124 Rowland M. Shelley 



is a large, variably cupulate projection from the medial surface with a 

 variably serrate to strongly toothed and jagged distal margin. This 

 structure further varies from a simple curved lamella, with a variably 

 irregular distal margin, to one with two or three marginal lobes or 

 folds, also with variably irregular distal margins. 



Acropodite — Except for Montaphe paraphoena, chonaphine 

 acropodites vary from narrowly blade-like to acicular, and though 

 devoid of secondary structures, hold taxonomic utility in the general 

 form of their curvatures and in their positions relative to the prefemoral 

 process. Disposing first of M. paraphoena, its acropodite expands 

 basally into a thickened, flange-like overhang on the outer medial 

 surface and a strong lateral spine, which is positioned opposite the 

 terminal expansion of the prefemoral process and is obscured by the 

 latter in medial view (Figs. 42-43). Distally, the acropodite narrows 

 somewhat and curls in a broad, open loop that encompasses the entire 

 prefemoral process. By contrast in M. elrodi, the acropodite is typical 

 for the tribe, being narrow basally and becoming still narrower and 

 subacicular distad. It usually curls over the prefemoral process at the 

 level of the latter's bend, but occasionally it is distended and lies 

 subparallel to the prefemoral process (Figs. 35-38). 



In both Metaxycheir and Tubaphe, the acropodite curves in the 

 form of a broad, open loop, through essentially a single vertical plane 

 in the latter and through more than one plane in the former. The 

 structure is broader and blade-like in Metaxycheir, and its loop extends 

 beyond the distalmost point of the prefemoral process (Figs. 52-53). 

 In Tubaphe the acropodite is narrower, becoming acicular distad, and 

 the prefemoral process extends either through the loop or below it 

 (Figs. 47-48). 



Chonaphe and Semionellus are the only two genera with truly 

 acicular acropodites. In Chonaphe it curls around the prefemoral process, 

 inserts onto the shelf, being obscured by the shield, and curves distad 

 along the projection's medial face (Figs. 4-7, 10-13, 22-25). Occasionally 

 the acropodite is displaced and curls above the shelf, thus being clearly 

 visible for its entire length (Figs. 16-19). In Semionellus the structure 

 bends strongly basally, is sublinear for most of its length, and curves 

 broadly distad (Figs. 30-31). It typically lies below, and runs generally 

 parallel to, the prefemoral process, but in a few males, it passes 

 through the curvature of the proximal flange. In Chonaphe, the acropodite 

 is somewhat coiled and passes through numerous vertical planes, whereas 

 in Semionellus, the structure is nearly uniplanar. 



Cyphopods — The female genitalia are positioned transversely in 

 the cyphopodal aperture, which encircles the 2nd legs on segment 3; 



