Bimastos jordanis Csuzdi & Pavlicek, 1999

External characters. Holotype: length 65 mm, diameter 9 mm, no. segments 185. Paratypes: length 75-120 mm, diam. 7-10 mm, no. segments 140-210. Colour in alcohol: dark with postclitellar dorsal band. Prostomium 1/3 epilobous closed. First dorsal pore in intersegmental furrow 5/6. Setae unpaired, setal formula at segment xxxvi:aa:ab:bc:cd:dd = 2.6:1.3:1.5:1:4.8. Female pores on segment xiv somewhat above setae a. Male pores on posterior part of segment xv between setal line a-b surrounded by a genital ridge situated on segment 1/2 xiv-xvi and detached by a small groove. Flat spermatophores on  segment xiv-xv. Nephridial pores irregularly alternate between setal lines b and d. Clitellum on segment (1/2 xxvi) xxvii-xxxiii, clitellar stripes on segments xxvii-xxxii. Genital papillae are ab in ix-xii. Genital setae lacking.

Internal characters. Septa 5/6-8/9, 14/15 slightly thickened, 9/10-13/14 strongly muscular. Testes and funnels paired in segments x-xi, free. Seminal vesicles present in xi, xii. Epididymis and spermathecae lacking. Calciferous diverticula in x. Paired lateral hearts in segments vi-xi and a pair of small comissure in segment xii. Nephridial bladders tube-shaped. Crop in xv-xvi, gizzard in xvii-xx. Typhlosole large, bilobed, anchor-shaped. Longitudinal muscle layers of body wall of pinnate type.

Distribution - Endemic in Israel.