1912.] NATURAL SCIENCES OF PHILADELPHIA. 189 



CC. Tegmina present in male, partly projecting beyond 

 pronotum. (Cephalic face of cephalic tibiae perforate.) 



Liphoplus Saussure. 

 (Genotype L. novarce.) 



GLAPHYROPUS- 1 new genus. 



1S74. Cydoptilum Saussure (not of Scudder, 1868), Miss. Sci. Mex., Rech. 



Zool., VI, p. 425. 

 1877. Cydoptilus Saussure (not Cydoptilum Scudder, 1868), Melang. 



Orth., II, p. 476. 

 1897. Cydoptylum Giglio-Tos (not Cydoptilum Scudder, 1868), Boll. Mus. 



Zool. Anat. Comp. Univ. Torino, XII, No. 301, p. 6. 



The very elongate caudal metatarsus which is very sparsely and 

 very delicately armed dorsad, will immediately separate this genus 

 from the other genera of the group. Under an ordinary hand lens 

 the metatarsus appears unarmed dorsad, and this is doubtless the 

 reason Saussure accentuated this character, thus differentiating it 

 from the allied genera, but under a moderate-power microscope the 

 margins are seen to be supplied with delicate cheetiform spines. 

 However, this spination is most subtle and is entirely different in 

 character from that found in any of the allied genera, which all have 

 these spines more decidedly dentiform, often contrastingly colored 

 and always truly serrate in their arrangement. The extremely 

 slender metatarsus is so striking a character that it will at once serve 

 to distinguish members of this genus. 



Genus monotypic. Genotype — Glaphyropus americanus [Cydop- 

 tilum americanum] (Saussure). 



Generic Description. — Head small, subelongate, smooth; inter- 

 antennal protuberance weak, broadly rounded, no vertical dividing 

 sulcus present; eyes pyriform, not inflated; maxillary palpi very 

 long and slender, the distal joint very obliquely truncate, labial palpi 

 short. Pronotum of male strongly produced cauclad covering the 

 base of the abdomen, caudal margin strongly arcuate; of female 

 subquadrate in form, cephalic margin truncate, caudal margin 

 weakly arcuate and covering mesonotum and base of metanotum. 

 Tegmina in male concealed by the pronotum, absent in female. 

 Ovipositor straight, slender, moderately long; distal valves lanceolate, 

 but not differentiated from the shaft. Supra-anal plate of male 

 strongly plicate, bicarinate, bimammilate at the base; of female 

 rotundato-trigonal, sulcate cephalo-caudad and folded between the 

 cerci. Subgenital plate trapeziform in male; rotundato-trigonal 



21 From ; 'Mujwpdc, smooth, and ~'» <;, foot; in allusion to the practically unarmed 

 dorsal margins of the caudal metatarsus. 



