1885. J INSECTS FROM KlUMA-NJARO. 235 



the intervals irregtilar, shining, rugse or granules), moderately nar- 

 rowed at the base and apex ; arcuate at the sides, with no lateral 

 ridge ; the front margin nearly straight, the anterior angles not 

 prominent, the base slightly bowed. Elytra not quite twice as broad 

 as the thorax, oblong- ovate, moderately convex ; each elytron with 

 three zigzag shining costae (two dorsal, one lateral), the interstices 

 plicate and rugulose ; the suture not costiform. The sides of the 

 elytra shining, the surface uneven and sparingly punctured. Pro- 

 sternal process closely and rather strongly punctured ; the meso- 

 and metasterna less so. Abdomen dull, very finely punctured, the 

 punctuation of the apical segment rather stronger. Legs rugose, 

 not clothed with paler tomentum. 



Length 14-15 millim. 



The females are rather broader than the males, especially in the 

 elytra, which are more oblong and somewhat flattened dorsally. 

 The males have two very small shining spots on the disk of the 

 thorax in front of the middle, and there is an indication of a fine 

 median line. 



I have been in doubt whether to place this species in the genus 

 Amiantus or the more recent genus Melanolophus, Fairm. (Faun, 

 et Fl. d. Pays {^omalis, 1882, p. 69). The general form is, how- 

 ever, more that of Melanolophus, but the suture of the elytra is not 

 costiform. The anterior angles of the thorax are not produced for- 

 ward as in Amiantus. The antennae are rather shorter than in 

 either of these genera. 



HYMENOPTERA, ORTHOPTERA, &c. 



The other Insects collected by Mr. Johnston do not present any- 

 thing remarkable. There is, however, a very fine specimen of 

 Mantis (Jdolum diaboUcum, Saussure), of which a male example in 

 the British Museum is from the White Nile. 



EXPLANATION OF PLATE XV. 



Pig. \. Scarahmtii cribricollis, p. 231. 



2. OntJwphagus johnntoni, p. 232. 

 2a. Lateral view of thorax of ditto. 



3. Calometopus planatus, p. 233. 

 3a. Front view of head of ditto. 



4. Amblystcrna johnstoni, p. 233. 

 .5. Psiloptera lata, p. 234. 



6. Melanolophus afcr, $ p. 234. 



