1S51.] 335 



3. P. casta, pallida, thorace semicirculari basi truncato, angnlis posticis 

 non productis, lateribus minus subito reflexis, cum apice late punctatis, disco 

 loBvij roseo, ante basin vix foveato, elytris subtiliter granulatis ; antennis capite 

 postpectoreque t'uscis. Long. -3. 



Habersham Co., Georgia, May. A very pretty little species ; the female is 

 similar to the male. 



4. P. scintillans, fusca, thorace pallido semicirculari, basi truncato, 

 angulis posticis non productis, lateribus snbsubito reflexis cum apice punctatis, 

 disco obsolete biimpresso, roseo, medio infuscato, elytris subtilissime granulatis, 

 margine, sutura, scutelloque pallidis, pedibus testaceis. Long. '32. 



Lampyris scindiUans Say. J. Ac. Nat. Sc. 5, 163. 



Middle States. This species is only distinguished from the next by the elytra 

 being more finely and almost indistinctly granulate ; the female has short elytra, 

 and the antennae but little longer than the thorax. 



5. P. m a r g i n e 1 1 a , fusca, thorace pallido, semicirculari, basi trun- 

 cato, angulis posticis non productis, marginibus subito reflexis, apiceque late 

 punctatis, disco vix canaliculato, roseo, macula centrali fusca, elytris subtiliter 

 granulatis, margine sutura scutelloque pallidis, pedibus testaceis. Long. -32. 



This is the common northern species, and is also found in Missouri. The 

 female only differs from the male by the last abdominal segment. Were it not 

 for the difl'erence in sexual characters, I should not have separated this from 

 the last species, from which it can hardly be distinguished; the fuscous spot of 

 the thorax is sometimes wanting. 



6. P. punctulata, fusco-picea, thorace pallido, semicirculari, basi 

 truncato, angulis posticis non productis, marginibus minus subito reflexis 

 apiceque punctatis, disco roseo, canaliculato, subtiliter punctato, macula centrali 

 apiceque infuscatis, elytris confertim granulatis, margine sutura, scutelloque 

 pallidis, femoribus coxisque testaceis. Long. '37. 



Missouri Jerritory; the female has short elytra; the antennae are nearly as 

 long as in the male. 



7. P. consanguinea, fusco-picea, thorace semicirculari, pallido, 

 basi late emarginato, angulis posticis productis, disco roseo, medio nigro-vittato, 

 vix canaliculato, marginibus subito reflexis, apiceque punctatis, elytris confertim 

 granulatis, margine suturaque pallidis, femoribus testaceis. Long. -32 42. 



Southern States, abundant; the female is similar to the male, but has only 

 the antepenultimate segment of the abdomen luminous. 



8. P. obscurella, fusco-picea, thorace semicirculari, basi late 

 emarginato, angulis posticis vix productis lateribus testaceis subito reflexis, 

 apiceque punctatis, disco vix impresso, toto fusco, elytris confertim granulatis, 

 margine suturaque anguste pallidis. Long. -43. 



One specimen ; Missouri Territory. Very much resembles P. ardens, but 

 differs essentially in having ihe base of the thorax emarginate. 



9. P. 1 i n e e 1 1 a , linearis, fusco-picea, thorace pallido semiovali, basi 

 truncato, angulis posticis subproductis, marginibus subito reflexis, apiceque 

 anguste punctatis, disco vix impresso roseo, medio nigro-vittato, elytris confertim 

 granulatis, margine suturaque anguste pallidis. Long. -27. 



