780 On Aquatic Carnivorouti Colcoptera or Dytiscidce. 



fascia ornatur nee baseOiS inarguiem nee suturam attingenti, latiori ad latera, attenuation versus scutellum, 

 fascia post-media internijrta est, latior ad margincm, deinde irregularis et angulata macula minori con- 

 tinuitur, macula secunda etiam minori suturam mediam approximat ; apicera juxta sed haud attingens, 

 macula latior ad marginem, attenuatior versus (sed neque pertingens) suturam ; margo quoque i[)se fiavus 

 est: corpore subtusfuseo j pedibus rufo-fuscis, anticis flavis; antennis flavis. Long. corp. lin. 5| ; !iit.,lin. 3i." 

 Cape Coast Castle, during the short rainy season. 



1312. Hydaticus histrio, Clark, Tr. Ent. Soc. 1864, p. 221. Northern India. 



■' Ovalis, modice attenuatus, modice convexiusculus, niger, flavo-omatus ; capite flavo, ad basin late et 

 transverse nigi-o ; thorace nigro, ad latera late flavo ; scutello triangulari, nigro ; elytris subparallelis, 

 pimctorum seriebus duabus undique (punctis confertis, minutis, et inajqualiter dispositis), quoad colorem 

 nigris, apud basin (sed baseos marginem haud omnino attingens) macula subtriangularis ante medium 

 elytrorum inter strias priniam et secundam sese dirigit, vitta etiam marginalis a humeris propemodum 

 apicem attingit ; coipore subtus nigi-o ; pedibus flavis, posticis fuscis ; antennis flavis. Long. 6 lin., 

 lat., lin. 3." 



" A distinct species from Northern India, an example of which I received some years ago in the Gory 

 collection. It is allied to ■I'ittatus, Fab., but besides being of a pattern which it seems almost impossible 

 to i^lace as an extreme variety of that variable sjiecies, it is manifestly narrower and more constricted 

 in form." 



1313. Hydaticus lateralis, Cast., Et. Ent. p. 97. South America. 



" Noir ; bord anterieur de la tete et cotes du corselet d'uu jaune ferrugineux ; elytres avec un trait de 

 meme couleur, allonge et place deniere Tangle hiimeral, pres du bord lateral, et s'eteiidaut jusque vers 

 le tiers de I'elytre ; un autre place sur le bord et qui, naissant vers le milieu, va jusqu' a I'exti'emite ; et 

 enfin une tache triangulaire situee pres du bord lateral, un peu en arriere du milieu ; dessous du coi^ps 

 d'uu noir briinatre ; autenues et deux premieres paires de pattes d'uu brun jaune. Long. 6 lignes, larg> 

 3J lignes." Cayenne. 



This insect is also described by Aube (Spec. p. 189). — D. S. 



1314. Hydaticus madagascariensis, Aube, Spec. p. 210. Madagascar. 



" Ovalis, convexus, postice depressiusculus ; thorace nigro, ad latera luteo ; elytris nigris, cum vitta 

 versus latera longitudinali, paulo obliqua, punctis duobus ad basin transversim dispositis, alteroque ad 

 apicem, luteo-testaceis ; corpore subtus nigro-piceo. Long. 14^ m.m., larg. 8i m.m." 



\A description follows, 1. c, this diagnosis.] 



1315. Hydaticus nauzieli, Fairm., Ann. Soc. Fr. 1859, BiiU., p. 52. France. 



"Long, 12 m.m. Ovalis, parum convexus, rufescens ; capite prothoraceque dilutis, cajiite basi ; 

 prothorace vix iufuseati, hoc basi angustissime nigi-o-marginato ; elytris brunneis, rufo-vermiculatis, 

 margine externo rufescente ; subtus cum pedibus, i-ufo-testaceus. Trouve a Sorreze par M. le professeur 

 Nauziel ; distinct par sa coloration de toutes les espcces du meme genre." 



I supjose this to be Dytiscus leander (Xo 1032). — D. S. 



131G. Hydaticus nigrc-marmoratus, Clk., Tr. Ent. Soc, 1864, p. 220. Angola. 



" Oblongo-ovalis, depressiusculus, Isevis, rufo-testaceus, nigro-maculatus : caj)ite rufo, ad basin trans- 

 verse et ad interiorem oculoram marginem nigro ; thoi-ace lato, subtilissime punctulato, antice excavato 



