TYPE MATERIAL OF STEGOCEPHALIDAE 

Fig. 30 Stegocephaloides calypsonis sp.nov., holotype. 
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 two parallel rows, 
first marginal and second submarginal, ST first row with 7 setae 
(ST1—5, ST7 and an additional ST located medially on outer plate), 
ST 1 ordinary (similar to ST 2-4), gap between ST 5 and ST 7 
present; ST A-C, part of second row, ST D absent; inner plate with 
a well 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 simple, 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 distal inner margin weakly 
produced, dactylus distally simple (pointed); inner plate with 2 
nodular setae; medial setae-row absent, distal setae-row present, 
setae simple; inner setae-row present, row reduced to one or two 
setae, 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-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 covered with very short 
setules. Coxae 1-3 contiguous. 
131 
Pereopod | 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 subovate, palm 
absent. 
Pereopod 4 coxa posteroventral lobe large, reaching about the 
base of the 7" pereon segment; basis anterior margin without long 
setae, posterior margin with long setae, no plumose setae on distal 
anterior and posterior margins; ischium with plumose setae on 
posterior distal margin. 
Pereopod 6 basis posteriorly expanded, expansion rudimentary, 
with a row of long plumose setae. 
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 longer than inner. 
Uropod 2 unknown. Uropod 3 peduncle longer than rami, outer 
ramus 2-articulate, outer ramus shorter than inner. 
Telson as long as broad, longer than peduncle uropod 3, cleft, 
apically rounded, no submarginal setae on apex of each lobe. 
MALE. Pereopod 2 propodus larger in males than in females. 
Urosome ordinary (similar to females). 
REMARKS. All five specimens were unfortunately lost in the mail 
after examination of the material, but before the description of the 
species was entirely finished. Four slides made from the holotype 
represent the only remaining material. Thus figures of uropod 2, 
epimeral plate 1 & 2 and habitus are not available. 
The present species has some affinities to S. attingens (see above), 
reflected in the fact that all five specimens registered for this species 
had initially been identified as S. attingens (indeed, the one speci- 
men identified by K.H. Barnard (1932) was among the type material 
of S. attingens). The two species are, however, separated by the basis 
of pereopod 7 (S. boxshalli is not pointed distally), by uropod 3 (S. 
boxshalli has a 2-articulate outer ramus) and by the shorter and more 
rounded telson of S. boxshalli. Furthermore, S. boxshalli can be 
separated from all other stegocephalid species by the presence of an 
additional ST on the outer margin of maxilla | outer plate. 
ETYMOLOGY. The present species is named after Prof. Geoff 
Boxshall (Natural History Museum in London) for his support and 
help with the first authors’ work on his Ph.D. thesis. 
Stegocephaloides ledoyeri sp. nov. 
(Figs 34-36) 
Stegocephaloides australis Ledoyer 1986:962 (non S. australis 
K.H. Barnard) 
MATERIAL EXAMINED. Holotype, SAM A15598, female 8mm. 
27°59.5'S 32°40.8'E, collected 22™ May 1976. Additional material: 
14 specimens identified as S. australis, see Ledoyer 1986:962. 
DISTRIBUTION. Known from South Africa and Madagascar. 
DESCRIPTION. Biology: not pelagic, otherwise unknown. 
Rostrum very small. 
Antennae short. Antenna | shorter than antenna 2 and longer than 
antenna 2; flagellum 6-articulate; accessory flagellum article 2 
present. Antenna 2 peduncle (articles 3—5) longer than flagellum; 
article 3 short, about as long as broad; article 4 shorter than article 5. 
Epistome curved (convex) and smooth; epistomal plate (medial 
keel) not produced. 
