370 On a Collection of Odonata from Panama. 



of mandibles and lower nioulli-i)arts paler; tips of mandibles, 

 tibiffi, 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 tii)S. 



Wings hyaline; pterostigma ochreous yellow, between 

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

 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 witli any 

 described male. 



Hetcerina occt'sa. 



HeffPn'na occim, De Selys, Syn. Cal. p. 44 (1853) ; Mon. Cal. p. 143 

 (1854). 



One well-marked male, with no special number. 



Hetcerina caja (?). 



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



Cnlopteryx 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, //. cc. p. 32 (1853) ; p. 106 (1854). 



(cJ, no. 19.) ''Eyes black, lower and outer portion grey. 

 Epicranium with a red fascia iiorizontally (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 antennge 

 grey. 



" Dorsal aspect of mesepisterna crimson, divided by the 

 black median line. Thorax and abdominal tergites 1—5 

 i'uscous ; fifth 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 //. caja^ Dru., 

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

 adopted for it. 



