EXPLANATION OF PLATE 62. 



Anatomy of Anosia plexippus. 



The original ilrawings were made from dissections of liis own liy >Ir. Edward Burgess, and most of them piib- 

 ished (in larger form) in liis paper in the Anniversary Memoirs of the Boston Society of Natural History, 1880. 

 Fig. 5, however, was made for this work, from dissections of his own, by Mr. J. H. Emerton. 



In all the figures the segments of the thorax are indicated by Roman, of the abdomen by Arabic, numerals. 



1. External anatomy of the female butterfly, side 

 view: a, antenna; o, occiput; cl, clypeus; mx, 

 maxilla; p. labial palpus; .<!, .scutum; sm, scutel- 

 lum ; psm, potstscntellura ; eptn, epimerum; eps, 

 epjsternum ; ex. coxa ; tr, trochanter ; /, femur ; all 

 these parts receive a special number indicating the 

 segment of the thorax to wliich they respectively 

 belong; sp, prothoracic spiracle; ic',!'/, fore and 

 hind wings ; sp^, sp^, third and eighth pairs of spi- 

 racles. Membranous portions dotted. 



2. Internal anatomy of the same, as seen on a 

 side view. (The body wall, tracheae and fat bodies 

 are removed). Xumerals as before: //ft, pharynx; 

 sd, sgl, salivary duct and gland of right side ; oe, 

 oesophagus; fr, food reservoir; st, stomach; i, 

 small- intestine ; c, colon; r, rectum; a, anns; mv, 

 malpighian vessels; ft, heart or dorsal vessel; ao, 

 aorta; ac, aortal chamber; hr, brain; </', suboeso- 

 phageal ganglion ; t</, compound thoracic ganglia ; 

 ag', ag*, first and fourth abdominal ganglia; cp, 

 copulatory pouch; v, vagina; o, oviduct; oo, its 

 external opening; r.ov, base of right ovarian tubes 

 turned down to expose the underlying organs ; l.ov, 

 left ovarian tubes in position ; ov.c, their termina- 

 tion ill four cords; sp, spermatheca ; a.gV, part of 

 the unpaired accessory gland ; (cgf, one of the paired 



accessory glands, of the other of which only the 

 base is shown. Other letters as in (ig. 1. 



3. Horizontal section through the extremity of 

 the male abdomen : p. penis with its extensor ep, and 

 retractor rp; ph. penis bulb; ps, sheath; <le, ductus 

 ejacuhitorius ; ft6, hair bundle cut oft"; sm, interseg- 

 mental muscles. 



4. Lateral view of the same abdomen showing 

 the genitalia in position : t. testis ; vd, the double 

 vas deferens ; pr, internal process of the ninth seg- 

 ment, atfording the attachment of the retractor 

 penis, its posterior wall cut away; c, clasp; /c, 

 false clasp. Other letters as in tigs. 2 and 3. 



5. Internal anatomy of the female pupa, about 

 three to four days old, as seen on a side view. (The 

 lateral wall and tracheae are removed.) : ts, tarsus; 

 cr, cremaster. Other letters as in figs. 1. and 2. 



6. Internal anatomy of the male caterpillar. (The 

 body wall, tracheae, fat bodies and muscles of the 

 body wall are removed.) : sv, spinning vessel of one 

 side; dr, dorsal vessel ; t, testis; s, spinneret; sog, 

 snboesophageal ganglion ; nc, nervous cord : g^,g^,g^, 

 third, sixth and ninth ganglia. Other letters as in 

 fig. 2. The salivary glands and the convolutions of 

 the malpighian vessels concealing the intestines are 

 not shown. 



