ILLUSTRATIONS 



PLATES. 



Page, 

 Plate I, Work oiLixus musculus and Orthoris crotchii. Fig. 1. — Gall of Lixus 



musculus and exit hole of adult on stem of Polygonum pennsy,l- 

 vanicum. Fig. 2. — Gall of Lixus musculus and entrance hole 

 (closed) of pyralid caterpillar on stem, of Polygonum. Fig. 3. — 

 Pod of Mentzelia nuda showing two egg punctures of Orthoris 

 crotchii. Fig. 4. — Pod of Mentzelia opened, showing a cluster of 

 Orthoris crotchii cells, and the cocoons of Tetrastichus. Figs. 5, 

 6. — Interior of pod of the same, showing several cells of Orthoris 

 crotchii. Fig. 7. — An isolated cell of Orthoris crotchii^ showing the 



manner in which the seeds are eaten 42 



II. Work of the pepper weevil {Anthonomus xneolinctus). Fig. 1. — 

 Emergence holes of adult in chilli pepper. Fig. 2.— Full-grown 

 larvse in situ in chilli pepper. Fig. 3. — Pupae in cells in chilli pep- 

 per. Fig. 4.— Undeveloped bell-pepper pod, showing numerous 

 egg and feeding punctures. Figs. 5, 6. — Malformed bell-pepper 



pods caused by egg punctures 56 



III. The cotton stalk-borer {Ataxia crypta). Fig. 1. — Adult or beetle. 

 Fig. 2. — a, Galleries; 6, work. Fig. 3. — Emergence holes of 

 adults. Fig. 4. — a, Larva in situ; h, pupa in situ. Fig. 5. — a, Gal- 

 lery running into root of plant; b, castings behind larva 64 



TEXT FIGURES. 



Fig. 1. Daily temperatures at College Station, Tex., October 1, 1903, to June 



15, 1904 4 



2. Rainfall and temperature records for College Station and Victoria, 



Tex., in 1903-4, compared with normals , 5 



3. Rainfall and temperature records of College Station and Victoria, Tex., 



for 1902-3, compared with normals 13 



4. Rainfall and temperature records, Hallettsville, Tex., 1899-1901, com- 



pared with normals for each year 15 



5. Rainfall and temperature records, Hallettsville, Tex., 1902-1904, com- 



pared' with normals for each year 16 



6. Comparison of normal temperatures, October 15 to June 15, for various 



districts in Texas 20 



7. An ant enemy of the cotton boll weevil: Cotton squares showing emer- 



gence hole of weevil and entrance holes of Solenopsis geminata var. 



xyloni for comparison 1 .• 47 



8. Apiomerus spissipes: Adult, egg mass, nymph 50 



9. Apiomerus spissipes: Egg 50 



10. The pepper weevil {Anthonomus xneotinctus) : Adult 56 



IX 



