C2 Di. W. T. Caiman on a 



largely pale ; stigma dark brown ; a brouJ brownish seam 

 alon<r vein Cu and narrower ones along the cord ; veins dark 

 brown, those of the costal region more yellowish ; strong 

 setae in the apical cells of the wing from /^o to Citi. Vena- 

 tion : potiolo of cell J/^ short ; vi-cu long. 



Abdomen rather long for the male sex of this genns of 

 flios (aljout 12 mm.). Basal abdominal segments dull 

 yellowish, segments 3 to 8 more brownish ; tergites with a 

 narrow, more or less distinct, dark brown sublaloral stri[)e ; 

 lateral margins of the segments pale. Hypo[)ygium yellowish, 

 the sclerites fused into a ring. Region of the ninth torgite 

 produced caudad into a broad depressed median lobe whose 

 jiosterior margin is gently cojicave 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 i'tw long 

 black setio. Iinier pleural appendage with a posterior fleshy 

 l)ule lobe whose proximal face is provided with long pale 

 setae, the anterior blade compressed. Ilegion of the ninth 

 sternite profoundly incised beneath on the niid-vontral line. 

 Eighth sternite unarmed, the dorsal margin wiih a row of 

 about eight black spinous seta;. Ovipositor with the tergal 

 valves acicular, the sternal valves shorter, compressed. 



Hub. South Africa. 



llolotype, cJ , Pretoria, Transvaal, December 5, liH8 

 [A. J. T. Janse). 



Allotopot)/pe, ? , January 4, 1919. 



Paratopotype, J, February 2, 1919. 



V. — A new Crab of the Genus Sesurma/ro/n Basra. 

 By \V. T. Calman, 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 Ca]i)t. 0. L. Boulenger, who 

 obtained them while on service in Mesopotamia. Other 

 specimens from the same locality, and cleai'ly of the same 

 species, have been in tho Jiluseuni for many years under the 

 name " Sesarvia dehaani, Milne-Edwards," given to them by 

 Mr. E. J. Miers. A compaiison with Japanese and Chinese 

 specimens of (S. c/e/um/i I *, iiowevor, reveals certain definite, 

 if not very striking, dilU'rence.--, and the Basra sjiccimens are 

 therefore recorded under a new sjtocilic name. 



♦ This species has recently attructed attention as one of tho inter- 

 mediate liustt uf the lung-tremutode, I'urat/ouifiius t('ettennuiit>'' . 



