64 HYMENOPTEKA. 



Kirby (List of Hymen, i. p. 90) doubts if Norton had described a male, as he says 

 he did ; but Norton is quite correct in this, and, judging by Kirby's figure of the so- 

 called female, I should say it is a male. What Kirby (I. c.) describes and figures 

 (t. 6. fig. 13) as the male of P. compta is a Lophyroides allied to L. ruficollis. 



3. Perreyia Championi. (Tab. IV. fig. 6, maxillary palpus.) 



Nigra, ore testaceo, abdomine flavo-rufo ; alis fusco-violaceis, eellula cubitali tertia paullo breviore quam 



secunda. 

 $ . Long. 7-8 millim. 



Hab. Guatemala, Purula (Champion). 



The antennae are stout, very slightly tapering towards the apex ; the joints slightly 

 produced at the apex, the third one half longer than the fourth ; at the sides the 

 joints are piceous. The vertex is raised, bounded on the sides by the vertical furrows, 

 and immediately above the antennae by a transverse furrow ; a short but wide furrow 

 issues from near the lower ocellus. The space between the antennae, labrum, clypeus, 

 and mandibles is testaceous. The second cubital cellule is longer than the first and 

 third ; the third itself is longer than the first ; the second recurrent nervure is received 

 a little behind the second transverse cubital and in the third cubital cellule. 



DECAMERIA. 



Decameria, St.-Eargeau, Enc. Meth. x. p. 371 (1825). 

 Dictynna, Brulle, Hymen, iv. p. 662; Norton, non Westwood. 

 Camptobriurn, Spinola, Ann. Soc. Ent. Fr. ix. p. 134. 

 Acherdocerus, Kirby, List of Hymen, i. p. 92. 



I am not quite sure as to Camptobriurn being identical with Decameria or congeneric 

 with any of the insects I have described here. They agree closely with Spinola's 

 description and figure, save that he says the palpi are long, filiform, and 4-6-jointed, 

 which is certainly not the case with any of the insects of this group known to me. 

 My impression is that Spinola has made a mistake in his description of the palpi, but 

 that can only be verified by an examination of his type specimen. Under these cir- 

 cumstances I have not adopted Spinola's name. It is necessary to explain that the 

 typical Decameria has only ten joints in the antennae ; but I have not, on this account, 

 separated it from the species with eleven joints (that being the number with Campto- 

 briurn), because I do not regard, in this case, the number of joints of generic value, 

 as the difference in the number of joints is not accompanied by other differences. 



l. Decameria nigriceps. 



Camptobriurn (?) nigriceps, Kirby, List of Hymen, i. p. 92, t. 6. f. 18 \ 

 Hab. Mexico, Orizaba 1 . 



