414 Dr. David Sharp <>)i ihe strncture of the 



seen on each side as a small, polished, curved process, 

 projecting inwards from the lateral wall of the chamber, 

 which is itself here prominent and projecting inwards. 



26. Calidea haw (subfam. Scutellerince). Hab. Hima- 

 laya. — The terminal segment in the male, when extracted, 

 appears to be entirely closed behind by a polished cm'tain, 

 extending from the roof to the floor, and marked down 

 the middle by a longitudinal groove ; this curtain is the 

 posterior face of the rectal-cauda, which is peculiar ; the 

 anterior face of the cauda is quite membranous, pallid 

 in colour, and totally different from the external face ; 

 the tip of the cauda is closed by a membrane. On 

 taking off the cauda it is found that the parts covered 

 by it are difficult to distinguish well, being seated far 

 forwards, and much enclosed ; the theca is placed at the 

 bottom of the segment, and from it projects forwards 

 and upwards ; this consists (so far as I can see in one 

 example and without dissection) of five elongate rods, 

 connected by a material of less hard texture, and of 

 more pallid colour. The lateral appendages form two 

 shell-like laminse, placed just behind the theca, and very 

 deeply seated. The inferior process is a carina forming 

 an niverted arch, whose arms are directed much forwards 

 as well as upwards. There is a very prominent hooked 

 process fixed to each side of the inner wall of the 

 chamber, near its upper part. 



27. Brachyplatys sp. ? (subfam. Platasjyina) . Hab. 

 Old Calabar. Fig. 20, PI. XIV.— The lip of the terminal 

 chamber projects beyond the body so as to form a fioor 

 (the shaded part in figure, which is really horizontal in 

 direction, though in the figure it looks perpendicular) ; 

 there are no sides to the chamber, and the rectal-cauda 

 has a small process closely applied to the extremity of 

 the body and exposed posteriorly, though somewhat pro- 

 tected above by the slightly overhanging termination of 

 the seutellum. The lateral appendages form two slender 

 filaments. In the figure they are represented too large 

 and not sufficiently close to the roof, or hind margin, of 

 the seutellum. 



28. Brachyplatys sp. ? (subfam. Plata sjnncs). Hab. 

 Marosika, Madagascar (Cowan). Fig. 27, Fl. XIV. — The 

 terminal chamber has here disappeared, and the rectal- 



