February, 1902] 



PSYCHE. 



311 



Stage IV. (Green form). Head round, flat- 

 tened, oblique, clvpeus half to vertex, mouth 

 projectinLj, antennae moderate, divergent; 

 green, wliitisli in the clvpeus, antennae white, 

 moutli l:)ro\vnish sliaded; width 1.4 mm. 

 Bod^' cylindrical, slightly narrowed before, 

 normal, moderate; segments obscurely 6an- 

 nulate. Green, faintly white lined; thoracic 

 feet and a row of segmentary, diffuse, sub- 

 confluent ventral spots and base of foot of 

 joint 10 purple brown. The more distinct 

 pale lines are addorsal, subdorsal, a broad 

 slightly yellowish diffuse one on subventral 

 fold and broken adventral. Tubercles whit- 

 ish green, roundedly elevated, low. Setae 

 short, obscure. (Brown form). Head broadly- 

 brown over the lobes, the edges of the patch 

 mottled, brown marks on sutures and in cly- 

 peus. Body pale brown, faintly pale lined; 

 a dark brown dorsal line and broken stig- 

 matal one, rather broad; ventral and foot 

 marks as in the green form. Subventral 

 fold broadly pale. 



Stage V. (Green form.) Head green, 

 rounded, flatly outstretched, whitish streaked 

 about clypeus, antennae rather long, yellow- 

 ish white, mouth pak'; width 2 mm. Body 

 cylindrical, subventral fold distinct ; uni- 

 form, not elongate. Green, whitish over the 

 dorsum, with addorsal, subdorsal and double 

 lateral irregular, faint, whitish lines; subven- 

 tral fold diffusely yellow. Feet green, nor- 

 mal. Tubercles minute; setae rather long 

 but fine, dusky. A brownish shade at the 

 base of the foot of joint 10. (Brown form.) 

 Head with a large chocolate patch on each 

 lobe shading into reticulations at the edge, 

 leaving the clypeus mostly pale. Body milky 

 chocolate, the subventral fold broadly and 

 diffusely yellow; dorsum and venter with 

 several obscure darker lines. On the sides 

 of joints 2 to 4 and 10 to 1 1 and on joints 5 to 

 9, forming nearly completely encircling 

 bands are irregular dark chocolate niottlings. 

 Tubercles chocolate, spiracles pale. The 

 bands vary in extent and distinctness. Foot 

 of joint II chocolate; anal plate pale brown. 



Pupation in the ground. 



Food plant. Cottonwood [Popitlus fre- 

 montii ivislezeni); they will also eat willow. 

 I^arvae from Denver, Colorado. Eggs May 

 I ith, mature larva June 7th. 



EcoxoiMic Entomology. — Sanderson's In- 

 sects injurious to staple crops (New York, 

 John Wiley and Sons, 1902) contains fifteen 

 chapters devoted to Injury done staple crops 

 by insect pests. Structure and development 

 of insects. General farm practice against in- 

 jurious insects, Beneficial insects. Insects 

 injurious to grains and grasses, to wheat, to 

 Indian corn, Weevil in grain. Insects inju- 

 rious to clover, to cotton, to tobacco, to the 

 potato, to the sugar-beet, to the hop-plant, 

 and Insecticides. 



The text though compiled and not compre- 

 hensive will serve the purpose of the author 

 fairly well ; a direct reference to a detailed 

 account of each species would have been of 

 real benefit. Most of the illustrations have 

 been used previously and the source is ac- 

 knowledged though in some cases inade- 

 quately ; the helpfulness of some of the orig- 

 inal cuts (c. g. Figs. 4 and 5) may well be 

 questioned. 



PROCEEDINGS OF THE CLUB. 



8 March, 1901. The 219th meeting was 

 held at 156 Brattle St., Mr. S. II. Scudder in 

 the chair. 



Mr. Samuel Henshaw was unanimously 

 elected a life member as a token of the 

 Club's appreciation of liis generosity. 



Mr. C. W. Woodworth remarked on obser- 

 vations he had made on Alcuyodes citri, 

 which feeds on the under side of the leaves 

 of orange trees in Florida. He gave an in- 

 teresting account of its anatomy and habits. 

 Among other things he called attention to 

 the curious arrangement of the stigmata and 

 tracheae, owing to the extreme flatness of the 

 insect. He also stated that all the append- 

 ages except the mouth organs are shed in 



