130 L^'ovember, 



of which is JiortHlatiiis, Mey., for the wing-cell has no hook, the 

 character of the division in which Tmicephalus occurs. * * I 

 should have called it a Litosoma, but if it is to enter that genus, its 

 name will have to be changed, as an obsoletus already exists therein." 

 Last summer I took a great many specimens of T. obsoletus, in Scotland, 

 but, on examining them, I found that they all have a hook in the wing- 

 cell, and that, therefore, they could not be referred to OrthoU/lus. In 

 communicating this to Mr. Saunders, I obtained an answer : " I was 

 just going to write to you about this when I got your letter. I have 

 specimens with and without the hamus, clearly identical otherwise, 

 so that I conclude that the hamus is not a distinctive character. Those 

 I have without the hamus are all ^ , but I have (J with it ; does not 

 the var. with the hamus = your Macrocoleus Reiheri, Avhich I have 

 from Dr. Puton ? " Mr. Saunders had also the goodness to send me 

 a specimen of " the ^ without the hamus," and having carefully ex- 

 amined "the ^ with the hamus," and "the (^ without the same," I 

 have found that the former is the species described by Fieber as 

 Tmicephalus obsoletus (which, however, could not be referred to the 

 genus TinicepJialus !); it is the same that I have re-named Macro- 

 coleus Beiberi (Pet. Nouv. Entom., i, No. 135, p. 540), having before 

 made a mistake in determining it as a Ti^iicfphalus. "The ^ without 

 hamus " differs, however, in some other respects fi-om the typical 

 Tinicephalus obsoletus, which it at all events is extremely like. I give 

 the following characters : — 



"(J with hamus." " (? without hamus." 



{Tinicephalus obsoletus) : {Orthotylus Saundersi) : 



Second joint of antennae distinctly Second joint of antennae not longer 



longer than the width of the posterior or scarcely longer than the width of the 



margin of pronotum ; third joint dis- posterior margin of pronotum ; third 



tinctly longer than the width of the joint not longer than the width of the 



head ; fourth joint not half as long as head ; fourth joint half as long as the 



the third. third. 



I think, therefore, that the two are distinct, and I still believe 

 that the hamus among the Capsi is a very distinctive character of 

 generic value. The xyphus in Tinicephalus obsoletus is convex, in 

 Orthotylus 8aundersi even, as also it is in O. adenocarpi, although not 

 finely marginated, as in this latter. 0. Saundersi differs much from 

 all the other allied species of this genus in the colour and the marking 

 of the membrane, being similar to Tinicephalus obsoletus. Perhaps, 

 however, it is necessary to compare a greater number of specimens to 



