222 Annals of the South African Museum. 



1904. Janiropsis, Bichardson, Proc. U.S. Nat. Mus. 27, p. 665. 

 1910. Thielemann, Abh. Ak. Wiss, Miinchen. Suppl. 2, 



Abh. 3, p. 70. 



IANIROPSIS PALPALIS, n. sp. 

 (Plate XXI. A.) 



Body nearly parallel-sided ; surface smooth, only a few short 

 setae on the lateral margins. 



Head, anterior margin not very produced, front slightly concave, 

 antero-lateral angles obsolete, eyes small, oblong, dark, some little 

 distance from the lateral margin. 



Peraeon, antero-lateral angles not much produced, side-plates 

 bilobed. 



Pleon rather longer than broad, tapering very gently, apex flatly 

 rounded, with a row of setae, postero-lateral angles not prominent, 

 with a row of setae, margins entire. 



First antenna reaches to middle of 5th peduncular joint of second 

 antenna, basal joint strongest, 3rd joint a little longer but more 

 slender than 2nd, 4th joint very small, flagellum 10-jointed in 3 , 

 7-jointed in ? , with only a few sensory filaments. 



Second antenna longer than body, exopod on 3rd joint well 

 developed, setiferous, 5th joint a little shorter than 6th, flagellum 

 about as long as peduncle, multiarticulate, feebly setose. 



Upper lip as broad as long, with fine apical setae. 



Lower lip, lobes broad, inner and outer margins equally 

 convex, so that inner angle becomes an apical angle, beset with 

 setae. 



Mandibles, cutting-edge with 5 teeth, secondary cutting-edge in 

 left mandible with 5 teeth, spine-row with 6 spines and a blunt tooth 

 below them, molar prominent, denticulate, 2nd joint of palp slightly 

 the longest, with 2 long stout setae, 3rd joint curved, with apical and 

 marginal setae. 



First maxilla, outer plate with ca. 10 serrate spines, inner plate 

 with 4 spines and several setules. 



Second maxilla, outer and middle plates with 3 spines, inner plate 

 not quite twice as broad, with several spines and setules. 



Maxillipeds $ , width of 2nd joint equal to inner margin, 4th joint 

 very broad, expanded on both margins, 5th joint as long as 1, 2, 3 

 combined, 6th joint slender and a little shorter than 5th, 7th joint 

 still more slender and a little shorter than 6th, inner plate rounded- 

 truncate, with apical spines and 2 stout coupling-hooks near its base, 



