new Genera of Zephroniide. 413 
Genus ZEPHRONIA, Gray. 
Zephronia, Gray, Griffith’s Animal Kingdom, xiv. pl. exxxv. fig. 5; 
also xv. p. 796 (1882). 
Vulva composed of two pieces, a proximal hairy piece 
bearing the aperture and a distal usually polished piece. 
Copulatory feet. Movable digit of anterior pair either larger 
or smaller than the immovable, not strongly toothed, and with 
its apex often segmented off; movable digit of posterior pair 
bisegmented. 
Tarsi distally narrowed, claw terminal, the upper spine 
close to but behind the claw. 
Type Z. ovalis, Gray. 
Distribution. Assam, Burma, Java. 
Zephronia anthracina, sp. n. 
Entirely black, shining; tergites exceedingly minutely and 
closely punctured, smoothrin front ; anal tergite with its ante- 
rior and posterior margin smooth, the rest of its surface 
minutely and closely punctate ; lamina of second tergite very 
large ; two spines above the claw. 
Length 52 millim. 
Loc. Perak (Malay Peninsula). 
Zephronia tmpunctata, sp. n. 
Allied to Z. anthracina and Z. semilevis. 
Pitchy black, the posterior borders of the terga obscurely 
ferruginous ; legs olivaceous. 
Terga polished ; the anal and the posterior borders of the 
eleventh and twelfth minutely punctulate. 
Length 36 millim. 
Loc. Penang (Mr. Stanley Flower, Northumberland Fu- 
siliers). 
Zephronia Dollfust, sp. n. 
Olivaceous. Tergites exceedingly finely and closely punc- 
tured throughout. Lamina of the tergite scarcely developed ; 
anal tergite evenly convex, inner crest represented by a black 
tubercle. One spine above the claw. 
Length 28°5 millim. 
Loe. Cochin China (Adrien Dollfus). 
Genus CASTANOTHERIUM, nov. 
Resembles Zephronia in most particulars, but differs in that 
