PUTNAM ON PULVINARIA INNUMEEABILIS. 345 



Fig. 34. Male and female in copulation. 10 diameters. Page 313. 



Fig. 35. An oblique view of mouth parts of adult female, slightly 

 drawn apart in dissection ; a, labium ; a;, cross section of base of labium ; 

 b, crescent-shaped, chitinous piece in the labium ; c, costa superior ; c7, 

 costa inferior; e, conical bases of the buccal set.ie ;/, oesophagus ; g, buc- 

 cal setae. 64 diameters. Page 318. 



Fig. 36. Young lice settled on the underside of a soft-maple leaf. 

 Natural size. Page 30.5. 



Fig. 37. Males and females on the underside of a maple leaf in Au- 

 gust, at the time of the appearance of the males. Natural size. Page 324. 



Fig. 38. Females on twig in winter. Natural size. Page 324. 



Fig. 39. Females on twig about commencement of egg-laying ; a, 

 dark colored parasitized female ; 6, female in process of excreting a drop 

 of honey-dew ; c, female with egg-nest just beginning to form. Natural 

 size. Page 325. 



Fig. 40. A female just before beginning to lay eggs ; a, from above ; 

 6, from below; showing the markings, and the position, and compara- 

 tively small size of the legs and antennse. Natural size. Page 325. 



Figs. 41,-42. Females with egg-nests, more or less fully formed. 

 Natural size. Page 331. 



Fig. 43. Mouth pans of female pupa just before final moult ; a, 6, and 

 a^,b\ conical bases of new setje in spiral coils; c, areus superior; d. 

 arcus inferior; e, oesophagus ;/, labium, or sheath ; g, loop of old setse in 

 abdomen ; h, base of outer pair of old setae ; i, base of inner pair of old 

 setae; fc, clav us. 112 diameters. Pages 306, 3I4. 



Fig. 44. Wax secreting glands attached to ventral pores of female ; 

 a, gland ; 6,-c, tube leading to pore, the portion c being larger than b; cZ, 

 pore. 160 diameters. Page 321. 



Fig. 45. Generative organs of the male ; a, <i\ vessels containing 

 spermatozoa ; bJV, slender tubes connecting with ductus ejaculatorius ; c, 

 ductus ejaculatorius ; d, dorsal portion or sheath of the penis : e, ventras 

 portion or valve of the penis ; /'./. anal filaments ; (/, lateral prolongation, 

 of the seventh segment; h,h\ sides of the abdomen, i,V glands secret- 

 ing the anal filaments. 56 diameters. Page 312. 



Fig. 46. Detached bundle of spermatozoa from male. 68 diameters. 

 Fig. 46(t. End of a spermatozoon magnified 457 diameters. Page 312. 



Fig. 47. Female generative organs in May, several weeks before the 

 first eggs are laid; a, spermatheca; ?>, neck of vagina; c, vagina; d, 

 vulva; k, and I, cavities in vagina ; e,e', oviducts ; /,/^, vaginal glands ; 

 g.g^ ; spindle-shaped ducts ; h, outlets of vaginal glands. 56 diameters. 

 Page 323. 



Fig 48. Nervous system of female ; a, supra-oesophageal or cephalic 

 ganglion ; b, infra-cesophageal or thoracic ganglion ; e, main dorsal nerve ; 

 d,d\ k,h\ c,c', lateral nerves [probably to the legs] ; l,V ; antennal nerves; 

 m,m'', optic nerves ; /i, costa superior; g, costa inferior; /,/'', salivary 

 glands ; i, oesophagus. 56 diameters. Page 322. 



