206 The Carabid genus Phcropsophus. 



the costss are sharp and little elevated, and the intervals 

 are shining and strewn with minute granules. This con- 

 dition is only known to occur elsewhere in the South 

 American P. rivieri, Dem. (of which I consider P. jlexuosus, 

 Chaud., to be only a variety). The coloration of P. heathi 

 is almost of the usual type, but with a greater reduction 

 than usual of the black pigment, the median orange band 

 being continuous and, with the broad apical border, enclos- 

 ing an approximately oval black patch, while a more 

 irregular patch is formed anteriorly. 



The following Madagascan species should be placed 

 with P. emarginatus according to Chaudoir's tabulation, 

 but it has a close relationship to P. humeralis (o?nostigma), 

 Chaud., from which it differs in not having functional 

 wings, with the corresponding conformation of the elytra. 



P. perroti, sp. n. (Plate IX, fig. 4.) 



Apterus, testaceus, macula verticis cordiforme, prothoracis margine 

 toto lineaque mediana, elytris (puncto humerali inarginibusque 

 externis exceptis), abdomine, pectore partim genubusque nigris ; 

 prothoracis lateribus leviter arcuatis ; elytris fere ad apices leviter 

 ampliatis, humeris vix perspicuis, apicibus conjunctim curvato- 

 truncatis, costis angustis, puncto humerali, limbo (cum illo juncto) 

 apiceque flavis, apice distincto, externe lato sed ad suturam attenuate. 



Long. 17 m.m. 



Hab. N. Madagascar, Diego Suarez Bay. 



This insect well illustrates the important divergences 

 which in this genus may underlie apparently insignificant 

 superficial distinctions. At first sight this species seems 

 almost identical with P. humeralis, but in addition to 

 the atrophy of the wings there are numerous slight differ- 

 ences. The spot on the vertex of the head is not pro- 

 duced backwards, the thorax is more widened in front, 

 the shoulders are less prominent and the apices of the 

 elytra are truncated more sharply and in a uniform curve. 

 The dorsal ridges are narrower, and, finally, the antennae 

 are longer and stouter. Four specimens have been 

 kindly presented to us by M. Rene Oberthur, by whose 

 wish I have named it after the collectors, Messrs. E. and B. 

 Perrot. 



