404 On Aquatic Carnivorous Coleojjtera or Diitisciia;. 



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 stria?, simi'ar to those which are much more distinct in Dytiscus impresso- 

 punctatus, (No. 409). 



Egyi^t, (Dr. Millingen). 113G. 



411. Hydroporus corpulentus,Schaum, M.C. — " Ovalis,convexus, parce punctatus, 

 supra testaceus, infra niger, fronte juxta oculos, prothoracisque puncto medio 

 nigro-fuscis, elytris prgeter suturam lineis quatuor, secunda quartaque basin 

 attingente, lineoli.sque externis tenuibus nigris. Long. "\, lin." (Schaum). Coxis 

 posterioi'ibus externe parce punctatis. Long. 5, lat. 2i- m.ui. 



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. Hydroporus saginatus, Schaum, M.C. — " Ovalis, convexus, punctatus, nitidulu s, 

 supra testaceo-ferrugineus, infra niger, capite postice obscuriore, prothoracis 

 lateribus obliquis vix rotundatis, puncto medio fusco, elyti'is prreter suturam lineis 

 quatuor, secunda, nonnunquam etiam quarta basin attingente lineolisque duabus 

 externis nigris. Long. 21 lin." (Coxis posterioribus externe parce minus fortiter 

 punctatis). Long, ih, lat. 2| m.m). 



J/as, " 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 (Xo. 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 i^unctuation, 

 by the more ^jrolonged black lines on the elytra. 



Greece, (Nauplia, Kiesenwetter). Asia IMinor? 204. 



4 1 3. Coelambus inscriptus, n. sp. — Ovalis, sat angustus, sine pubescentia, nitidus, 

 testaceus, abdoraine pectore, elytrorum sutura, linea postice dilatata, maculisque 

 duabus nigris ; elytris sat crebre et fortiter punctatis ; coxis posterioribus parce 

 fortiter punctatis. Lorg. 3l, lat. 2 m.m. 



