77 



clothed with long, clavate, scales. Canaliculus a long 

 groove. Saccus rounded. Coremata on seventh segment. 



Ostium large. Ductus bursse short, with a hook. 

 Bursa thickened in parts. Signum ovate, scobinate. 



Chesiadinae. 



The remaining six species appear to form a distinct group, 

 in which the chief characteristic is the acicular /Edoeagus. 

 The peculiar form of the female connects plagiata and 

 paludata together, although the male organs show a great 

 divergence. Spartiata and rufata are closely allied in both 

 sexes. The formation of the canaliculus in these latter 

 species is peculiar. It possesses at either side a hollow 

 raised protruberance , which no doubt acts as a guide for 

 the slender a^dceagus. 



Anaitis plagiata, L. 3 3 



Valva very large, elongate, bifurcate at apex. Transtilla 

 separated, naked, tips curled, rounded. Uncus tapered, 

 very broad at base. jEdceagus acicular, sigmoid. Ductus 

 ejaculatorius scobinate. Anellus lobes peaked. Juxta 

 strong. Saccus broad, deep, rounded. 



Ostium narrow. Ductus bursa3 long, thickened, 

 bifurcate, at the junction with the bursa. 



(Carsia) paludata, Thunb. 54 



Valvula short; costa broad, emarginate, produced in 

 pointed arm from the centre of the valva; sacculus pro- 

 duced, very weak. Transtilla lobed, hairy. Uncus 

 clavate; pads hairy. .-Edoeagus acicular, sigmoid. Ductus 

 ejaculatorius broad, ovate, scobinate. Anellus lobes 

 produced, hairy. Cristae forming papilla3 at the base of the 

 juxta. Saccus very long, pointed. 



Ostium small, weak. Ductus bursse thickened and 

 bifurcate at the junction with the bursa. 



Chesias spartiata, Fues. 64 



Valva rounded; costa incurved, pointed, not produced. 

 Uncus long, widest towards centre; pads with three or four 



