neto or rare Scottish Entomostraca. 213 



MORARIA*, gen. nov. (provisional name). 



Sonicuhat like CyUndropsyllus^ Brady, in general form and 

 structure, but the posterior foot-jaws are three-jointed ; the 

 outer branches of the fourtli pair of ssvimming-fcct in tiie 

 female are similar to those of the second and third pairs, and 

 the fifrii pair are two-branched and nearly as in Attheyella 

 cryptorum, Brady. 



This genus is instituted, provisionally, to include an inter- 

 esting Harpactid from Loch Morar, Argyleshire, having 

 characters connecting the freshwater species Attheyella cryp- 

 torum, Brady, with the marine Cylindropsyllus Icevis, Brady. 



Moraria Anderson- Smithi, sp. n. (PI. VII I. figs. 1-14.) 



Female. — Length exclusiveof tail-setse "62 millim. (jj inch). 

 Body elongate-cylindrical. Anterior antenna3 short, mode- 

 rately stout, seven-jointed ; the upper distal angle of the 

 fourth joint is strongly produced, and forms the base of a 

 stout olfactory appendage ; the last joint is rather longer than 

 any of the others. The relative length of the joints is shown 

 in the formula — 



6—8—6—5—5—7—10 

 1— 2— 3— 4— 5- (>— 7 * 



Posterior antenna? (fig. 5) small, three-jointed ; a small one- 

 jointed secondary branch, with a few small apical seta3, springs 

 from the middle of the second joint. Mandibles with a mode- 

 rately broad biting part, armed with five cylindrical teeth and 

 a small seta; palp small, composed of a single two-jointed 

 branch. Maxillte simple ; primary branch broadly truncate, 

 with five moderately large apical spines ; secondary appen- 

 dage bilobed ; the exterior and larger lobe bears a stout 

 terminal spine, plumose on the distal half; the smaller lobe 

 terminates in a plain spiniform seta. Anterior foot-jaws 

 (fig. 8) short, stout, furnished with a terminal claw-like spine 

 and two marginal processes, each process terminating in a 

 moderately stout spine, and a curved spine-like seta plumose 

 on the inner edge. Posterior foot-jaws three-jointed, the last 

 joint being very short, and armed with a long terminal claw ; 

 the proximal half of the inner margin of the second joint is 

 furnished with several short setae; a stout, setiferous, spini- 

 form appendage springs from the inner distal angle of the 

 first joint. Outer branches of the first four pairs of swimming- 



* From Loch Morar, Argyleshire. 

 Ann. & Mag. N. Hist. Ser. 6. Vol. xi. 16 



