Psyche 
[September 
1 68 
strongly obliquely oriented to long axis of the head. Mandible. 
Teeth fundamentally heterogenous; those of about 3/4 of the distal 
margin aciculate and hyaline, thinly filamentous; those remaining 
abruptly longer and more robust. First maxillae. Coxosternum: 
Medially continuous with division, diastema or suture; lappets 
absent. Telopodite: Distinctly bipartite; with a large, fleshy lappet, 
this largely concealed from ventral aspect. Dorsal surfaces of medial 
lobes and telopodites very densely clothed with minute setae. Second 
maxillae. Isthmus anteroposteriorly very shallow but without 
diastema or division of any kind. Postmaxillary sclerite very extensive, 
extending anteromesally partly to occlude metameric pore opening. 
Telopodite: With prominent, strong dorsal and ventral basal condyles; 
articles inflate, robust, the 2nd and 3rd especially setose; terminal 
claw with numerous aciculate, long spines arising randomly on its 
distal half. Prosternum. Much wider than long. Anterior denticles 
abortive, low, weakly-developed. Pleuroprosternal sutures arching 
obliquely laterad, complete, ending dorsolaterally. Pleurograms 
(chitin lines) abortive, short, concursive with pleuroprosternal sutures. 
Prehensor. When flexed not exceeding anterior margin of head. 
In general very robust and short. Tarsungula dark, its length about 
equal to outer length of trochanteroprefemur ; dorsal and ventral edge 
of blade smooth, not serrulate; poison calyx very long, terminating 
in intercalary articles; poison gland terminating near base of troch- 
anteroprefemur. Denticles: Mesodistal denticle of trochanteropre- 
femur low and blunt; femorid and tibiid each with a minute rounded 
denticle; tarsungula without a basal denticle. Tergites. Basal plate 
anteriorly as wide as rear margin of cephalic plate, posteriorly as wide 
as first pedal tergite; color yellowish-brown except for very small 
unpigmented central area. Color: On anterior portion of body 
deeply yellowish-brown, thereafter gradually becoming paler; entirely 
without extensive unpigmented areas. Paramedial sulci : On anterior 
part of body essentially absent and pigmented (not unpigmented as in 
provocator ) ; thereafter gradually becoming more apparent. Setae 
short and relatively numerous. Spiracles. All strictly circular except 
for first 2-3 which are very slightly subcircular. Legs. Those of 
anterior third of body very robust and short, thereafter gradually 
becoming longer and more slender. Setae much longer and more 
numerous than in provocator. Pretarsi. Each unguis (claw proper) 
short and robust on anterior half of body, thereafter becoming longer 
and thinner. Each anterior parunguis thin and only about 1/3 as 
long as its unguis; each posterior parunguis so minute as easily to 
escape detection. Sternites. Those of anterior third of body each 
