94 Dr. C. Heller. 



GENUS PALINURUS. FABRICIUS. 

 DiTisio speciernm hue usqne cognitarnm. 



I. Carapax rostratus. Annulus antennalis supra angustissimus, curvatus. Antennae 

 externae basifere contiguae, antennae internae obtectae, flagellis brevibus. (Lan- 

 goustes ordinaires M. Edwards. - - Subgenus Palinurus Gray). 



A. Hostrum dilatatum, bipartitum, cornibus plant's, margine anteriorc spinulosis 



1. Palinnrus trigonns Dehaan. 



B. Hostrum simplex, acutum, spiniforme : 



a) Pedes antici insequentibus longiores 



'.'. I'alinurus longimanos M. Edwards. 



b) Pedes antici insequentibus breviores aut aequales. 

 a. Abdomen transverse sulcatum. 



a 1 Cornua lateralia frontis supra inermia, infra denticidata 



3. Palinnrns Tnlgari$ Latreille. 



a? Cornua lateralia frontis supra et infra inermia. 



Carapax et abdomen ubique tuberculis applanatis squammi- 

 formibus obtecta 



4. Palinnrns Lalandii Lamarck. 



Carapax ubique et abdomen media tuberculis acutis armata, 

 margo anticus et posticus abdominis laevis 



5. Palinaras frontalis M. Edwards. 



y9. Abdomen transverse non sulcatum 



6. Palinnrus Hiigeli! Heller. 



II. Carapax non rostratus. Annulus antennalis supra latus, subquadratus et hori- 

 zontalis. Antennae externae basi remotae. Antennae internae apertae, flagellis 

 elongatis. (Langoustes longicornes M. Edwards. - - Subg. Panulirus Gray). 



A. Abdomen transverse non sulcatum : 



Annulus antennalis supra duobus armatus dentibus. Carapax paulo spinosus 



7. Palinnrns fasciatas Fabricius. 



Annulus antennalis supra quatuor armatus dentibus. Carapax spinosissimus 



8. Palinnrns ornatns Bos^if^/ 

 Annulus antennalis supra sex armatus dentibus. Carapax spinosus et tuber- 



culosus 9, Palinnrns snlcatns Lamarck. 



