62 Dr. W.T. Calman on a 
largely pale ; stigma dark brown; a broad brownish seam 
along vein Cu and narrower ones along the cord ; veins dark 
brown, those of the costal region more yellowish; strong 
setz in the apical eells of the wing from A, to Cu; Vena- 
tion: petiole of cell JZ, short ; m-—cu long. 
Abdomen rather long for the male sex of this genus of 
flies (about 12 mm.). Basal abdominal segments dull 
yellowish, segments 3 to 8 more brownish; tergites with a 
narrow, more or less distinct, dark brown sublateral stripe ; 
Jateral margins of the segments pale. Hypopygium yellowish, 
the sclerites fused into a ring. Region of the ninth tergite 
produced caudad into a broad depressed median lobe whose 
posterior margin is gently concave or feebly notched, with 
numerous minute blackened spicules. Outer pleural ap- 
pendage narrowed basally, broadened distally, the outer face 
densely covered with a long pale pubescence and a few long 
black setee. Inner pleural appendage with a posterior fleshy 
pale lobe whose proximal face is provided with long pale 
sete, the anterior blade compressed. Region of the ninth 
sternite profoundly incised beneath on the mid-ventral line. 
Highth sternite unarmed, the dorsal margin with a row of 
about eight black spinous setze. Ovipositor with the tergal 
valves acicular, the sternal valves shorter, compressed. 
Hab. South Africa. 
Holotype, §, Pretoria, Transvaal, December 5, 1918 
CA. did. Janse): 
Allotopotype, 2? , January 4, 1919. 
Paratopotype, , February 2, 1919. 
V.—A new Crab of the Genus Sesarma from Basra. 
By W. 'T. Catman, D.Sc. 
(Published by permission of the Trustees of the British Museum.) 
SPECIMENS of the crab described below have recently been 
presented to the Museum by Capt. C. L. Boulenger, who 
obtained them while on service in Mesopotamia. Other 
specimens from the same locality, and clearly of the same 
species, have been in the Museum for many years under the 
name ‘‘ Sesarma dehaani, Milue-Kidwards,” given to them by 
Mr. E. J. Miers. A comparison with Japanese and Chinese 
specimens of S. dehaani *, however, reveals certain definite, 
if not very striking, differences, and the Basra specimens are 
therefore recorded under a new specific name. 
* This species has recently attracted attention as one of the inter- 
mediate hosts of the lung-trematode, Paragonimus westermann?. 
