ICHNEUMONID GKNERA LABIUM AXD rCECILOCRYrXUS. 3 



bear a strong superficial resemblance to species of this genus. 

 T. abdominalis Guer. and Eirone celsissima Turn., both of which 

 look like Lahiuni, occur on Mt. Wellington at a considerable ele- 

 vation, where Labium montivagimi is very plentiful. E. celsissima 

 even has the apical antennal joints yellow, a most abnormal 

 coloration for one of the Thynnidfe. 



Key to the Species 0/ Labium. 



1. Autennse not move than 30-joiiited 2. 



Aiitennse more than 30-.ioiuted 4. 



2. Second recurrent iiervure only feebly' bent in the 



middle; nervellus straif?ht, discoidella want- 

 ing ; head, thorax, and median segment black 



with yellow markings Ti. walkeri, 9\\. n., c? , p. 4. 



Second recurrent nervure sharply angulate in 

 the middle, nervellus angulate, discouiella not 

 wholly wanting ; head, thorax, and median 

 segment fulvo-ferruginous, with yellow mark- 

 ings 3. 



3. Discoidella reduced to a short slump, originating 



halfway between the submediella and the 

 middle of the nervellus ; median segment 



yellow apically L. cent rale, sp. n., p. 6. 



Discoidella complete, originating much nearer to 

 the middle of the nervellus than to the sub- 

 mediella; median segment entirely fulvo-fer- 

 ruginous L. brevicorne, sp. n., p. 6. 



4. Face and clypeus fused, in the same plane, the 



dividing-line obsolete ; more or less pilose 5. 



Face and clypeus not entirely fused or in the 



same plane; scarcely pilose 6. 



6. Strongly pilose ; hind femora and median seg- 

 ment black L. pilosum, sp. n., p. 10. 



Feebly pilose ; hind femora and median segment 



fulvo-ferruginous L. suhpiJosuJiim, sp. n., p. 11. 



6. Hind empodia small, not more than one-third of 



the length of the tarsal ungues ; mesonotum 



with a broad black fascia on each side L. hiuittatuiii, sp. n., p. 8. 



Hind empodia elongate, at least two-thirds of the 

 length of the tarsal ungues ; mesonotum with- 

 out black lateral fasciw 7. 



7. Mesonotum opaque, closely and coarsely punc- 



tured ; dentiparal area produced into a broad 



well-developed tooth 8. 



Mesonotum shining, smooth or finely punctured; 

 dentiparal area unarmed, or at most with an 

 inconspicuous tooth 9. 



8. Scutellum and postscutellum yellow L. petitorium Erichs., p. 7. 



Scutellum and postscutellam ferruginous L. petitorium, subsp. con- 



9. Flagellum of the antennee wholly black above, \yolor, subsp. u., ]). 8 



without pale apical joints 10. 



Flagellum, it black above, then always with 

 several of the apical joints conspicuously fer- 

 ruginous or ochraceous 11. 



10. Mandibles very long and straight, vertical ; 



dentiparal area with a small, but distinct 



tooth at the external apical angle L. uasseamim, s\>.\\., (?,p. 13 



Mandibles normal, not elongate ; dentiparal area 



unarmed h-firruc/ineiun Cam., p. 19. 



11. External area of the median segment more 



coarsely sculptured than the dentiparal area ; 

 external subopaque, finely and closely punc- 

 tured, dentiparal smooth and shining 12. 



1* 



