90 • A. N. CAUDELL. 



bers in " cyclone caves," where they eat any insects, inchiding each 

 other, that conies in their way. 



(olj— Udeopsylla grig-antea Brun. 



Daihinia gigantea Brun., Bull. Waslib. Coll., i, 127 (1885). 



One male, Stillwater, Okla, 1895. This insect plainly belongs to 

 the genus Udeopsylla, as all the characters indicate. All the tarsi 

 are four jointed and the subgenital plate of the male is not greatly 

 fissured. Prof. Bruner writes me that the type specimen had the 

 tarsi mutilated. 



(52.) — Gryllotalpa borealis Brum. 



Gryllotalpa borealis Brum., Handb Eut., ii, 740 (1838). 



One female, one nymph ; Stillwater, Okla., 1894. The first stri- 

 dulation of this species was heard at Stillwater that year on the 10th 

 of March. 



(53). — Miog-ryllus oklahomse n. sp. — A moderately stout species, black above, 

 lielow pale testaceous, especially on thorax, scarcely so on abdomen. Head 

 large, broader than the thorax and glistening black, palpi somewhat paler. An- 

 teunary fossae above, ocelli, and a spot on each side of the head l)elow the hinder 

 part of the eye, pale yellow. Antenuge fuscous, basal segment shiny black. Pro- 

 notum dark fuscous above, pale testaceous below; nearly twice as wide as long, 

 regularly and considerably decreasing in width froni in front backwards and 

 with a longitudinal depressed spot on the anterior half of the disk ; posterior 

 margin truncate, interior margin very slightly concave, lateral lobes nearly ver- 

 tical in front, considerably bent inward posteriorly and with the lower margin 

 considerably elevated and ascending from in front backwards. Tegmina as 

 long as the body, well rounded posteriorly. The mediastinal vein is one-bianched 

 and there is a third "oblique" vein present. Wings hidden beneath the elytra, 

 })robably aborted. Legs fuscous, paler below towards the base. Anterior tibiae 

 with the foramen distinct but small on the inner side and large on the outer side, 

 fully a third as long as the tibiae. Posterior tibi* less than two-thirds as long as 

 the hind femora and with five yellow, dusky tipped spines on each side above. 

 Length of pronotum, 2 mm.; elytra, 5 mm. ; posterior femora, 8 mm.; posterior 

 tibite, 5 mm.; width of pronotum in front, 4 mm. ; behind, 3.5 mm. 



Type No. 6120 U. S. Nat. Mus. 



One male ; Perkins, Okla., May 16, 1901, by Mrs. Nellie Caudell. 



The one-branched mediastinal vein, short posterior tibiae bearing 

 but five spines on each side and the small size all go to prove this 

 insect a species of Miogryllus. The presence of a third "oblique" 

 vein is a discordant character, but Prof. Bruner thinks it belongs 

 to that genus without doubt, and so I place it here with but little 

 hesitation. It seems quite distinct from any described species of 

 Miogryllus. 



