624 L. Bruner: 
of one of the prominent eyes as viewed from above. Pronotum truncate in front, embracing the head to 
the eyes; the latter about as wide as high; antennae slender, 13 or 14 jointed, median carina rather 
prominent, gently undulate, lateral or humeral angles fading anteriorly ; lower posterior edges turned outward 
and modified into curved spines or hooks as in Scelimena and Gavalidium. Anterior and middle femora 
moderately robust, their carinae gently undulate; hind femora heavy, a little surpassing the abdomen; hind 
tarsi with the first joint decidedly longer than the third. 
Agkistropleuron simplex n. sp. Fig. 1. 
Brunneo-testaceous mottled and variegated with fuscous.. Anterior and middle tibiae pale testa- 
ceous twice annulated with fuscous, abdomen infuscated above, at sides mottled with testaceous, the tip 
upturned, pointed, pale. 
Length of body, 4, 10,5 mm, of pronotum, 10,5 mm, of hind femora, 7 mm, of entire insect, 11,5 mm. 
Habitat. The single male specimen at hand bears the label Sakana (O. Madagaskar), Urwald, 
September 1904. Voeltzkow. 
Tetticerus bigibbosus Hancock. 
A single d specimen of this interesting locust is at hand. It was taken during October 1904, by 
Dr. Voeltzkow, and bears the label Sakana (O. Madagaskar), Urwald. 
Hybotettix hancocki n. sp. Fig. 2. 
Very similar to H. humeralis Hanc., but differing from that species in its slightly smaller size 
and in having the gibbosities of the pronotum relatively longer, slenderer and more acuminate. 
In color this insect is blackish fuscous on the head, pronotum and sides of the basal half of the 
abdomen and pleura, while the legs, apex and dorsum of the abdomen, together with the pronotal shield 
back of the lateral horns are strongly tinged with ferruginous or tan brown. The antennae are ferruginous, 
infuscated apically, long and slender, fully as long as the hind femora and composed of about 13 joints. 
Length of body, d, 11 mm, of pronotum, 15,25 mm, of posterior femora, 6,5 mm, entire insect, 
16,5 mm. 
This species is represented also by a single male specimen labeled Sakana (O. Madagaskar), 
Urwald, September 1904. Voeltzkow. 
Rhynchotettix hancocki n. sp. Fig. 3. 
Dark fusco-ferruginous except the pleura and lower lateral edges of the pronotum and anterior 
and middle legs which are testaceous. Vertex as wide as the short diameter of one of the eyes. Rostrum 
viewed laterally horizontal, straight, a trifle longer than the greatest diameter of one of the prominent 
eyes; viewed from above gradually narrowing on basal three-fifths then suddenly contracted to one-third 
of its basal width, from this point evenly contracted to the acuminate apex, provided with a strong longi- 
tudinal median carina. Head large, fully as high as the greatest depth of the thorax and as wide as the 
anterior edge of the pronotum, inserted into the latter to the back edge of the eyes. Face strongly oblique, 
nearly straight; frontal costa parallel and deeply sulcate between the lateral ocelli and the median ocellus; 
antennae located midway between the lateral and central ocelli and just within a line drawn across the 
lower edges of the eyes, slender, fourteen-jointed about one-half the length of the hind femora. Pronotum 

