's RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 121 



the sixth female ventral segment is "émarginé de chaque côté du milieu", 

 but this slight emargination is rarely present, the apical margin being 

 usually obliquely straight on each side of the middle. The hemelytra are 

 said to be "lurides", but they are usually much darker. The dorsum of 

 the abdomen is very inconstant in colour, varying from black by all 

 gradations to waxy yellow. Breddin describes the first male genital seg- 

 ment ("8. Abdominalsegment") as "zylindrisch, merklich langer als die 

 beiden vorhergehenden Sternite zusammengenommen", but he had before 

 him a specimen with projecting genital segments. These can be telesco- 

 pically pushed out and drawn in at will; if they are drawn in, as they 

 normally are, the first genital segment is not longer than the last ventral 

 segment. It is not advisable to state the length of the first male genital 

 segment unless it is in its normal drawn-in position. 



3. Tenagogonus pravipes n. sp. 



Opacus, supra luride ochraceus, subtus pallide testaceus, linea trans- 

 versa subbasali verticis, vittis duabus e petiolo communi ab ilia linea 

 emisso ortis, antrorsum levissime divergentibus, antice conjunctim basin 

 clypei subattingentibus, vitta verticis paullo intra oculos, vitta laterali 

 ab oculo ad basin antennae ducta, vitta curvata sublaterali pronoti antice 

 cum vitta alterius lateris anguste cohaerente, linea media percurrente 

 pronoti et processus ejus, linea angusta sublaterali processus pronoti 

 paullo ante apicem ejus abrupta, vitta laterali propleurae, vitta lata 

 partis dorsalis meso- et metapleurae, vitta laterali postice abbreviata meso- 

 pleurae, vittula ante acetabula media, margine apicali superiore horum, 

 vittula acetabulorum posteriorum, vitta sublaterali connexivi et ventris in 

 maculas subdissoluta articuloque ultimo nitido rostri nigris, metanoto, 

 segmentis duobus primis dorsi abdominis suturisque dorsalibus segmen- 

 torum ceterorum hujus infuscatis, antennis et pedibus (coxis exceptis) 

 pallide fuscis. Caput latitudine sua paullo longius, supra pilis paucis longis 

 erectis praeditum, fronte sat fortiter declivi, oculis antrorsum levissime 

 convergentibus, antennis corpore longioribus, articulis primo, tertio quar- 

 toque subaeque longis, primo basin versus nonnihil curvato, secundo ad- 

 jacentibus breviore, rostro medium mesosterni haud attingente. Metaster- 

 num segmentis tribus primis ventris unitis fere aeque longum, orificio 

 prope marginem posticum posito. Abdomen ((ƒ) parte sua dimidia dor- 

 sali coxas posticas superans, segmento ultimo dorsali duobus praeceden- 

 tibus unitis parum longiore, apice truncato, segmento ultimo connexivi 

 ultra ultimum dorsale breviter vix acute retrorsum prominulo, ventre 

 quam dimidio mesosterni paullo longiore, parte sua pone segmentum 

 quartum sita coxas posticas superante, segmento sexto medio duobus prae- 



