ANATOMY OF MARELLIA REMIPES — CARBONELL 95 



sheathlike hard covering of the terminal portion of the dorsal lobe. 

 These lateral halves of the sheath appear to be formed by, or at least 

 connected to, the lateral plates of the proximal part (m, m') (to which 

 they are connected by sclerotized bridges shown in fig. 20 D), and to 

 the posterior lateral sclerites of the phallotreme cleft (see below), 

 which join the sheath at its upper apical part. The distal part of the 

 dorsal lobe is, as usual, cleft by the phallotreme (C, Phtr). 



The lateral sclerotized plates {m, m') of the proximal part of the 

 dorsal lobe of the aedagus (rami of cingulum) are prolonged an- 

 teriorly by a pair of internal, rather weak parallel apodemes (C, D, 

 A pa). The bases of the apodemes are united by a curved bridgelike 

 zygoma {z) from which arises the membrane forming the basal fold 

 {Bf). 



The endophallus of Marellia remipes (E, F) is similar in several 

 respects to that of Paiilinia as described by Radclyffe-Roberts and 

 Dirsh (loc. cit.) but presents some marked differences too. The dorsal 

 or anterior sclerites of the phallotreme cleft and corresponding apical 

 processes (valves of cingulum) (C, E, F, «) are small and mem- 

 branous at their apical ends. They are united anteriorly by the bridge 

 of the dorsal phallotreme sclerites (arch of cingulum) {t, t') which 

 is double, having an anterior or internal part {t) covering the posterior 

 wall of the spermatophore sac {Sps) and a posterior or external part 

 {t') that continues in the membranous wall of the dorsal lobe of the 

 aedagus at its dorsal part (see fig. 20 C, t'). 



The posterior or ventral sclerite of the phallotreme cleft (F, q) and 

 corresponding posterior or ventral apical processes of the aedagus 

 (apical valves of penis) (E, F, p) are continued externally into the 

 distal part of the dorsal lobe of the aedagus (r) and the rest of the 

 apical sheath of the dorsal lobe (sheath of penis). 



The lateral plates of the endophallus or endophallic plates (basal 

 valves of penis) (E, F, ti) are united by a posterior cuplike bridge 

 that covers the posterior wall of the spermatophore sac (Sps). The 

 lateral plates are not expanded laterally as in Panlinia, nor do they 

 show distinct gonophore processes as in this latter genus. 



REFERENCES 



Albrecht, F. O. 



1956. The anatomy of the red locust (Nomadacris septemfasciata Serville). 

 Anti-Locust Bull., No. 2$, 9 pp., 97 figs., London, 

 Carbonell, C. S. 



1957- Observaciones bio-ecologicas sobre Marellia remipes Uvarov (Or- 

 thoptera, Acridoidea) en el Uruguay. Fac. Human, y Cienc. Monte- 

 video, Invest, y Estud., Ser. Cienc. Biol., No. 4, 21 pp., 16 figs. 



