238 PROCJJL'DIXCS OF Tiin ^'ATIONAI. MIHFAJM. vol.51. 



segments in the middle), apical spines of last abdominal segment, a 

 vitta to upper side of genital segments, an apical spot to all ace- 

 tabula, a basal streak to middle acetabula, and a sublateral vitta to 

 venter (but faintly indicated in the male) black; a line exteriorly 

 bordering the lateral vittae of the mesonotum, a spot at basal angles 

 of mesonotum, a spot on upper side of acetabula, and a slightly 

 waved line interiorly bordering the ventral vittae, clothed with very 

 short but thick golden yellow sericeous pubescence; antennae, last 

 two joints of rostrum, an upper (abbreviated) and lower vitta to 

 fore femora, the fore tibiae and tarsi, and the four posterior legs 

 (except coxae and trochanters) fuscous black. Head a trifle longer 

 than broad, anteocular part a little shorter than the eyes, distinctly 

 broadening from anterior angles of eyes to apex of antenniferous 

 tubercles; eyes obliquely produced backward a little beyond base of 

 head, twice broader than the interocular space at its narrowest place ; 

 rostrum slightly passing anterior margin of prosternum, antennae 

 about reaching the middle of the body, first joint a little longer than 

 head and distinctly longer than the two following joints united, 

 second joint scarcely more than half the length of first and twice 

 the length of third, fourth subequal to second. Pronotum a little 

 longer than the vertex from its base to the apex of the eyes, a little 

 rounded at the sides, rather broadly longitudinally impressed in the 

 middle, apical margin straight, basal margin convexly rounded. 

 Mesonotum in the middle three times longer than pronotum, slightly 

 widening from apex to base, lateral margins straight, apical margin 

 sinuate, basal margin bisinuate, shortly and roundedly produced be- 

 tween the sinuosities. Metanotum in the middle very slightly 

 shorter than pronotum. Mesosternum somewhat longer than 

 mesonotum, shortly and roundedly produced at apex between the 

 fore coxae. Metasternum one-third the length of mesost^nnum, a 

 trifle longer (female) or very distinctly longer (male) than the two 

 first ventral segments together, the orificium placed in the trans- 

 versely impressed line running a little in front of the posterior mar- 

 gin. Abdomen above as long as (female) or somewhat shorter than 

 (male) thorax, beneath as long as mesosternum and metasternum 

 together; connexivum in the male strongly reflexed, but not quite 

 erect, in the female very strongly inflexed over the dorsum, covering 

 the greater part of it, apical angle of last segment shortly and 

 acutely triangularly produced (female) or armed with a strong 

 someAvhat divergent spine passing the middle of the first dorsal 

 genital segment (male), last ventral segment at apex deeply arcu- 

 ately sinuate (male) or much less deeply bisinuate (female) ; genital 

 segments in both sexes, particularly in the female, slightly irregular, 

 turned a little to the right. Fore femora straight, incrassated, sub- 



