MORGAN HEBARD 1 55 



Genotype by monotypy: Pseiidomops oblongata [Bl[atta] oblon- 

 gata] ( Linnaeus). -^- 



Generic Characters. — Eyes sho^ving a tendency to bulge latero- 

 dorsad. Ocellar areas and ocellar spots weakly defined. An- 

 tennae, in proximal half, hirsute to plumose. Pronotum con- 

 siderably obtuse-angulate produced caudad, with apex rounded. 

 Tegmina narrow, with point of least width mesad ; discoidal sectors 

 longitudinal, these formed by the median vein and one ramus, which 

 is angled opposite apex of anal field and rami of ulnar vein which 

 spring at an angle from that vein near the apex of the anal field, "^ 

 (the veins which spring from this region numbering three to six). 

 Wings narrow, hyaline, with glassy, iridescent luster; costal veins 

 heavily clubbed distad, this area strongly suffused; intercalated 

 triangle small. Dorsal surface of male abdomen and styles 

 strongly specialized. Limbs elongate and slender; vcntro-ceph- 

 alic margin of cephalic femora armed with few hea\">', elongate 

 spines proximad, followed by one or two shorter spines, succeeded 

 by a row of more closely set, stout, shorter spines, which is ter- 

 minated distad in three elongate spines in increasing ratio; ventro- 



"'"- Serville refers to the Linnaean species in his generic description, and whether or 

 not the insect before him was correctly determined, has no effect upon the fact that 

 oblongata of Linnaeus is the genotype of Pseiidomops. Kirby has, in error, given inter- 

 cepla of Burmeister as the type of the genus, placing oblongata as understood by Serville 

 in the synonymy under that species (Syn. Cat. Orth., i, p. 75, (1904)). This action 

 is unwarranted and erroneous; because Serville gives first a reference to Linnaeus in 

 his description of the genus, and also gives the locality Surinam, while Kirby himself 

 assigns to intercepta only Central American localities. Shelford (see papers — Trans. Ent. 

 Soc. London, 1906, p. 252, (1906) and Trans. Ent. Soc. London, 1907, p. 458 (1908)), has 

 supported Kirby in the view that oblongata of Linnaeus and of Serville represent distinct 

 forms, that of the latter author being the same as Burmeister's intercepta. We do not 

 agree with this conclusion and believe that oblongata of Linnaeus and Serville, both 

 described from material from Surinam, represent probably the same species — certainly 

 both are distinct from the Central .American intercepta of Burmeister. 



"3 The ulnar vein, at the apex of the anal field, reaches a small area where all the veins 

 are subobsolete; from this area spring, at an angle to the ulnar vein, \'eins which have 

 been termed its rami. It would appear to us, however, that, though the first one or two 

 of these veins constitute continuations of the ulnar \ein, the remaining veins, toward the 

 sutural margin, are rather continuatitjns of the axillary veins, which have been broken 

 for a i)rief distance at the apex of the anal field by the anal sulcus. (See Pi. VI, fig. 5.) 



These veins radiate slightly distad, due to the greater width there of the surface which 

 they occupy; the vein adjacent to the sutural margin, however, parallels it for its entire 

 length. 



MEM. .\M. ENT. SOC, 2. 



