193 
DESCRIPTIONS OF FIGURES. 
The galleries found in the sap-wood and inner bark are as a 
rule of generic significance. 
Fig. 1. ee thujae much enlarged. Natural length, 
Fig. 2. Piet thujae. —Mother gallery long and perpen- 
dicular, running in both directions from the centre; 
larval galleries long inclining from the centre 
towards each end. 
Fig. 3. Hylisinus fraxini.—The mother gallery is horizontal, 
Heats in both directions from the centre with 
long right-angled larval galleries. 
Fig. 4. Scolytus destructor.—Mother gallery long and perpen- 
dicular; larval galleries long, close together, 
inclining from the centre towards each en 
Fig. 5. Scolytus intricatus—Mother gallery short, horizontal ; 
larval galleries at right angles, long. 
Fig. 6. Pityogenes bidentatus——Mother galleries star-shaped 
(beetles polygamous); larval galleries long, slender 
and irregular. 
XXXI.—DIAGNOSES AFRICANAE: LXXVI. 
1671. Xylotheca Kotzei, Phillips Tae eae 
beae]; affinis X. lasiopetalae, Gilg. et X. Kraussianae, Hochst. ; 
ab hac foliis longioribus coriaceis, nervis alias prominentibus, 
ab illa foliis longioribus glabris recedit. 
Frutex ramis glabris in sicco sulcatis. Folka petiolata; 
lamina lanceolata vel lanceolato-elliptica, nonnunquam breviter 
acuminata, obtusa, basi leviter angustata, 4-11-5 cm. longa, 
1-5-3-3 em. lata, integra, glabra, venatione distincta, costa et 
hervis subtus prominentibus ; petioli 0-4-1-5 cm. longi, puberuli. 
Racemi terminales vel axillares, pauciflori mascult : 
pedicelli 2-8 em. longi, breviter hirsuti. Sepala 3, oblonga, apice 
rotundata, 1-5 em. longa, 7 mm. lata, extus sparse glandulosa 
et pubescentia marginum ‘partibus tectis glabris, ciliata. Petala 
circiter 9, apice rotundata, in basin angustata, 2-2 cm. longa, 
Superne 1 cm. lata, extus breviter villosa. Stamina numerosa ; 
filamenta 5 mm. longa; antherae lineares, obtusae, basi sub- 
Sagittatae, 5-5-6 mm. longae. Flores feminei non visi. Fructus 
ellipsoideus, 2-2 em. longus, 1-5 em. diametro, unilocularis 
placentis parietalibus, aliquantum pustulatus, minute pubescens, 
costis 6 longitudinalibus. 
Sourn Arrica. Zululand: Empangeni Forest Plantation, 
P. C. Kotze in National Herbarium, Pretoria, 1478, 1652, and in 
Herb. Forest Dept. 3537, 3747. Port Durnford Plantation, 
Prior in National Herbariwm, Pretoria, 1479 (type), and in Her). 
Forest Dep. 3632. 
= 18193 
B 
