NOTASPIS LAOUSTRIS. 399 



and slender f asiform heads, each head terminated hy a 

 single bristle. Interlamellar hairs long and setiforni, 

 standing erect. Second tectopedia well developed. 

 Apodemata joined to the sternum. 



Legs rather long, posterior pair extending consider- 

 ably beyond the hind margin ; slender. Femora with- 

 out blades ; claws monodactyle. Long tactile hairs on 

 all tibige ; a whorl of rather long, fine hairs on each of 

 the three central joints of each leg, tarsi amply pro- 

 vided with fine hairs, and a few other rather long hairs 

 on the various joints. 



Abdomen a long oval, the larger end forward ; it is 

 without markings but has four longitudinal rows of 

 rather long fine hairs, and there is a short spine on the 

 anterior margin on each side, a little behind the 

 pseudo-stigma. Genital and anal plates very large 

 and close together, almost pentagonal. 



Distribution. — Usually in moss, common and gene- 

 rally distributed. 



JSToTASPis LAOUSTRIS,* Michael. PI. XXXIII, figs. 1 — 9 ; 

 PI. XXX, fig. 12. 



Notasijis lacustris, Michael. Jonrn. Roy. Microsc. Soc, ser. ii, 



vol. ii, p. 12. 



Average length about '50 mm. 

 Average breadth about 'SS mm. 

 Average length of legs (first and second pairs) about 

 •30 mm. 



Average length of legs (third pair) about '26 mm. 

 Average length of legs (fourth pair) about '40 mm. 



This is strictly an aquatic species, but it is not 

 properly a swimming creature, indeed I am not aware 

 that any of the Orihatidce are ; it crawls about sub- 

 aqueous plants, and is confined to fresh water, usually 

 ponds or other water which is standing without being 

 * Lacustris, belonging to lakes or ponds. 



