24f) SERIES TI. CI.AVK'ORxNTIA. 



•S-. Last .loint of tarsi, long, claws lar.i;e ; head retractile, the month pro- 

 tected l>y till' iu'dstci'imiii ; a(iuatie or suba<iuatic s|)ecies. 



Fuuiily XXXIII. I'ahmd.e. p. (JTO. 

 *-s. Last .joint of tarsi moderate, claws normal; thorax (in onr species) 

 with deep grooves; mouth parts covered by a large meutum. 



Family XX. Riiyssodid.-e, p. ,")r).S. 



Snbscrics (". T F/IHA M l< i; A (l.A VK'OUNJA. 



Ill tliis iiroiip ( with the ('.\c('|)1 ion incntioiicd in key to sulisci'ics) . 

 the tarsi arc four-jointed. The species live, for the most part, in 

 funo'i, especially those lirowina; on dead trees and log's; some are 

 snl)a(|u;i1ic. living' in nmd or snnd along flu' margin of water. 



KEY TO FAMILIES OF TETRAMEKA CLAVICORMA. 



'/. Ventral segments all frei' and movable. 



h. Wings fringed with hairs; very small, less than 1' mm. 



V. Hind coxa? contiguous, with ]ilates covering tlu' thighs; antennse 

 nine-jointed, club two-jointed. 



Tribe (VIII). Chiwhini, p. 2'.)1. 



<c. Ilind cox;e separate, without plates; tarsi apparently three-jointed. 



the basal joint concealed by I lie ii itched second joint; mandibles 



with comb-like teeth. Family W. Couvi.oprnn.E. ]>. r>01. 



hh. Wings not fringed with haii's. 



d. Front coxa' transverse; body contractile; length less tiiaii 12 mm. 



Tribe (XXVI). (Uihaccplidlnti, ji. »;4T. 

 (hi. Front coxjie not transverse. 

 (\ Front coxjB globose. 



/'. Tarsi slend«'r ; length less than 4 mm. 



Subfamily (X\ll). M iiccldiiKr. |». .">:!4. 



/■/■. Tarsi more or less dilated and spongy beneath, the fourth joint 



united with the fifth, so that only four are visible; antenn:e 



strongly clubbed. F.amiJy X\TII. Fiiorvi.in.K, ji. .")::".(. 



cc. Front coxre oval. 



(J. Front coxa^ well separated by the horn-like iirostenumi. 

 //. Form oval, depressed; head free; surface finely and densely 

 punctured and hairy; length less than G mm. 



Family XXIII. Mvcetopiiaoidt:. ]i. ~>-<2. 



till. L'orm cylindrical; thorax prolonged over the head; length 



l(>ss tiian .■>..") mm. F.amily (XLVII). ('ioulf:. ]i. sil.".. 



////. Front coxai almost contiguous; ]irosternum semimembranous; 



form small, rounded, convex; habits subaquatic; length less 



than 1 mm. Family XXXII. Georyssid.e, p. e)T."». 



an. Ventral segments 14 lirmly united, the fifth only being movable. 



i. Antennse of n'gular form; tibi;r not dilated, not fitted for digging; 

 front and middle coxa' sm.all. globose; length less than G mm. 



Family XIX. Colydiid/E, ]•>. 7)V.\. 

 ii. AntenuiT' short, the outer seven joints broad and Short; tibire dilat(^d. 

 armed with I'ows (tf spines ;ind fitted for digging; labrum and 

 m.'iiidiblcs lirojccting forw;ii-(l : length less than 7 mm. 



F.imily .\.\XI\'. IIeterockrid.k, p. (!S2. 



