370 On a Collection of Odoiiata from Panama. 



of mandibles and lower mouth-parts paler; tips of mandibles, 

 tibia?, and tarsi black ; seventh and eighth segments con- 

 siderably widened, the seventh, which is twice as long as the 

 eighth, gradually widened, nearly from the base; ninth and 

 tenth segments successively narrower, about as long as broad ; 

 anal appendages as long as the tenth segment, conical, por- 

 rected, pointed at the tips. 



Wings hyaline ; pterostigma ochreous yellow, between 

 black nervures, covering six or seven cells ; one supratriau- 

 gular nervure on each wing: fore wings with 20-21 ante- 

 nodal and 13-14 postnodal cross-nervules ; triangle formed 

 of three cells, followed by one or two rows of three cells 

 and then several of two, increasing ; lower triangle traversed : 

 hind wings with 13-17 antenodals and 15-17 postnodals; 

 triangle traversed ; lower triangle free. 



One specimen. 



Very few females of this genus have been described ; but 

 the present specimen does not seem to agree with any 

 described male. 



Hetcerina occisa. 



Hetcerina occisa, De Selys, Syn. Cal. p. 44 (1853) ; Mon. Cal. p. 143 

 (1854). 



One well-marked male, with no special number. 



Hetcerina coja (?). 



? Libellula caja, Drury, 111. Ex. Ent. ii. pi. xlv. fig. 2 (1773). 



Calopteryx caja, pt., Ramb. Ins. Nevr. p. 226 (1842). 



Hetcerina caja, De Selys, Syn. Cal. p. 32 (1853) ; Mon. Cal. p. 104 



(1854). 

 Hetcerina hera, Hagen, De Selys, 11. cc. p. 32 (1853) ; p. 106 (1854). 



( $ , no. 19.) "Eyes black, lower and outer portion grey. 

 Epicranium with a red fascia horizontally (transversely *?) in 

 front of ocelli, and separated from the anterior portion, which 

 is fulvous, by a black line. Postclypeus purplish black. 

 Anteclypeus olivaceous. Labrum grey. Scape of antennas 

 grey. 



" Dorsal aspect of mesepisterna crimson, divided by the 

 black median line. Thorax and abdominal tergites 1-5 

 fuscous ; fitth tergite much darker, and merging into the 

 colour of tergites 6-10 and cercopoda, which is dark green." 



A series of twenty-two specimens, males and females. If 

 this insect ultimately proves not to be the true H. caja, Dru., 

 Hagen's name of H. hera (omitted in my Catalogue) must be 

 adopted for it. 



