26 Oribata, Serrariinae, Serrarius 



O. pinnata Gerv. 1849 0. p., Gervais in : Gay, Hist. Chile, v. 4 p. 48. 



Im. Body oval. Description insufficient for identification. 



Chili. 



O. pratensis Banks 1895 O.jp., Banks in: Tr. Amer. ent. Soc., v. 22 p. 6. 



Im. Yellowish or reddish. Lam. short. Trlam. a ridge. Intlam. hair long, Psstg. 

 org. short capitate. Dors, of Abd. arched hairless, 3 small smooth spots each side. 

 Ptm. small, long, triangular; a short clavate figure in front of anal opening. Ung. 

 trid. L. 700 ja. Possibly 0. lapidaria. 



New York State. 



O. reticulata L. Koch 1879 0. r., L. Koch in: Svenska Ak. Handl. v. 16 p. 115. 



Im. Imperfectly described from a single specimen and not figured, probably 

 very like 0. orbicularis, but long hairs on Dors, of Abd. L. 1 mm. 

 Siberia (Yeniseisk). 



O. robusta Banks 1895 0. r., Banks in: Tr. Amer. ent. Soc., v. 22 p. 7. 



Im. Black, yellowish near ant. margin of Abd. apparently very like 0. dorsalis, 

 distal margin of Ptm. said not to be sinuated (emarginate). L. 750 |u. 

 Chicago, Illinois, Texas. 



O. signata (Banks) 1895 Oribatella s., Banks in: Tr. Amer. ent. Soc., v.22 p. 9. 



Im. Dark reddish brown; a pale patch on Dors, of Abd. near ant. margin. 



Abd. convex, smooth. Lam. long, reaching tip of Rost. truncate anteriorly. C. lam. 



long, said to be a stiff bristle at each corner (2 all 4 or 2 only). Intlam. hair long, 



curved, directed forward; Psstg. org. long, clavate. Abd. longer than broad. Ptm. 



moderately large, triangular, projecting somewhat anteriorly. Apparently some- 

 what allied to 0. tecta. L. 450 |u. 



New York State. 



O. simplex Gerv. 1849 0. s., Gervais in : Gay, Hist. Chile, v. 4 p. 49. 

 Body oval. Ptm. scarcely visible. Description insufficient for identification. 

 Chili. 



O. sp., Banks 1895 Oribatella setosa (non Oribates setosus C. L. Koch 1840!), 

 Banks in : J. N. York ent. Soc., v. 3 p. 128. 



Im. Red-brown; a pale spot on Dors, of Abd. near ant. margin. Body longer 

 than broad. Lam. short; C. lam. long, spine-like. Intlam. hair erect, nearly as long 

 as leg 1. Psstg. org. nearly 2 / s the length of Intlam. hair, slightly clavate. Abd. smooth, 

 evenly convex. Ptm. large, somewhat triangular, tip rounded. Post, margin oblique. 

 Probably has a Trlam. Ung. trid. L. 480 |u. 



In Sphagnum-swamp. New York State. 



B. Subfam. Serrariinae 



Without Ptm. Cephth. anchylosed to Abd. Ventr. plate anchylosed 

 to dors, plate. Mdb. rod-like serrated at distal end, not eh el ate. 



1 genus with 2 species. 



1. Gen. Serrarius Michael 



1883 Serrarius, Michael in: J. R. micr. Soc., ser. 2 v, 3 p. 25 j 1884 S., Michael, 

 Brit. Orib., v. 1 p. 270 j 1896 S., Berlese, A. M. S., Crypt, II p. 56 1885 Neozetes, Ber- 

 lese, A. M. S., fasc. 20 nr. 6. 



