302 CAPT. G. E. SHELLEY ON BIRDS [Mar. 7, 
s.h, stylo-hyal; e.p, epihyal; c¢.h, cerato-hyal; 4.4, basihyal; ¢h, 
thyro-hyal ; s.4.m’, origin of the stylo-hyoideus ; s.h. m, its insertion ; 
s.h.m.t, its tendinous edge (this, being deep of the muscle and ducts, 
is diagrammatically represented by a dotted line); m.h, m.h', mylo- 
hyoideus, cut and reflected ; s.g, sterno-glossus (cut short) ; g.h', gento- 
hyoideus, at its origin, cut short and reflected; h.g, hyo-glossi; ep, 
epipharyngeus (Owen); hy, hyopharyngeus (Owen); int, inter- 
cornualis; 1, 2, 3, the three ducts of the submaxillary gland, con- 
verging to be surrounded by the stylo-hyoideus. 
2. The same parts in Tamandua tetradactyla, enlarged. The letters as 
before, except s.4.m, stylo-hyoideus muscle, with its anterior ten- 
dinous edge (s.4.m.t), blending here with the mylo- (m.h.) and genio- 
hyoid (g./) muscles, and surrounding the three submaxillary ducts 
(s.m.d), which are cut short and reflected ; m.h’, hyoid origin of the 
mylo-hyoid. 
8. Diagram to show the openings into the mouth of the three ducts of the 
submaxillary gland in Myrmecophaga. a, b, the two ducts from the 
more posterior parts of the gland, opening together ; c¢, the third 
duct, from the cervical part, opening posteriorly to the other twoducts. 
2. List of the Birds sent home by Mr. Joseph Thomson from 
the River Rovuma, Fast Africa. By Captain G. E. 
SHELLEY. 
[Received February 25, 1882.] 
(Plate XVI.) 
. Mr. 'Thomson is well known as one of the most successful East- 
African explorers. On him devolved the task of carrying through 
the expedition in which Mr. Keith Johnston lost his life; and no 
praise can be too strong for the manner in which he fulfilled his mission. 
Like all successful African travellers, he has again returned to the 
Dark country, this time to explore the river Rovuma and to report 
on the value of the coal-fields said to exist in that valley ; and an in- 
teresting account of his journey has been given by himself (Proc. 
R. Geogr. Soc. 1882, p. 65). 
The Rovuma runs from the south-west into the sea at 10°30! S. 
lat.; and Mr. Thomson explored. this valley to nearly 37° E. long. 
During this journey the present collection of birds was made, whereby 
two interesting new species are added to the African Avifauna. 
1. Astur tachiro (Daud.). 16. Cossypha heuglini, Hartt. 
2. Falco minor, Bp. 17. Crateropus plebejus (Aiipp.). 
3. F. dickersoni, Sc/at. 18. Oriolus notatus, Peters. 
4. Coracias caudata, Linn. 19. Pachyprora molitor (Hahn ¢ 
5. Halcyon orientalis, Peters. Kust.). 
6. Merops dresseri, sp. n. 20. Bias musicus ( Viedil.). 
7. Melittophagus builockoides 21. Platystira pellata, Swndev. 
(Smith). 22. Muscicapa cerulescens, Hartl. 
8. M. pusillus (Miill.). 23. Erythrocercus thomsoni, sp. n. 
9. Upupa africana, Bechst. 24. Trochocercus cyanomelas ( Vieill.). 
10. Ivrisor erythrorhynchus (Zath.). | 25. Smithornis capensis, Smith. 
11. Rhinopomastes cyanomelas 26. Parus niger, Viedll. 
( Vieill.). 27. Melanornis ater, Sundev. 
12. Cinnyris microrhynchus, Shelley. | 28. Buchanga assimilis (Bechst.). 
13. C. gutturalis (Linn.). 29. Telephonus erythropterus (Shaw). 
14. Motacilla vidua, Sundev. 30. Laniarius cubla (Shaw). 
15. Turdus libonyanus, Sith, 31. L, boulboul (Shaw). 
