250 Mr. R. I. Pocock on some 



young examples of a species of Spiroholus, which will probably 

 prove to be the same •A^avernHS. 



SpirostreptHs (inUivcri, Butler {ibid.), from llodriguoz, belongs to the 

 same group as all the Madagascar species. The segments are 

 strongly sulcate, being posteriorly nearly smooth above, but 

 decorated with an obscure anastomosing ])attern of low ridges ; 

 the anal valves are convex, witli their borders uncompressed. 



Spiroholus hecaU', Ikitler (ihid.), from Rodriguez, is a tSpirostrrptus, 

 allied to all the known Madagascar forms. The posterior part 

 of its somites is thicklj* punctulate and striolate, and the 

 margins of the anal valves are compressed. 



Part II. — Descriptions of some New Species. 

 Spirostreptus stenorhynchus, sp. n. (PI. XVI. figs. 1-1^.) 



Closely allied to S. Lunelii of Humbert, of wliicli hundy- 

 anus, Hunib., is probably tlie young. Both of these have been 

 well tigured and described, so that a brief diagnosis of this 

 new form will suffice. 



Colour jet-black, shining, and polished, tergites paler in 

 front ; lower half of head and autenuiu ferruginous, legs clear 

 yellow. 



Firat tergite with a fine anterior sulcus in front of the mar- 

 ginal sulcus ; the anterior angle very obtuse in the female, 

 rounded in male, and a little produced. In the anterior half of 

 the body the tergites are dorsally smooth or nearly so, but in 

 tlie posterior half they are distinctly ])unctuUite and striolate 

 dorsally ; the lateral stria do not in any of the segments unite 

 Avith the transverse strioke of the anterior half. The ventral 

 grooves are short, and the sterna are striolate. Anal somite 

 as in Lunelii. Legs with a series of hairs (about 4) on the 

 lower surface of each segment. 



Copulo.tory feet differing from those of S. Lunelii m that the 

 anterior lateral lamina bears three teeth, of which the inferior 

 is the longest and the up])er the shortest ; in tS'. Lunelii the 

 middle one is much longer than the interior, and the upper one 

 of S. stenorhynchus is absent ; the protrusible lamina is tlistally 

 bifid, the external ramus is short, curved, and sublaminate, 

 the internal very long, curled Uj)on itself, and H:igellitbrm. 



Loc. Ceylon {Cuming) ; Punduloya (Ceylon), coHected 

 and presented by Mr. E. E. Green. Also another example 

 without locality. 



Spiroholus erythroceplialus^ sp. n. (PI. XVI. figs. 2-2 h.) 

 Colour. Head, legs, and antennas blood-red; first tergite 

 almost entirely of the same colour, but with a large black 

 patch on each side above the lateral angle, the two j)atche3 

 connected across the middle line by an ill-defined shadowy 

 fuscous band, which is darker on the middle ; the second, 

 third, and fuurth tergites black at the sides, blood-red above, 



