ORIENTAL COLLEMBOLA. 89 



(fig. 1) large and hlatle-like, its surface partially sculptured with 

 KiiKiU tubercles similar to those found elsewhere ; at its apex is a 

 rounded curved tooth. 



Coloration. — In alcohol specimens dull brick-red above and 

 pale dirty cream-colour beiaeath ; the antennae somewhat darker 

 than the rest of the body and with a purplish suti'usion. The 

 legs and furcula whitish. 



Length 1-1-25 mm. 



Two specimens taken on the surface of water at Kurseong, 

 E. Himalayas, 5000 feet (iV. Annandale, July 4tli, 1908). 



No. ,\° Indian Museum Coll. 

 iti 



This species differs from Tullberg's original diagnosis of 



the genus in having the cuticle of the whole of the body and 



appendages, with the exception of the legs, tuberculated. 



Family E N x o M o B ii v i D .E D. T. 



Sub-fam. Isotomix.e Schaff". 



Genus IsoTOMA Bourlet. 



hotonta liourlet, Mem. sur les Podures, 1839, p. 23 {ad 

 jKirtent). 



IsoTOMA SIVA, sp. n. (PI. VI. figs. 1(5-18 ; PI. VII. fig. 19.) 



Setosa. Segtnenttun qaartuhi ahdoiiiinis triplo longius quani 

 terthmi. Ante niuf capite diiplo long lores ; articidas qaartus tertio 

 fere duplo long [or. Ocelli 12: 'o in utroqae latere capitis. Orgunum 

 postantennale nullnin. Uentes mucronani tres, anus post alteram 

 inserti. Long. 1-25-1 "5 mm. 



llead. — Slightly longer than broad, ns long as the thorax 

 (fig. 19). '\A\<d eyes six in number on each side (fig. 18); post- 

 antennal organs wanting. 



Antenncp. — In average length measuring "5 mm. ; the joints 

 related to one another proportionately in length as 5 : 8 ; 8 : 14. 



Trunk. — The segments related to one another in length a.s 

 9:8:5:7:7: 20 :5:1 (fig. 19). Invested with plumose 

 hairs. 



Legs. — ISub-equal, clothed with jilumose hairs; the claws to 

 each of the pairs similar. T\\q superior claw elongate and greatly 

 acuminate, with two extremely minute teeth near the apex, and 

 a third tooth near the base. The inferior claw unarmed. A 

 single very long tenent hair in relation with each foot (fig. 16). 



Furcula. — Approximately equal m length to the antennae ; 

 clothed with plumose hairs. The dentes one half longer than the 

 vianu./irium. The inucrones .small, ti'identate ; provided with a 

 prominent, upwardly directed teiminal tooth, and immediately 

 in front of it is a second tooth pointing obliquely forwards, and 

 inclose relation with the latter is a backwaidly directed spiniforiu 

 tooth (fig. 17). 



