. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 94 Mr. W. C. Crawley on new and as long as broad, joints 3-7 broader tlian long, the length ot all about equal, the breadth increasing with each joint, the eighth and ninth barely broader than long, and the terminal joint equalling the four preceding ones. The scapes reach the occipital border. Thorax somewhat similar to the description of goeldii, For., but broadest at pronotum, which is broader than long. Epinotum broader than long, in profile as high as mesonotum, the base
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 94 Mr. W. C. Crawley on new and as long as broad, joints 3-7 broader tlian long, the length ot all about equal, the breadth increasing with each joint, the eighth and ninth barely broader than long, and the terminal joint equalling the four preceding ones. The scapes reach the occipital border. Thorax somewhat similar to the description of goeldii, For., but broadest at pronotum, which is broader than long. Epinotum broader than long, in profile as high as mesonotum, the base rounded, the declivity feebly concave, much longer than base. Scale seen from front, flat, straight along the top, the sides sloping outwards slightly from the superior border, becoming broadest in the middle of the sides, thence narrowing to the base. Legs short and stout, gaster large and oval. Mandibles smooth and shining; head subopaque, finely shpgreened; thorax and gaster similarly shagreened, but Fiar. Fig. 2 a. Fig. 2.—Head of Rhizomyrma marshalli. Fig. 2 a.—Funiculus of antenna of Rhizomyrma marshalli. more shining. Declivity of epinotum very smooth and shining. Barbadoes, ]914 (J. M. Bovell, no. 346). In soil round a sugar-cane root. I have named this species after my friend Dr. Guy Marshall, through whom the ant came into my hands. This genus, originally founded by Forel (Tr. Ent. Soc. Lond. lv. 1893, p. 347) as a subgenus of Acropyga, appears hitherto to have been unrepresented in British collections. Professor Emery, who kindly examined a cotype for me, points out that the head is much shorter in this species than in the other American species of which the £ is known. Several species of this genus have antenna? whose joints vary in number ; but not having had an opportunity of examining many other species, I am unable to say whether the structure oi the second joint of the funiculus is unique in Please note that these images are extracted from
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