ACCOUNT OF THE PHASMIDAE, WITH NOTES ON THE EGGS. 



81 



of the two egg-membranes and subsequently becomes perfectly adherent to the latter 

 so that in the completed egg the two cannot be separated. 



4. All the details of structure of the egg are completed in the chamber where 

 the formation commenced. 



I have arranged the genera in the order adopted by Brunner in his valuable 

 " Revision du systeme des Orthopteres '." 



ORTHOPTERA. 



Family. Phasmidae. 

 Tribe. Lonchodides. 

 Genus. Myronides. 



Myronides. Stal, Recensio Orthopterorum, ill. Stockholm, 1875, p. 8. 



This genus was established by Stal for two species from the Moluccas, and 

 very little has since been added to it. In New Britain however the genus appears 

 to be represented by numerous species. The chief character to distinguish it from 

 Lonchodes is the longer median segment. Stal has not given any particulars as to 

 the sexual distinctions, but I anticipate that the males and females are very 

 different, so that direct observation will be required to match them. M. binodis is 

 a very interesting form, as the peculiar nodes at the apex of the metanotum evidently 

 represent wings in a rudimentary or vestigial condition (PI. VII, Fig. 2). 



SECT. I. Very Slender Insects [male only known]. 

 (1) Myronides filum, n. sp. PI. VII, Fig. 1. 



<£. Peraugustus, olivaceo-testaceus, antennis fuscis, mox ante apicem albidis ; capite 

 anterius tuberculis duobus distantibus, acuminatis armato, posterius subquadrituber- 

 culato ; metanoto posterius utrinque vix gibboso, processu minuto instructo. 



Operculo subgenitali abdominis haud convexo, apice rotundato medio leviter 

 emarginato ; lamina subanali profunde canaliculato, cercis liberis, sat elongatis ; lamina 

 supra-anali profunde emarginata ; processu apicali interne tuberculis acutis circiter 

 16 — 24 instructo. 



Long. corp. 76 mm. ; antenn. 53 mm. ; cap. post antenn. 3 mm. ; pronoti 3 mm. ; 

 mesonoti 19 mm. ; metanoti 6 mm. ; segm. med. 4£ mm. ; abdominis 39 mm. ; femor. 

 ant. 24 mm. 



Var. fusco-nigricans. 



Loc. New Britain. 



There are no tuberosities or asperities on the surface of the body, and the two 

 teeth at the apex of each femur are very minute. The first joint of the antenna 

 is straight-sided and rather narrow. 



W. 



Ann. Mus. Genovn, xxni. 1892 — 3. 



12 



