17 
and beneath the thoracic shield. Paralysis of the limbs follows 
almost at once, and in from 3 to 10 minutes the changa is lifeless. 
A large gray hairy spider, called l araila peluda," is not uncom- 
monly found in the soil and may account for an occasional changa. 
Individuals in captivity devoured the mole crickets greedily. 
Tower (46) records the adult of Tetracha sobrina infuscata as an 
enemy of the changa in the tobacco district in the interior of the 
island. This tiger beetle seems to be generally distributed over the 
island but is not very common. 
Calosoma altemans is another probable enemy of the mole cricket. 
An adult female of this species was found in a changa burrow at a 
depth of about 6 inches. In the laboratory the beetle killed four 
changas in about two weeks and fed upon them from time to time. 
This insect, which is also predacious on small Lepidopterous larvae, 
may be a more effective enemy of the mole cricket under natural 
conditions, but it is not a very common species. 
Larvse of Pyrophorus luminosus, in the absence of other food at 
least, will attack changas of any stage. This generally beneficial 
insect which is so common in the lowlands may be an effective enemy 
of the mole cricket. 
In Cuba a red ant known locally as " hormiga brava " attacks the 
changa in its burrows and may be an important factor in keeping 
down its numbers. This is not the same species as the Porto Rican 
ant which has the same common name. 1 
The value of the various lizards (Anolis spp.), so numerous over 
the island, as predators 'of the mole cricket is very small because of 
their diurnal habits. A changa emerging above ground during the 
daytime, however, is almost certain to furnish a meal for some lizard. 
The larger " siguana " (Ameiva exul) has the reputation of being a 
valuable enemy of the changa, and since it is a burrowing animal no 
doubt it does feed to a greater extent on the mole cricket than do the 
more common and smaller lizards. The stomach of an Ameiva col- 
lected at Yabucoa and examined by Mr. Wetmore contained frag- 
ments of a changa, and this species has been observed to dig out and 
devour mole crickets at Rio Piedras. 2 However, examination of the 
stomachs of four of these lizards taken at Mayaguez failed to reveal 
any traces of changas. In St. Lucia it is reported (6) that " previous 
to the introduction of the mongoose the mole cricket was kept under 
control by its natural enemy the ground lizard." This possibly 
refers to Ameiva sp. 
1 Correspondence from Mr. Patricio Cardih, entomologist of the Agricultural Experi- 
ment Station at Santiago de las Vegas, Cuba. 
2 Letter from Mr. E. G. Smyth, of the Porto Rico Insular Experiment Station, Feb. 7, 
1917. 
