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setae on upper margin; peduncle bearing about 12spines, 3 of which are relatively large basofacial (cf.H. samacos). Uropod 2: inner ramus subequal inlength to outer, with apical spines and row of ratherlong plumose setae on lower margin; outer ramuswith about 5 apical spines; peduncle subequal torami in length, anned with about 3 spines. Uropod 3relatively long, about 22 % length of body; rami ofequal length but outer bearing spines only (in clustersof 2 or 3) on outer margin; inner margin ofouter ramus and both margins of inner ramus withspines and plumose setae. Telson rather long, about25% longer than broad; apical margin with deep,V-shaped cleft extending ca. 75 % distance to base;apical lobes bearing 4 or 5 apical spines each; lateralmargins lacking spines.Type-Iocality.-Emerald Sink (or EmeraldCave), located on the Stockton Plateau in Val VerdeCo., Texas (see Fig. 12), extends to a depth of approximately91 m below the entrance and contains adeep lake of phreatic water on the lower level. Thecave is excavated in limestones of the Buda andDevils River formations of Cretaceous age; a descriptionof the cave was published by Kunath andSmith (1968).Relationship.-Although this species does notFig. 8.-Holsingerius smaragdinus, new species, paratype female (8.0 mm), Emerald Sink, Val Verde Co., TX: A, B, gnathopodsI, 2 (palms enlarged), C, D, uropods I, 2; E, telson. (Gnathopods to smaller scale than uropods and telson.)14