442 Materials for a Monogrnph 



UDEOPSYLLA, Nov. gen. (ov6a^, -^vVm). 



This genus is to be placed between Cevthophilus and 

 Daihinia. The body is heavier and stouter than in Ceu- 

 thophilus, with a larger head; the form of the body is 

 that of Ceiithophilus ; antennae as in Daihinia; first joint 

 larger and stouter than the rest, as broad as long, com- 

 pressed anteriorly ; third joint twice as long as second ; 

 remainder unequal ; eyes small, subpyriform, docked on 

 the antennal border, globose; maxillary palpi rather long- 

 first and second joints equal and small ; third, more than 

 equal to the preceding together ; fourth, little more than 

 half as long as third ; fifth, a little longer than third, some- 

 what curved, split along the whole under side ; as in Ceu- 

 thophilus the pro- meso- and metanota nearly conceal the 

 epimera of the thoracic segments; coxae dilFering but 

 slightly from CeuthopJiilus ; hind femora very heavy, 

 thick, and especially broad, but not so much so as in Dai- 

 hinia, where, as in this genus, the whole limb is swollen, 

 and not the basal portion only, as in the preceding genera ; 

 in the males the hind femora are spined beneath; the fore 

 and middle femora are shorter and heavier here and in 

 Daihinia than in Ceuthophilus ; tarsi, with the first and 

 fourth joints equal and longest ; second and third equal and 

 small, the second overlapping the third abovj ; 

 '^— ^^^^^^^~-^ the ovipositor is rather short, thick at base, slen- 



Fig. 2. der at apical half, terminating much as in Ceu- 

 thophilus. 



This genus differs from Daihinia m the longer, more 

 slender, less robust, and less spinous legs, in the some- 

 what more slender body and smaller head, in the siiorter 

 maxillary palpi, and in the structure of the tarsal joints. 

 See figs. 2, 3. 



1. U. ROBUSTA. 



Phalang-opsis (Daihinia) robustns, Hald., Proc. Am. Ass. 

 Adv. Sc. ; II. 346. (1850.) 



