744 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



margin* with a carina on each side, but no spines; apical 

 abdominal segment pointed; claws cleft, with an acute 

 basal tooth; mid metatarsi narrower than tibiae, more or 

 less colored; fore and mid femora and tibiae black, or 

 nearly so; fore trochanters and coxae black; boat-shaped 



scale somewhat pointed 3 



• Fore coxae without bristles in front; front metatarsi with- 

 out a boat-shaped scale; apical margin of sixth abdominal 

 segment with two teeth on each side; claws without dis- 

 tinct basal teeth; mandibular tooth basal; cheeks beneath 

 with a large scale-like process; front coxae bare ante- 

 riorly, with large apical spines; front tarsi strongly 

 fringed, first joint hollowed out beneath; mid femora enor- 

 mous; sixth abdominal segment with a strong, deeply 

 notched carina; apical margin with strong median teeth; 

 apical segment outwardly arcuate, sometimes slightly 

 dentate 4 



3. Tarsal scale with the tip virtually on a level with the tip of 



third tarsal joint, edged with a short line of black pubes- 

 cence; two or three coxal bristles present pugnata 



Tarsal scale with the tip about on a level with the tip of 

 second tarsal joint, edged with fuscous pubescence; four 

 to five coxal bristles present sayi 



4. Apex of abdomen not stylate beneath 5 



Apex of abdomen stylate beneath, with three processes, 



apical dorsal abdominal segment semicircularly emar- 

 ginate; pubescence as in female .melanophea 



5. Dorsum of body with black pubescence confined to third, 



fourth, and fifth abdominal segments vidua 



Dorsum of body without black pubescence latimana 



6. Coxal spines strongly developed; sixth abdominal segment 



with carina transverse, strongly notched or denticulated; 

 mandibles tridentate; spines on apical margin of sixth ab- 

 dominal segment short and more or less concealed 7 



Coxal spines wanting; mandibles tridentate; carina on sixth 

 abdominal segment semicircular, entire or nearly so, its 

 edge at most slightly denticulated; apical margin with two 

 lateral teeth; seventh abdominal segment pointed; pubes- 

 cence mostly pale ochraceous except on dorsum of body, 

 where there is much black pubescence infragilis 



7. Pubescence mixed with black on dorsum; carina of sixth 



dorsal abdominal segment convex laterally; lateral ocellus 

 not nearer edge of vertex than to nearest eye; carina of 

 sixth dorsal abdominal segment with its margin jagged; 



•This is beneath and anterior to what is superficially the apical margin of the jagged 

 or emarginate crest of the sixth dorsal abdominal segment. 



