778 On Aquatic Carnivorous Coleoplera or Dijtiscidce. 



mcxUce rotundato, minus tenuiter marginato ; elytris guttulLs duabiis pellucidis obsoletis. Fem. TA)ng. 

 •11 lin." 



" G. affini Pavk. affinis, seJ jtaulln brevior et latior, scnlpcma elj-trorum fere ut in G. tai-sato, Zett. 

 Caput latiusculuin, sulitilissime veticulato-strigosum, nigrum, labro maculisque duabus verticis rufis, 

 irapressionibus anticis parvis, sed satis profiindLs ; palpis ferrugineis, maxillaribus apice angiiste piceis, 

 labialibus articulo secundo snbtiis obsoletissime tuberculato-prominulo. Antennie prothoracis basin 

 attingentes, feiTuginese, articulo ultimo apice piceo. Prothorax fortiter transversus, antice angustatus, 

 latei-ibus modice rotundatLs, minus subtiliter marginatLs, augulis anticis productis, acutiusculis, posticis 

 subrectis, basi utriuque obsoletissime sinuato ; supra modice convexus, niger, nitidus teneo-micans, 

 subtiliter sed minus dense reticulato-strigosus, serie punctorum basali medio late interrupta, apicali 

 Integra, ambabus e punctis minutis valde obsoletis et irregularibus constitutLs. Elytra ovalia, basi pro- 

 thoracis latitudine et lateribus cum illo continue arcuata, postice rotundato-angustata ; supra modice 

 convexa, nigra, nitida, seneo-micantia, subtiliter sed minus dense reticulato-strigosa, cellulis latis, 

 iiTegularibus, versus apicem minoribus, seriebus tribus e punctis inordinatis impressis postice sine online 

 dispereis ; guttulis duabus obsoletissimis pellucidis. Corpus suljtus nigi-um, laciniislateralibus metasterni 

 subtiiaugularibus. Pedes ferruginei, femoribus, praosertim posticis, obscurioribus, f\iscis, tarsis posticis 

 unguiculis insequalibus, apice cm-vatis." 



Rare ; found at Kuopio (63°), in Gothland. 



1304. Gaurodytes suturalis. Crotch, Tr. Am. Ent. See. IV, p. 423. North America. 



" Regularly ovate, black, above slightly bronzed, subopaque ; thorax with the sides hanUy rounded, 

 posterior angles rectangular ; elytra closely reticulate, the sutural region nearly smooth, dorsal punctures 

 evident irregular, the yellow spot beyond the middle is but little evident ; body beneath strigulose, 

 posterior femora obsoletely punctvdate, tibise with a regular subdorsal row of deep punctures. Mas, 

 anterior claws unarmed Length "35 inch." 



" Nevada." 



1305. Hydaticus apicalis. Boh., Ins. Caflr. I, page 239. Caffraria. 



" Ovalis, convexiusculus, nitidus, suljtus piceus ; capite llavo-testaceo, postice nigro, flavo-trimaculato ; 

 prothorace subtiliter, crebre puuctulato, flavo-testaceo, pone medium vitta transversa lougioii, utrinque 

 abbreviata, nigra, medio ramulum brevem, apice dilatatum anterius emittente, elytris nigris, ilorso 

 parcius, ad latera crebrius flavo-iiToratis, plaga magna, comnuuii, aj)icali flava, medio confertim nigro- 

 irrorata. Long. 12g, lat. 6j m.m." Caffraria interior. 



\An exteiuled description J olloius this diagnosis.^ 



The species is probably allied to Hydaticus sobiinus and galla (Nos. 1041 and 2.) — D. S. 



1306. Hydaticus aruspex, Clk., Tr. Ent. Soc, 1864, p. 212. China. 



" Oblongo-ovalis, parallelus, punctato-striatus, subnitidus, niger : capite fiavo, ad basin late nigra 

 (inter oculos, apud vittie nigrie margin em, flavo-bimaculato) ; thorace lateribus rotundatis, mai-ginem 

 juxta undifjue impresso, et antice transverse (sed obsolete et tenuiter) depresso, et pvinctato ; quoad 

 colorem flavo, ;ul basin late et transverse nigi-o (vitta nigra ad medium lata, latera versus teuuior, hand 

 margines attinet) ; scutello transverso-triangulari, nitido nigi'o ; elytris paralleUs, crebre subtUissime 

 punctatis, etiamque seriebus 3 punctorum (quorum externa penitus obsoleta est) omatis, colore nigi-is, 

 111 ir'.rinibus undique late et sequaliter a humeris penitus ad apicem fla\'is ; corpore subtus nigro-fusco ; 

 jiediliu-; rufis; antemiis rufo-flavis. Long. corp. lin. 61; lat. lin. 3|." 



'■ Parallel in form, like ruficollis, Fali . though much narrower than that insect; the species liefore u-i 



