ILLUSTRATIONS. 



PLATES. 



Page. 

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



musculus and exit hole of adult on stem of Polygonum pennsyl- 

 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 xneotinctus) . Fig. 1. — 

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

 larvae in situ in chilli pepper. Fig. 3. — Pupse 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; b, work. Fig. 3. — Emergence holes of 

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

 lery running into root of plant; 6, 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 47 



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



9. Apiomerus spissipes: Egg 50 



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



VII 



