47$ Linmean Society. 



Lydda. Rostrum brevius. Antennae breves. Alae anticae, valde elongat.-e, 

 apice rotundatae, directione venarum anomala ; regione venae medianae 

 minima, aut potius ejus rami in venae postcostalis ramos transformati. 



The type of this subgenus is Derhe elongata, Fab., from New 

 Holland, in the cabinet of the Linnaean Society. 



Zeugma. Rostrum ultra basin pedum posticorum extensum. Antennae 

 rotundatae. Ocelli obsoleti ? Prothorax lateribus concavo-dilatatis pro 

 antennis recipientibus. Alae anticae oblongo ovatae, apice subtruncatae, 

 venis numerosis longitudinalibus ; vena postcostali ramos 8 postice, 

 mediana tantiim tres emittente. 



This subgenus appears intermediate between Derhe and Thracia 

 on the one hand, and Mysidia on the other. The only species is — 



Z. vittata, fulva ; alis anticis flavidis vitta lata media fusca apicem 

 versus deflexa altevaque postica\ parallela apice vitta abbreviate fas- 

 ci&que tenui transversa fuscis. Expans. alar. lin. In Mus. Soc. Linn. 



Thracia. Rostrum pectore longius. Antennae capite fere duplo longi- 

 ores. Oculi orbiculati. Ocelli nulli ? Alae anticae longissimae, angustae, 

 apice truncatae, venis 12 longitudinalibus inter angulum apicalem et 

 analem. 



This subgenus is proposed for the two African species, D. sinuosa 

 and D. nervosa, described by Boheman, and considered by him as 

 constituting the first section of the genus. Notwithstanding the 

 difference of its geographical range, the author adds the following 

 fine species from Java, which agrees with the other two in all the 

 sub- generic characters : 



T. javanica, fulva ; abdomine obscuriore vittgl centrali pallidiori, alis 

 pallide hyalinis anticis fascial lata costali fusca. Expans. alar. lin. 

 Java. D. Horsfield. In Mus. Soc. Mercat. Ind. 



Phenice. Rostrum pectore vix longius. Antennae capite manifeste bre- 

 viores. Oculi oblongi, vel obovati, distincte emarginati. Ocelli di- 

 stincti. Alae anticae quam in Thracia breviores, apice subrotundatae, 

 venis fere ut in Mysidia dispositis, 12 longitudinalibus inter angulum 

 apicalem et regionem analem. 



This subgenus is proposed for the three African species D.fritillaris. 

 fasciolata, and stellulata, described by Boheman, and forming his 

 second section of Derhe. 



After reviewing the characters of the preceding subgenera, the 

 author expresses the opinion that Otiocerus (including Hypnis, 

 Burm.) and Anotia of Kirby, must also be considered as subgenera 

 of equal rank with the preceding; that Anotia coccinea, Guer. Icon. 

 R. An. MS. pi. 58, f. 3, forms another subgenus ; and that the two 

 following groups also constitute two other subgenera of Derhe : 



Patara. Rostrum ad basin pedum posticorum extensum. Oculi maximi, 

 subtus emarginati. Oculi obsoleti. Antennae maximae, compressae, 

 verrucosae, apice subtruncato et setigero. Alae anticae longitudine 

 mediocres, apice rotundatae, venis paucis cellulisque tribus discoidali- 

 bus. 

 P. guttata, capite tboraceque fulvis, alis anticis griseo-fuscis margine albo- 

 guttatis. Expans. alar. lin. Insula S u Vincent. D. Guilding. Mus. 

 D. Hope. 



