10 



BULLETIX 326, U. S. DEPARTMENT OF AGRICULTURE. 



and following is a list of them arranged somewhat in order of im- 

 portance (figures following the name of each species indicate the 

 percentage formed by the mole cricket in the total bulk of the food) : 



Per cent. 

 Martinete (Butorides v. cubanus) — 54.33 



Falcon (Falco s. loquacula i 2S. 69 



Playero (Oxyechus v. rubidus) 14.42 



Putilla (Actitis macularia) 10.78 



Garza (Florida c. c&rulescens) 7.23 



Judio {Grotophaga ani) 5.69 



Ruiseiior (Mimus p. orpheus) 3.62 



Clerigo (Tolmarchus taylori) 3.04 



Pitirre (Tyrannus d. dominicensis) _ 2.36 



Jui (Myiarchus antillarum) 1.27 



Garzon bianco (Herodias egretta) 1.00 



Julian chivi (Tirco latimeri) .90 



Per cent. 



Zorzal (Mimocichla a. portoricensis) _ 0.86 



Mucaro [Gymnasia n. nudipes) . 60 



Canario de manglar (Dendroica p. 



bartholemica) .25 



GoTTi6n(Coturnicuhis s. intrieatus) _ .25 

 Mozambique (Holoquiscalus brachyp- 



terus) .21 



Calandra (Icterus portoricensis) .21 



Pajaro bobo (Coccyzus m. nesiotes)- . 21 



Zorzal negro (Margarops f. fuscatus) .16 

 Becacina (Gall in ago delicata), one 



bird only examined. 



BIRD ENEMIES OF THE SUGAB-CANE BOOT-BOREE. 



The sugar-cane root-borer (Diaprepes spengleri) , known also as 

 the orange leaf -weevil, is abundant and has long been known as in- 

 jurious to citrus stock. The adult feeds on leaves of the sugar cane, 

 orange, guava, avocado, mango, rose, and jobo, while recently the 

 grub has been found to be the destructive cane root-borer whose 

 depreciations have been known for some time. The adult is common 

 everywhere in weeds, cane fields, and on trees; and though two 

 broods are said to emerge, a few may be found throughout the year. 

 The grub, buried in the ground, is exposed to the attacks of birds 

 during plowing and cultivation only. Xone were identified in any of 

 the stomachs examined, though adults were eaten commonly by a 

 number of birds. The blackbird especially eats large numbers, and 

 the remains of as many as 16 were found in a single stomach. The 

 larger flycatchers captured the greatest quantities, and the querulous- 

 voiced ani is not far below them in usefulness. The insect was iden- 

 tified in the stomachs of 17 species of birds, listed in the order of 

 their importance as follows: 



Per cent. 



Clerigo (Tolmarchus taylori) IS. 47 



Pitirre (Tyrannus d. dominicensis)- 17.19 



Jul (Myiarchus antillarum) 11.22 



Mozambique (Holoquiscalus orachyp- 



terus) 9. 69 



Judio (Grotophaga ani) 7.09 



Mucaro (Gymnasio n. nudipes) 



Mariquita (Agelaius xanthomus) 



Bien-te-veo (Yireosylva c. calidris)- 



Ruisenor (Mimus p. orpheus) 



Zorzal (Mimocichla a. portoricen- 

 sis) , in 1 stomach. 



1.80 



1.72 



.51 



Calandra (Icterus portoricensis) , in 3 



stomachs. 

 Gallito (Loxigilla portoricensis). in 3 



stomachs. 

 Gorrion (Coturniculus s. intrieatus) . in 1 



stomach. 

 Zorzal negro (Margarops f. fuscatus), in 



1 stomach. 

 Pajaro bobo (Coccyzus in. nesiotes), in 1 



stomach. 

 Pajaro bobo (Coccyzus americanus). in 1 



stomach. 

 Gallareta (Gall inula g. galeata) . in 1 



stomach. 



BIRD ENEMIES OF THE WEEVIL STALK-BOREB. 



The weevil stalk-borer {Metamasius hemipterus) is more common 

 than generally supposed, as numbers were found in the stomachs 



