750 On Aquatic Carnivorous Coleoptera or Dytiscide. 
transversim in medio luteo ; elytris nigris, maculis minimis irregulariter rotundatis undique luteo-ornatis, 
et fascia nigra confusissima ultra medium transversim notatis. Long. 12 m.m., larg. 64 m.m.” 
[Sueceeded by a description. | 
A single individual in the collection of Castlenau, who received it from Brazil. The species is probably 
closely allied to A ornaticollis (No. 1059).—D.S. 
1175. Acilius laticinctus, Lec., Ann. Lye. V. p. 203. North America. 
“‘Fere ellipticus minus convexus, ferrugineus, supra nigro-piceus nitidus, thorace latitudine triplo 
breviore, lateribus late fasciaque transversa angusta luteis, elytris margine lato nigro-irrorato, fascia 
subbasali, (sepius interrupta) apiceque luteis, ore, epistomato, macula verticali transversa, pedibusque 
anterioribus flavo-testaceis. Long. 45. Femina, thoracis lateribus rugosis, elytris versus basin striolis 
approximatis strigosis. Ad flumen Colorado, et Vallecitas frequens. A. inciso similis.” 
A male individual of this species recently communicated to me by Dr. Leconte seems to be structurally 
very closely allied to Dytiscus basilaris (No. 1071); and it must remain at present an open question 
whether it be a distinct species ; if not it is at any rate the most extreme variation I have seen of D. 
basilaris.—D. 8S. 
1176. Acilius maculatus, Aubé, spec. p. 141. Mexico. 
‘“‘Ovalis, paulo ellipticus, convexiusculus, supra nigro-cinereus, infra testaceus, thorace luteo, antice et 
ostice in medio nigro; elytris luteis, punctis minimis confluentibus, fascia transversa ultra medium 
p f=) > ? ? 5 
maculaque ad apicem confuse nigro-ornatis.” 
“« Mas: elytris levibus. Femina : ad basin lineolis brevissimis punctiformibus impressis ; thorace 
levi. Long. 12—123 m.m., larg. 7—74 m.m.” 
[A description follows, l.c., the above. | 
This is placed by Aubé near A. ornaticollis (No. 1059), to which it is probably similar.—D. 8. 
1177. Acilius subimpressus, Motsch., Bull Mose., 1845, I. p. 30. Kamtschatka. 
“ Acilius subimpressus m. du Kamtschatka, ressemble aussi 4 l’espéce de Sitka, mais il s’en distingue 
par les couleurs du dessous du corps.” 
I do not think the above can be considered a “description,” however wide be the extension anyone 
may be inclined to claim for that term.—D. S. 
1178. Acilius tomentosus, Motsch., Bull. Mosce., 1845, I. p. 30. Russia. 
“ Acilius tomentosus, m. C’est une espéce des environs de St. Petersbourg qui ressemble beaucoup a 
PA. sulcatus L., mais qui est constamment plus petite.” 
These few words do not constitute a description, and are moreover perfectly applicable to the well 
known European Dytiscus fasciatus, (No. 1053).—D. 8. 
1179. Agabus ameenus, Solsk., Fedt. Turk., II, 5. p. 142. Urgut. Turkestan. 
“Ovalis, apice utrinque subacuminato-rotundatus, subconvexus, glaber, nitidus ; piceo-niger, ore, 
antennis, vertice maculis duabus, pedibus segmentorumque abdominalium marginibus ferrugineis, pedi- 
bus posticis fusco-maculatis ; capite thoraceque nigro-zneis, virescentibus, hoc lateribus late testaceis ; 
elytris fusco-testaceis, basi lateribusque dilutioribus.” 
