162 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



palpus; m, mentum; md, mandible; mp, maxillary palpus; of I, anterior part 

 of occipital foramen; of II, posterior part of occipital foramen; oc, compound 

 eye; pr, half part of proboscis; SHI, submentum; tb, bridge of tentorium; 

 si, stipes. 



Fig. 18, mouth frame and mandible with musculature, dorsal view; ab, 

 abductor muscle of mandible ; ad, adductor muscle of mandible ; d, dorsal 

 process of mouth frame on which fossa of the mandible articulates; mf, 

 mouth frame; t, tendon; v, ventral socket of mouth frame on which condy- 

 lus of mandible articulates. 



PLATE XIII. Mnemonica auricyanea Walsingham, pupa. 



Fig. 19, lateral view; pt, patagium. 



Fig. 20, ventral view. 



Fig. 21, dorsal view; x, thin-walled dorsal appendices. 



PLATE XIV. Mnemonica auricyanea Walsingham, imago. 



Fig. 22, lateral view of head; ant, antenna; e, epistoma; epc, epicranium; 

 /, front; Ip, labial palpus; I, labrum; md, mandible; mf, mouth frame; 

 mp, maxillary palpus; ocl, ocellus; pi, post-labrum; pr, proboscis. 



Fig. 23, epipharynx and hypopharynx; mm, membrane of mouth; ex, epi- 

 pharynx; hx, hypopharynx; pap, sensory papilla; ph, pharynx; sc, scales; 

 w, sensory wart. 



Fig. 24, dorsal view of head; an, antennal ring; epc, epicranium;/, front; 

 oc, compound eye; ocl, simple eye; ha, hair-bearing area. 



Fig. 25, apex of right half of proboscis from inner side. 



Fig. 26, base of right half of proboscis from inner side; ci, cilia belonging 

 to the external parallel series; fri, stiff connecting fringes of ventral mar- 

 gin; th, transverse ring-structure. 



Fig. 27, ventral view of head; ex, epipharynx; h, hypostoma; hx, hypo- 

 pharynx; m, attachment of mentum; md, mandible; mx, attachment of 

 maxilla; of I, anterior portion of occipital foramen; of II, posterior portion 

 of occipital foramen; tb, bridge of tentorium; v, ventral mandibular articu- 

 lation. 



Fig. 28, ventral side of labium; Ip, labial palpus; m, mentum; VR, organ 

 discovered by Von Rath. 



Fig. 29, buccal surface of left maxilla; c, cardo; gl, basal joint of galea; 

 gll, terminal joint of galea developed as left half of proboscis; h, hypo- 

 stoma; mp, maxillary palpus; pig, palpiger; sgl, subgalea. 



Fig. 30, ventral side of right maxilla; c, cardo; gl, basal joint of galea; 

 gll, terminal joint of galea; mp, maxillary palpus; pig, palpiger; sg, sub- 

 galea; si, stipes. 



PLATE XV. Mnemonica auricyanea Walsingham, imago, figs. 31-33. 



Fig. 31, ventral view of right mandible; ab, abductor muscle; ad, adduc- 

 tor muscle; t, tendon. 



Fig. 32, frontal view of head; ant, antenna; epc, epicranium; e, epistoma; 

 /, front; Ir, labrum; Ip, labial palpus; m, mentum; md, mandible; mp, max- 

 illary palpus; pi, post-labrum; pig, palpiger; pr, proboscis (= terminal 

 joint of galea); sm, submentum. 



