18 



less parallel elytra, with interstices punctured in more regular 

 rows. 



Fraser Range. 

 G. 'mandibular e, sp. nov. Elongatum ; parallelum ; minus 

 nitidum ; piceo-nigrum, antennis apicem versus fulvo- 

 pubescentibus ; capite modico pone oculos modice angustato, 

 labro sat elongato ; protliorace quam longiori (feminti; 

 dimidia parte, maris etiam raagis) latiori, caualiculato, disco 

 transversim strigato in medio Irevigato, partibus ceteris 

 punctulatis, angulis anticis rotundatis partem interjacentem 

 sinuato-truncatam vix superantibus, lateribus crenulatis 

 fortiter rotundatis mox ante basin oblique fere rectis, basi 

 bisinuata ; elytris striatis, interstitiis vix convexis minus 

 foi'titer sat crebre sat confuse punctulatis ; f emoribus anticis 

 subtus ad basin angulatim dilatatis ; ligula ut G. eremitce. 

 Maris mandibulo sinistro perlongo falciformi, dextro nmlto 



breviori intus ante apicem dente magno armato. 

 Femina; mandibulis brevioribus, dextro apicem versus baud 



dentato. Long., 17—22 1. ; lat., 6' — 6-1- ]. 

 Distinct, inter alia, from G. Bostocki and eremita by its 

 elongate parallel form and pitchy tone of colour; from longijxnnis 

 by its very differently shaped ligula ; from grande, M'acl. (accord- 

 ing to Mr. Bates' remarks on that species in E.M.M., Nov., 1891, 

 though not according to Dr. (xestro's figui-e in Ann. Mus. Gen., 

 1875), by its prothorax not differing much in shape posteriorly 

 from that of titan, longipenne, &o. ; from grande, Macl. (as 

 figured by Dr. Gestro), by its prothorax much less produced in 

 front; from titari. Thorns, (according to Mr. Bates and to 

 Queensland specimens in my collection wliich I have regarded as 

 that species, but not according to Dr. Gestro's figure), by the 

 very differently shaped mandibles of its male; from intermedia- 

 Gestro, by its very elongate form ; and from the other recognise 

 ably described species of Gigadema by the central part of the disc, 

 of its prothorax devoid of puncturation. 



The two .specimens described above, which I believe to be male 

 and female of one species, present slight differences, which I 

 regard as accidental variations. In the female the hevigate por- 

 tion of the disc of the prothorax. is considerably smaller than in 

 the male, moderately close puncturation occupying all the surface 

 except the central third part. In the female, moreover, the 

 ■elytral interstices are more closely and confusedly punctured than 

 in the male, each interstice bearing about four irregular rows of 

 punctures; while in the male the puncturation in many places 

 falls into three, or even only two, faiily-dehned rows. The 

 strongly bisinuate base of the prothorax seems to bo a notable 

 character, and no other species of the genus that T have seen has 



