KHICNODEEMA. 249 



emarginate. The abdominal segments are less closely and profoundly punctate. Valves of the ovipositor 

 short, bhint, and obtected by the prominent supra-anal plate, which in this species is gently depressed 

 and broadly rounded at the tip. Prosternal spine rather smaller, the apex a little arcuate and gently 

 hollowed in the centre. Hind femora fusiform, the paginae prominent ; tibiae bowed, provided internally 

 with ten, and externally with eight spines. 

 General colour dark brownish-olive, the basal abdominal segment above pale testaceous ; base of second and 

 sutures of all the abdominal segments, knees of hind femora, and hind tibiae infuscated. Antennae 

 black. 



Length of body, $ , 47 ; of pronotum 6*75, of hind femora 20 millim. 

 Hab. Mexico (coll. S. H. Scudder) . 



The single female specimen, the type, simply bears the label " Palmer's assorting, 

 No. 1155." Other numbers of his assorting, ranging from 1148 to 1166, refer to 

 Yucatan, Isthmus of Tehuantepec, and neighbouring localities. It is probable, there- 

 fore, that this insect comes from the vicinity of the boundary of Mexico and Central 

 America. 



3. Ehicnoderma glabra, sp. n. 



About the size of the preceding species or a trifle larger, but differing from it in the less strongly punctured 

 surface of the head and thorax, and in having the entire body decidedly glabrous, while the colour of 

 the head, body, and two anterior pairs of legs is almost uniformly brownish-olive. 



Vertex about one-half broader than the longest diameter of one of the eyes, the fastigium flattened and 

 strongly punctate, not at all sulcate, not separated from the frontal costa by a pair of oblique carinae as 

 illustrated for Hehn's B. humilis (see Proc. Acad. Nat. Sci. Philad. 1905, p. 415, fig. 16) ; the frontal 

 costa sulcate only below the transverse ridge immediately above the ocellus, and then only gently. 

 Pronotum short, nearly twice as broad as long, with scarcely any trace of the median carina ; the anterior 

 margin gently sinuate, the posterior margin straight, the transverse sulci inconspicuous, two in number 

 above, three at sides. Dorsum of metathorax scarcely emarginate at middle. Abdomen faintly carinated 

 above ; the supra-anal plate with its apex broadly rounded, the portion beyond the transverse sulcus as 

 long as broad at base, not sulcate. Valves of the ovipositor a little longer than in the preceding species, 

 their apices less strongly hooked. Hind femora moderately slender and elongate, their superior carinae 

 strongly serrate ; the tibiae hirsute, heavy, seven-spined externally, ten- or eleven-spined internally, the 

 first and second tarsal joints about equal in length. Prosternal spine conspicuous, transverse, its anterior 

 margin raised and forming a prominent straight ridge. 



Hind femora apple-green, the lunules of the knees ferruginous ; hind tibiae externally testaceous, internally 

 pale orange-yellow. Antennae black. The depression at the junction of first and second abdominal 

 segments dark piceous ; the others brownish. 



Length of body, $ , 50 ; of pronotum 5-85, of hind femora 21 millim. 



Hab. Costa Eica, Pozo Azul (Underwood and Carriker, Jr., in coll. L. Bruner). 



Two females. These specimens are readily separable from B. basalis by their 

 glabrous appearance and uniformly brownish-olive colour, as well as by the character 

 of the transverse sulci of the pronotum. 



4. Ehicnoderma pugnax, sp. n. 



As indicated by the synoptic table, the present species is rather closely related to R. glabra, from which it 

 differs by having three continuous transverse sulci on the pronotum, instead of only two with a slightly 

 interrupted additional one near the front margin. It also differs from that species in having the lower 

 posterior angle of the first abdominal segment, as well as the suture between the first and second 



biol. centr.-amer., Orthopt., Vol. II., February 1908. 2 Kk 



