Mr. Westwood's Observations on the Genus Derbe. 13 



joint greatly elongated and emarginate at the top, do not materially differ 

 from the typical character of the antennse of the genus, whilst the veining of 

 the wings, differing as it does from that of any of the other subgenera already 

 described, can only be considered, as we have already seen, a character of sub- 

 generic value. As in Otiocerus we find a similar apical branching of the me- 

 diastinal vein (Tab. I. fig. 6 A, a), the subcostal vein (b) arises from the medi- 

 astinal one, whilst the median vein (c) is of very inferior value. The strong 

 vein is evidently identical with the vein o o( Mysidia, &c., although here it is 

 quite unconnected with the little transverse vein q. It consequently here be- 

 comes a distinct branch of the postcostal vein. The large cell which it partly 

 forms is irregular in the two fore-wings of Mr. Kirby's specimen of j4. Bon- 

 netii, (being the only individual I have seen of the subgenus, and from which 

 the accompanying figures of the fore- and hind-wings are derived,) the left 

 wing having only one branch emitted from its apex, whilst in the right wing 

 there are two (fig. 6 B**). 



A. Bonnetii is an inhabitant of Georgia in North America. 



M. Guerin has figured an insect in his 'Iconographie du R^gne Animal,' In- 

 sectes, pi. 58. fig. 13, under the name of Anotia coccinea, which he has described 

 in the text of the ' Voyage de la Coquille' as an inhabitant of the Australian 

 Archipelago, and which diflfers so materially from the type of the subgenus, 

 especially in the veins of the wings, as well as their large size, that it will be 

 necessary to establish a distinct subgenus for its reception : I propose to name 

 it Deribia coccinea. 



Under the subgeneric name of Patara, I propose to describe two minute in- 

 sects, inhabitants of the West Indian islands, which are closely allied to Anotia 

 in their general characters, and in the large size of the second joint of their 

 antennse ; but in these insects this joint forms a very long, compressed and flat 

 plate, of equal breadth throughout, and standing out from the head ; and the 

 veins of the wings are also quite differently arranged. The following are its 

 technical characters : 



Patara. fVestw. 

 Caput mediocre, fronte in carinara parvam producta. Oculi maximi, subtiis emarginati. 

 Ocelli obsoleti. Clypeus magnus. Rostrum ad basin pedum posticorum extensum. 



