74 Nothrus 



Im. Light chestnut-brown, dull, reticulated, almost oblong; reticulations 

 on Cephth. and lat. part, of Abd. ca. 8 |u on ventral part of Abd. ca. 16 |u. 

 Psstg. on chitinous mammillae ; a longitudinal sulcation between them. Psstg. 

 org. long, curved, filiform. Intlam. hair similar but shorter and thicker. 

 Coxae 3 and 4 inserted in tubular projections of sternal plate. Ung. mond. 

 Abd. almost oblong. Lat. parts of Abd. sharply raised at an angle, parti- 

 cularly anteriorly. Ant. margin of Abd. raised; central part of Dors, of 

 Abd. slightly arched; 4 rows of thick, curved, slightly spatulate, slightly 

 imbricated, white hairs on Dors, of Abd., 2 pairs on post, margin sessile, 

 and a few others. - - Nph. Very like Im., but Abd. yellowish white and 

 with raised dots instead of reticulations, but post, angles project and there 

 are 2 projections near centre of post, margin lower in level and bearing 

 hairs. - - Im. L. ca. 660 jn. 



Algeria, England, France. 



18. N. tardus Michael 1888 N. t., Michael, Brit. Orib., v. 2 p. 526 t. 47 f. 14 | 

 1896 Angelia tarda, Berlese, A. M. S., Crypt. II p. 26. 



Im. Yellow-brown, finely and evenly reticulated, reticulations about 3 |u. 

 No exterior Psstg. of the ordinary type but a long setiform hair on each 

 side which is the homologue either of the Psstg. org. or the Intlam. hair. 

 Legs very short, thick, pairs 3 and 4 set under Abd. Ung. kid. Abd. flat, 

 shield-shaped, ant. margin straight, but antero-lat. corners of Abd. form 

 rounded projections each bearing a large hair directed outward. Central 

 and lat. parts of Dors, of Abd. slightly raised and rounded leaving a 

 shallow depression between, 2 longitudinal rows of about 3 hairs on Dors, 

 of Abd. - Nph. Like Im. but cuticle softer, not reticulated and with 

 numerous broad wrinkles. - - Im. L. ca, 360 ju. 



On lichen. England. 



19. N. targionii Berl. 1885 N. T., Berlese, A. M.S., fasc.17 nr.8 | 1888 N. T., 

 Michael, Brit. Orib., v. 2 p. 488 t. 47 A f. 11 ! 1896 Angelia T., Berlese. A. M. S., 

 Crypt. II p. 26. 



Im. Dark brown. Cephth. pitted. Abd. smooth, not polished ; Host, small, 

 leg 1 set in deep excavation. Psstg. org. long filiform. Legs fringed 

 with thick curved hairs; Ung. mond. Abd. long, truncated anteriorly 

 rounded posteriorly hollow in centre; lat. and ant. margins sharply 

 raised, post, raised gradually; 4 large and 2 small apophyses on post, 

 margin bearing large, thick, sharply curved hairs; 4 similar hairs without 

 apophyses on each side of Abd. and some small hairs on Dors, of Abd., all 

 the large curved hairs on the creature are villous. L. ca. 830 |u. 



This species is an approach to a Hermannia. particularly H. bistriata. 

 England, Italy; rare. 



N. pileiformis Karp. 1883 N. p., Karpelles in: Berlin, ent. Z., v. 28 p. 87. 



Im. Dark-brown, oval, broad anteriorly, slender posteriorly. Pileus-shaped 

 when seen from side; carries cast skins of Dors, of Abd. each of which has a wedge-shaped 

 incision. No hairs on body. Ung. trid. L. ? Probably a good species, but imper- 

 fectly described from broken specimens in Berlin Museum. 



Pennsylvania. 



N. quadracanthus Haupt 1882 N. q., Haupt in: Ber. Ges. Bamberg, v. 12 p. 24. 

 Im. Apparently like N. spinifer, but post, margin of Abd. more like N. horridus. L.? 

 In moss. Germany. 



