1900.] INSECTS XSD AR.VCHXIDS FROM SOMALILAKD. fi3 



h^. Last abdominal sternite and lower side of lat and 



2nd caudal segments, and usually als^ of 3rd, 



smooth ; caudal segments 1-3 keeled below. 



a'^. Lower surface of 4th caudal segment coarsely but 



sparst^ly granular, tlio median keels obsolete, the 



lateral keels strongly denticulate ; superior and 



superioi'-lateral crests of tail smooth ; protarsal 



segment of Ist and 2ad legs with a single external 



apical spine pwgilator. 



h". Lower surface of 4th caudal segment not uniformly 

 and coarsely granular, furnished with four normal, 

 subequally strong keels ; superior and superior- 

 lateral crests of tail denticulated ; protarsi of 1st 

 and 2nd legs with at least two external spines mUitaris. 



EXPLANATION OF THE PLATES. 



Plate I. 



Lepidoptera, Coleoptera, &c., from Somaliland. 



Fig. 1. Pscudopkia oppia, p. 18. 



2. Chilena sahrina, p. 20. 



3. Cerocala munda, p. 19. 



4. Acrcea. mirahiUs, p. 11. 



5. Beknois peeli, (j", p. 15. 



6. „ „ $,p. 15. 



7. Pseudophia lineata, p. 19. 



8. Pangonia tricolor, p. 7. 



Fig. 9. Genccerus nebidosiis, p. 26. 



10. Psilopf.era somalica, p. 2."). 



11. Agrypnus longicomis, p. 26. 



12. Sepidium magnum, p. 29. 



13. Rhytidonota rnhusta, p. 28. 



14. Sepidium bilohatum, p. 30. 



15. Julodis latioollis, p. 25. 



16. Trox expansus, p. 22. 



Plate II. 

 Orthoptera from Somaliland. 

 "Fig. 1. Bhegmatopoda peeli, -p. ii. Left elytron, r^ . 



2. Odapkysa angusfipcnnis, p. 43. Left elytron. 2 • 



3. Sauracris lacerta, S , p. 41. 



4. Charieis peeli, J , p. 37. (Antennre and apex of abdomen misijing.) 



5. MUitifsa somaliensis, p. 43. Right elytron. J . 



6. Biirria longixipha, j , p- 38- 



7. Milititsa somaliensis, p. 43. Head and pronotum, 



Plate III. 



Ticks from Somaliland. 



Fig. 1. Rhipicephcdus marmoreus, p.bO. cj'. Dorsal view. X 11 times linear. 



1 a. „ „ Ventral view. 



1 b. „ „ Capitulura and mouth-parts from below. 



1 c. „ ,, Coxffl of 1st and 2nd legs. 



Id. ,, „ Stigma, adanal plate, and anus of left side. 



2. Bhipicephaltis armatiis, p. no. J'- Dorsal view, x 11 times linear. 



2 a. „ „ Ventral view. 



2/). „ ,, Capitulum and mouth-parts from below. 



2 c. „ „ Coxa and trochanter of 1st leg. 

 2d. ,, „ Adanal plate of right side. 



2e. „ „ Lateral view oi' posterior end of abdomen show- 



ing udanal plate, spike above it, and stigma. 

 2/. „ „ $ . Dorsal view. 



Plate IV. 



Scorpions from Somaliland. 

 Fig. 1. Paiidlnus pugilaior, p. .52. Nat. size. 

 1 a. ,, ,, Underside of tail. 



2. Pandimis peeli, p. .53. Underside of tail. 



3. Buthus calviceps, p. 54. Carapace. 



3 a. „ „ Underside of 3rd, 4th, and 5th caudal segments. 

 3 6. „ „ Chela. 



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