Rev. H. Clark on the Mexican Species of Hydropori. 181 



also flavous, and the sutuial line narrowly fuscons : abdomen and 

 undei'side black : legs and antenna rufo-flavous. 



H. infacetus approaches in general appearance and colour H. 

 Wardii : it differs, however, materially in form ; it is broader 

 and more parallel, the punctures also are coarser, and its elytra 

 are marked with distinct flavous medial longitudinal lines. It 

 is smaller than H. Kingii. From other species it differs by its 

 parallel form and distinct punctures on the surface of the elytra. 



A single specimen, taken by M. Truqui in Mexico, has no 

 distinct locality affixed to it. In the collection of Mr. Fry. 



B. Thorax striola utrinque basali. 



a. In elytris continuata. 



1. Breviter ovatus, sat convexus. 



11. H. Fry a, n. sp. 



H. breviter ovatus, ad apicem subattenuatus, punctatus, niger vel 



• ferrugineo- niger ; thorace fortiter punctate, undique ad latera 



antice transverse flavo notato, linea basali attenuata, constricta, 



elongata ; elytris maculis quatuor magnis, his ad humeros sub- 



circularibus, illis apicem versus elongatulis. 



Long. Corp. 1 Un., lat. | lin. 



A very pretty species, quite distinct in pattern from any de- 

 scribed as North-American species : it would probably range 

 under Section C. of Leconte's Analytical Table of Hydropori of 

 the States (Proceedings of Academy of Natural Sciences, April 

 1855) ; in general pattern it resembles at first sight H. deco- 

 ratus, Gyll., and H. cuspidatus, Kunz., Aube ; in form, size, and 

 also in pattern, it approaches H. pumilio, Dj., Aube, but is much 

 less coarsely punctate ; it is remarkable for the fine thread-Yike 

 character of its thoracic longitudinal strise, which are not short 

 and broadly defined, but elongated and narrow, as if formed by 

 the scratch of a pin ; there are no traces of striae on its elytra, 

 except in the scutellary region, where there is an abbreviated 

 row of indistinct punctures near the suture : the surface of the 

 elytra is sparingly covered with minute punctures : legs and an- 

 tennoi fuscous. 



My friend Mr. Alexander Fry has kindly placed at my dis- 

 posal the whole of the collection of Hydrocantharidse made by 

 M. Truqui, for the purpose of examination and description. I 

 have pleasure in dedicating to him this very distinct and pretty 

 species. 



Taken by M. Truqui in Mexico (locality unrecorded). In the 

 cabinets of Mr. Fry and the Rev. H. Clark. 



