222 PROCEEDINGS OF THE ACADEMY OF [June, 



in Glaphyropus and Oligacanthopus this may be said to be absent, 

 under a powerful microscope traces of such a suture may be found. 

 Liphoplus and Arachnocephalus are said to have the protuberance so 

 distinctly sulcate that, when viewed from above, the interantennal 

 protuberance can be seen to be divided by a sulcus which separates 

 this part into two distinct lobes. In all of the other known genera a 

 distinct but more or less subobsolete sulcus exists. The variation in 

 individual opinion in considering this type sulcate or non-sulcate has 

 led to much confusion. 

 Specimens Examined. — 1 9 . 



Miami, Fla.; Feb. 6, 1904; (H.); 1 9. (Type) [Hebard Col- 

 lection.] 



HOPLOSPHYRUM 47 new genus. 



1868. Mogoplistes Scudder (not of Serville, 1839), Proc. Bost. Soc. Nat. 



Hist., XII, p. 142. 

 1874. Mogoplistes Saussure, Miss. Sri. Mex., Rech. Zool., VI, p. 423 (in part). 

 1877. Mogisoplistus Saussure, Melang. Orth., II, p. 463 (in part). 

 1897. Ectatoderus Saussure (not of Guerin, 1849), Biol. Cent.-Amer., Orth., 



I, p. 230. . 



1902. Ectatoderus Scudder (not of Guerin, 1849), Proc. Davenp. Acad. Sci., 



IX, p. 58. 



Genus includes three species. Genotype — Hoplosphyrum occi- 

 dentale [Mogoplistes occidentalis] (Scudder). 



.The genus Hoplosphyrum is erected to include forms which are 

 closer to Ornebius Guerin than to any other genus, but from which, 

 individuals of this genus can be readily separated by the elongate 

 median spur of the caudal tibiae and the very peculiar non-dilated 

 apex of the ovipositor. The form of the pronotum and the apparent 

 tegmina of the males show that they are not at all related to true 

 Ectatoderus, while the presence of well-developed tegmina in the 

 male, the ovipositor structure in the female, and the spur propor- 

 tions are readily appreciable characters to differentiate the new 

 genus from Mogoplistes. 



Generic Description. — Form hardly depressed, compact, surface 

 clothed with scales; pronotum little produced caudad in male, in 

 general subquadrate dorsad ; tegmina absent in female, well-developed 

 and projecting caudad of pronotum in male. 



Head little produced cephalad; interantennal protuberance with 

 slightest trace of vertical division. Pronotum of male subdepressed, 



7 From '''../mi •, arm or weapon, and cyvpov, ankle; in allusion to the long spurs 

 on the distal extremities of the caudal tibiae. 



