Stylopulce. 9 



Furthermore, a very delicate, straight, continuous ner- 

 vure, intervenes in all cases about midway between the 

 externo- and iuterno-medial, corresponding with the suh- 

 externo-meclial of the same writers [ihid. p. 375). 



In some cases, the faint trace of a spurious supplemen- 

 tary nervure (neura spuria, ibid. p. 376) would seem to 

 exist between the subinterno- and intern o-medial ner- 

 vures, which, not being constant, even in the same species, 

 can only be regarded as abnormal. 



Thus, all the elements of the metathoracical wing de- 

 fined as the normal type in Coleoptera, are distinctly 

 portrayed ; coupled also with the "striking circumstance" 

 already adverted to, that "fetv or no closed areolets " are 

 to be found therein. 



These results, with the principal nervures brought pro- 

 minently forward, may be tabulated as follows : — 



Neurarum Alee Synopsis. 

 . ') a. Neura costalis, K. 



,.i„i^„ I' C ^' N^^^^'*' mediastina, K. 



Costalis, K. 





Area 

 aualis, K, 



Neitra postcostalis, K, 



d. Neura la insulata (apicalis). 



e. Neura 2a insulata (discoidalis). 

 Neura exteruo-media, K. 



g. Neura subexterno-media, K. 

 Neura interno-media, K. 

 Neura subiuterno-media, A'. 

 Neura analis, K. 



I. Margo analis. 



The structure of the antennse, which vary in the 

 terminal joints, exhibits a certain uniformity of organi- 

 zation in the three basal joints ; the stipes consisting in 

 all cases of t^vo short joints (g) ; the third being invari- 

 ably produced into a divergent exartieulate branch; and 

 the fourth emanating from the base of the latter. 



(g) Kirby, in bis general characters, defines the antennae as "basi 

 stipite communi crasso bi-vel triarticulato " (Linn. Trans., I. c, p. 109) ; 

 and in Xenos (p. 114). he describes them as " stipit.e triarticulato." So 

 also in the description of his Tab. IX. fig. 10, b, " the triarticulate stipes 

 of the antennae" (p. 121) in Xenos Pechii is indicated ; the third joint, as 

 .represented in the plate, being in reality the hasal cup of the first exarti- 

 eulate branch. Siebold also in his X. sphecidarum (N. Schrift. d. Nat. 

 Gesch. 1839, p. 79) defines the stipes as triarticulate, the third joint 

 being the shortest. (For position of exartieulate branch, vide post, p. 21.) 



