No. 416.) MORTH-AMERICAN INVERTEBRATES. 677 
Moderately spinose, rather granulate, no impressed line, moderate 
ee. 8 ; . . 5. . L. ventricosum Wood (E. States) 
HapRnoBUNUS Banks : 
Dorsum finely iE ; ek Bor in female not much marked with 
brown at tips of join : H. grande Say (E. States) 
Dorsum more einig wid: many itid round, pale spots; legs 
shorter, more marked with brown 
H. maculosum Wood (S. States) 
MESOSOMA Weed. . . . . . . MM. niger Say (S. States, Neb., Dak.) 
The Nemastomatida include three genera, which can be separated as 
below : 
PHandibles longer than the body, be Sia forward 
(Ischyropsalinz) Taracus 
Mandibles shorter than body, direcind downward . (Nemastomina) 2 
Fic. 6. — Dendrol. "abili 
2. Fourth joint of palpus much thickened . . . . . . Phlegmacera 
Fourth joint of palpus scarcely thickened. . . . . . Nemastoma 
hee eam Packard : 
- Several false articulations in femora III and IV, eye-tubercle very 
Bind . cordiam E gra Bks.! (Alaska 
No false arcatons 1 in Telnet . 
2. A pair of. ee erect spines on de anterior jäk of ‘the 
Sidon : . P. occidentalis Bks. (Wash.) 
No ih a spines . d ru p P. avian Pack? (Ky., N. Y., N. H) 
1 Includes Zvmicomerus bispinosus Pavesi. 
2 Includes Sabacon spinosus Weed. 
