404 On Aquatic Carnivorous Coleoptera or Dytiscide. 
very close coarse punctures, and finer ones mixed with them, behind the middle the 
punctuation is closer, and the punctures of one size, and on this part a fine short 
pubescence may be detected; at the base there may be seen indistinctly two 
irregular strie, similar to those which are much more distinct in Dytiscus impresso- 
punctatus, (No. 409). 
Egypt, (Dr. Millingen). 1136. 
411. Hydroporus corpulentus, Schaum, M.C.— Ovalis,convexus, parce punctatus, 
supra testaceus, infra niger, fronte juxta oculos, prothoracisque puncto medio 
nigro-fuscis, elytris preter suturam lineis quatuor, secunda quartaque basin 
attingente, lineolisque externis tenuibus nigris. Long. 2%, lin.” (Schaum). Coxis 
posterioribus externe parce punctatis. Long. 5, lat. 2% m.m. 
I have seen only a single female of this species, it is of very much broader form 
than D. parallelogrammus (No. 416); the punctuation of the wing-cases is rather 
coarse, and not dense, the intermixed fine punctures are indistinct. Schaum says 
nothing of the male characters. It appears to be very like H. saginatus, but to 
be very much broader. 
Europe, (Crimea). 1135. 
412, Hydroporussaginatus, Schaum, M.C. —“Ovalis, convexus, punctatus, nitidulus, 
supra testaceo-ferrugineus, infra niger, capite postice obscuriore, prothoracis 
lateribus obliquis vix rotundatis, puncto medio fusco, elytris preeter suturam lineis 
quatuor, secunda, nonnunquam etiam quarta basin attingente lineolisque duabus 
externis nigris. Long. 24 lin.” (Coxis posterioribus externe parce minus fortiter 
punctatis). Long. 4%, lat. 23 m.m). 
Mas, “valde nitidulus, femina minus nitida crebrius et subtilius punctata,” (ex 
Schaum). 
I have seen only one individual of this species. It is shorter than Dytiscus paral- 
lelogrammus (No. 416), with the punctuation of the elytra consisting of moderately 
large not dense punctures, which at the base are more distant and have on the 
interstices not very distinct finer punctures: this individual appears to be a female, 
and differs from D. parallelogrammus, independently of its size and punctuation, 
by the more prolonged black lines on the elytra. 
Greece, (Nauplia, Kiesenwetter). Asia Minor? 204. 
413. Coelambus inscriptus, n. sp.—Ovalis, sat angustus, sine pubescentia, nitidus, 
testaceus, abdomine pectore, elytrorum sutura, linea postice dilatata, maculisque 
duabus nigris ; elytris sat crebre et fortiter punctatis ; coxis posterioribus parce 
fortiter punctatis. Lorg. 32, lat. 2 m.m. 
