivers and ponds of the region and also in Lake 

 Catemaco. Known locally as "El Lagarto". 



A series of eleven specimens ranging from 250 mm to 1900 mm 

 in length was secured. Of the many adults seen none seemed much 

 longer tlian two meters. Two were seen in Lake Catemaco that 

 perhaps exceeded this length, but they were certainly not longer 

 than three meters. 



They were found everywhere in the streams and larger ponds, 

 The young ones, about 250 to 300 mm in length, were observed in 

 schools. They came out on the mud flats to sun themselves. and 

 when alarmed would rusli into the water and generally seek refuge 

 in the brush near shore; they were often di^covered to us by the 



Zool. Jahrb. XXXII. Abt. f. Syst. 23 



