TYPE MATERIAL OF STEGOCEPHALIDAE 

Fig. 32 Stegocephaloides boxshalli sp.nov., holotype. 
Mouthparts not elongate or pointed. 
Mandible incisor lateral; incisor toothed; left lacinia mobilis 
present, powerful, laterally expanded, not conical. 
Maxilla 1 palp 1-articulate, rectangular, apex not reaching beyond 
outer plate; outer plate distally rectangular; ST in a pseudocrown, 
ST first row with 6 setae (ST1-5, ST7), ST 1 conspicuously en- 
larged; ST A present; located distally and part of first row, ST B—C 
present, part of second row, ST D absent; inner plate with a weakly 
developed shoulder, setae pappopectinate. 
Maxilla 2 gaping and geniculate, outer plate setae with distal 
hooks present, distal cleft absent; inner plate setae row A covering 
about two thirds of the margin, clearly separated from row B, row A 
setae pappopectinate; row B setae proximally pappose, distally with 
cusps present; row C present; row D present, expanded and elon- 
gated beyond row A, with many small cusps distally. 
Maxilliped palp 4-articulate, article 2 distally produced, distal 
inner margin weakly produced, dactylus distally simple (pointed); 
inner plate with 2 nodular setae; medial setae-row present, re- 
duced to one or two setae but differentiated from distal row, 
transverse, setae pectinate; distal setae-row present, setae simple; 
inner setae-row present, setae not conspicuously large; outer plate 
outer setae-row present, marginal, setae attached in a deep hollow, 
setae short and strongly curved upwards (hooks); inner setae-row 
present but strongly reduced, setae short, simple and slender, 
proximally parallel to outer and distally transverse; distal setae- 

Fig. 33. Stegocephaloides boxshalli sp.nov., holotype. 
group present, setae attached in a deep hollow, setae short simple. 
Labrum elongate; lobes asymmetrical, right lobe not reduced, left 
lobe reduced. 
Labium distally narrowing. 
Coxal plates and basis of pereopods smooth. Coxae 1—3 contigu- 
ous. 
Pereopod 1| coxa deeper than basis; propodus subovate. 
Pereopod 2 longer and thinner than pereopod 1, ischium not 
elongate, ratio length:breadth not exceeding 1.5, ischium distal 
posterior margin with plumose setae; propodus subrectangular, 
palm absent. 
Pereopod 4 coxa posteroventral lobe large, reaching about the 
base of the 7th pereon segment; basis anterior margin without long 
setae, posterior margin with long setae, plumose setae on distal 
anterior margin, no plumose setae on distal posterior margin; is- 
chium with plumose setae on posterior distal margin. 
Pereopod 6 basis posteriorly expanded, expansion rudimentary, 
with a row of long plumose setae present. 
Pereopod 7 basis anterior margin straight, distally rounded, with 
a medial row of short and robust setae. 
Oostegites on pereopods 2-5. Gills on pereopods 2-7. 
Pleonites 1-3 dorsally smooth. 
Urosome: articulation between urosome segments 2 and 3 present. 
Uropod | peduncle longer than rami, outer ramus as long as inner. 
Uropod 2 peduncle as long as rami, outer ramus shorter than inner. 
