MORGAN HEBARD 359 



Redtenbacher's Pericentrus clearly includes several distinct 

 generic units. One of these includes the species multilobatus 

 Redtenbacher, genotype by monotypy of Shelford 's Trychopep- 

 hi.^, which species is a synonym oi Ceroys laci7iiatus Wostwood.^^ 

 To Trychopeplus probably also belongs spinoso-lohatus (Redten- 

 bacher). 



Wc are, in another paper, removing from Pericentrus, as 

 understood by Redtenbacher, the remaining American species, 

 restriclu.s of Redtenbacher, described from Porto Rico. 



This leaves in the genus Pericentrus Redtenbacher, five 

 Asiatic and Melanesian species, of which we select as genotype, 

 Pericentrus mowisi Redtenbacher, described and figured, from 

 Sikkim. 



The genus Trychopeplus may be distinguished from Peri- 

 centrus, as limited above, by the much longer tarsi, of which 

 the metatarsus is as long as, or longer, than the combined length 

 of the succeeding joints. The males are known for Trychopeplus 

 only and in this genus have fully developed organs of flight. 

 We are confident that comparison with material of Pericentrus 

 7udwisi would show a number of other, fully as imi)ortant, 

 features for generic separation from Trychopeplus laciniatus. 



Trychopeplus laciniatus (Westwood) (Plate XV, figures 5 a,nd 6.) 

 1S74. Ceroys laciniatus Westwood, Thesaur. Ent. Oxoniensis, p. 174, 



pi. XXXII, fig. 4. [[9], Nicaragua.] 

 1908. Pericentrus multilobatus Redtenbacher (in part), Monographic der 



Phasmiden, p. 352. [d^:^^ Chiriqui, [Panama]; [Rio Sucio], Costa Rica.] 

 1908. Pericentrus lacinicUus Shelford, Biol. Cent.-Anier., Orth., u, p. 356. 



[ 9 , Nicaragua: cT, Rio Sucio, Costa Rica; Chiriqui and Bugaba, Panama.] 

 1908. Trijchnpeplus multilobatus Shelford, Biol. Cent.-Amer., Orth., ii, 



pi. VI, fig. 5. (Male.) 



'^ Shelford ha.'g pointed out that the male of Redtenbacher's Pericentrus 

 multilobatus represents the opposite sex of Westwood's Ceroys laciniatus. 

 He has, however, attempted to retain the name multilobatus for the immature 

 female from Peru, described by Redtenbacher. This can not be done, as that 

 specimen was referred to multilobatus with a query and the type of multi- 

 lobatus must consequently be one of the described males. We here select as 

 type of Pericentrus multilobatus Redtenbacher, the male from Chiriqui, 

 Panama. As a result, that name falls as a synonym of Trychopeplus laci- 

 niatus (Westwood). 



3* The immature Peruvian female described by U.'dtent)acher, represents 

 a distinct si)ecies for which a name is, at the present time, not available. 



TUANS. AM. ENT. «UC., XLVIII. 



