Rev. W. Kirby's Character's of Otiocerus and Anotia. 21 



former, by wanting the appendages at the base of the antenna* ; 

 by the comparative shortness of its promuscis; by its very \>k- 

 minent semilunar eyes ; by the greater length of its nasus ; by 

 the difference observable in the veining of its elytra ; and tin- 

 angular tooth at their anterior base : — and from the latter, by its 

 compressed, bicarinate, subrostrated head ; by the comparative 

 length of the joints of its antennae, the first joint in Delpkax 

 being very long* ; by the absence of the remarkable spur which 

 arms the posterior tibiae of the latter genus ; by its differently- 

 shaped and veined elytra ; by the absence of ocelli ; and by its 

 anal appendages, which in Dclphax come nearer to those of 

 Cicada Latr.t I possess only a single individual of this genus, 

 which is a female, with an anal apparatus similar to that of Otio- 

 cerus. 



Bonnetii. 1. A. 



Tab. I. Fig. 15. 



Long. corp. lin. \\. 



Expans. alar. lin. 5J. 

 Corpus pallidum. Caput triangulare : linea aurantiaca ab ocu- 

 lis ad rostri apicem ducta. Oculi pallidi. Atitenna capite 

 longiores. JLlytra lutescentia : maculis hyalinis; neura ob« 

 liqua in disco apici propiori, nigra ; costa apicem versus san- 

 guineo transverse lineatula. In apice ipso puncta quatuor 

 nigricantia notanda. Ala subhyalinae : neura disci transversa 

 anteriori nigricanti. 



In my specimen of this insect the head is in the vertical posi- 

 tion represented in the sketch J; but this is most likely the di- 

 rection the animal gives it, when it prepares to use its promuscis : 

 w "hen at rest and unemployed, the head probably assumes a ho- 

 rizontal direction. 



* Tab. I. fig. n.a. f Ibid. fig. 13. % Ibid. fig. 9. 



These 



