12 PROCEEDINGS OF THE ACADEMY OF 



Prebasilar fold connate with basilar segment, the suture however well marked, 

 existing as a deep groove. First segment of the body very much the smallest. 

 Antennae generally yellowish, in some specimens chestnut. Scuta generally 

 much widened posteriorly, their lateral margins arcuate and furnished with an 

 elevated crest. Posterior margin of terminal scuta very strongly arcuate, the 

 lateral borders, however, almost straight. Suture between scuta and episcuta 

 traceable in most of the segments. Distal extremities of femora of all the an- 

 terior legs armed, each, with a tubercle bearing from two to four small spines 

 of tibiae with a single minute spine of metatarsae, with a longer but very slen- 

 der one; claw large, furnished with two spines at its base. Femoral joints of 

 last pair of legs longer than tibial, somewhat flattened above, each armed on 

 superior surface with six spines, forming two triangles on internal margin and 

 surface with from ten ro twelve, on inferior surface with from four to six. 



Hab. Unknown. 



S. limicolor, nobis. 



S. dilute castanea, antennis 18 articulatis; dente mandibulari amplo, gracile ; 

 dentibus labialibus 10, intimis utrinque quatuor valde coadunatis, extimo 

 sejuncto, acuto ; pedibus postremis gracilibus, basali articulo utrinque bispinoso, 

 processu angulari bifido ; appendicibus analibus lateralibus punctatis, spina 

 terminali simplice. Long. unc. 4-5. 



Prebasilar fold absent : basilar segment large. Color of belly and feet very 

 similar to that of the back, perhaps a little lighter. Preanal scale much nar- 

 rowed posteriorly, short. Sutures between scuta and episcuta, and between 

 sternum and episternum, well marked. 



Hab. Bengal. 



S. gracilipes, nobis. 



S. brunnea, segmento cephalico parvo, prebasali nullo, basali maximo ; au- 

 tennis 20 articulatis; dente mandibulari et tuberculo basali magnis, dentibus 

 labialibus 8, parvis, multo coadunatis ; pedibus postremis gracilibus, articulo 

 basali 7 spinulis in serie duplici dispositis ; appendicibus analibus lateralibus 

 elongatis, punctatis, singula 3 spinulis armata; squama preanali postice emar- 

 ginata. Long. unc. 3. 



Color brown, with a lighter narrow stripe along centre of dorsum. Posterior 

 margin of sternal plates rounded. Terminal angular process of last pair of legs 

 scarcely developed. Our specimen is probably a young animal. 



Hab. Singapore. Presented by Sandwith Drinker. 



S. d i n odo n , nobis. 



S. saturate brunnea, segmento cephalico magno, prebasali nullo, basali magno ; 

 antennis 18 articulatis, pubescentibus ; dente mandibulari maximo, dentibus la- 

 bialibus 12, parvis, nigris ; pedibus postremis, singula articulo basali intus spinis 

 magnis 3-4, subtus 2, armato ; processu angulari elongato, obscure tri6do ; ap- 

 pendicibus analibus lateralibus punctatis, spinis apicalibus utrinque 3, parvis. 

 Long. unc. 5. 



Last pair of legs, as well as mandibles, inclining to rufous; femoral joint a 

 little longer than tibial, flattened above ; terminal angular process terminating 

 in a large spine with two very small ones at the base. Sterna marked on pos- 

 terior border with three light colored dots, the middle one being generally 

 much the most conspicuous. Preanal scale somewhat elongate, impressed 

 with an obsolescent longitudinal sulcus. 



Hab. Singapore. Presented by Sandwith Drinker. 



S. cephalica, nobis. 



S. dilute castanea, robusta, capite amplissimo ; dente mandibulari magno, 

 dentibus labialibus 10, nigris, tuberculis similibus, vix coadunatis ; antennis 10 

 articulatis; segmentis alternis minoribus ; pedum postremum basali articulo 



[Jan. 



