PROTEINISSUS.—ORNITHISSUS. 121 
PROTEINISSUS, gen. nov. 
Ovalis, capite pronoto multo angustiori, vertice ante oculos longe producto, antice rotundato, lateribus 
elevatis, subparallelis, carina centrali perdistincta; fronte long&, angusta, verticem versus persensim 
angustata, tricarinata; clypeo sat brevi, medio carinato; pronoto sat longo, antice fortiter rotundato- 
producto, basi leviter sinuata; scutello pronoto vix longiori, utrinque carinato ; tegminibus supra visis 
ovalibus, lateribus rotundatis, fortiter et irregulariter venatis, sutura clavi vix distincta, vend radiali 
ad basim, vena exteriore ulnari ante medium, furcaté, vend interiore ulnari simplici cum vend clavali ad 
apicem conjuncté; alis angustis, haud plicatis, apicem abdominis attingentibus; pedibus longis, tibiis 
posticis quadrispinosis. 
Oval, with the head much narrower than the pronotum, the vertex extended beyond the eyes, rounded in 
front, with the sides raised, subparallel, and with a strong central furrow continued from front to 
base; forehead long, narrow, very gradually and slightly narrowed towards the apex, tricarinate ; 
pronotum rather long, triangularly extended in front, with the apex broadly rounded ; scutellum about 
as long as the pronotum, with a carina on each side; tegmina together forming an oval, with the sides 
evenly rounded, strongly and somewhat irregularly veined, with the claval suture very finely marked and 
indistinct; the radial vein forked near the base, the exterior ulnar vein forked just before the middle, 
the interior ulnar vein simple and joining the claval vein at the apex or confused at the apex with the 
general venation; legs long and slender, tibie quadrispinose. 
This genus appears to be very distinct, and it does not seem to be closely related to 
the other Issidz with prolonged vertex, such as Ommatidiotus and Mycterodus. 
1. Proteinissus bilimeki, sp. n. (Tab. XII. figg. 13, 13 a, b.) 
Griseo-testaceus, fere unicolor, punctis quibusdam minutis fuscis indistincte adspersus; pronoto ad medium 
fortiter impresso ; tegminibus subnitidis, subpellucidis, crasse venatis ; pedibus testaceis. 
Femine segmento ultimo ventrali simplici, processu anali brevi, lato, truncato, supra ad apicem fere bifido. 
Of a greyish-testaceous colour, almost unicolorous, with indistinct scattered minute dark spots, which are 
plainer on the frons and sides of the tegmina; pronotum rather strongly margined, with a depression in 
the centre; tegmina somewhat pellucid and slightly shining, with strong, venation ; legs testaceous. 
- Long. cum tegm. 6 millim.; lat. ad hum. 3 millim. 
Hab. Mexico, Guadalajara and Cuernavaca (Bilimek, in Mus. Vind. Ces.). 
Two female specimens. 
ORNITHISSUS, gen. nov. 
Ovalis, capite subglobulari, oculis haud valde prominentibus, vertice convexo, antice in processum preelongum, 
perangustum, supra verticem reflexum, profunde canaliculatum, extensum ; fronte perangusta, apicem versus 
sensim dilatata, tricarinataé; pronoto inter oculos semicirculariter producto; tegulis magnis; scutello 
pronoto ad medium duplo longiori, vix distincte tricarinato ; tegminibus ovalibus, apicem abdominis vix 
superantibus, crasse venatis, ven4 radiali simplici, vena ulnari exteriore pone medium, vena ulnari interiori 
ad medium furcata; alis sat brevibus, apicibus truncatis; tibiis posticis longis, validis, fortiter quadrispinosis. 
Oval, with the head together with the eyes, which are not very strongly prominent, subglobular ; vertex 
convex, produced in front into a very long and narrow process, which is channelled deeply above and is 
strongly deflexed above the vertex, if viewed from the side; forehead very long and narrow, gradually 
widened before the apex, tricarinate; pronotum produced semicircularly between the eyes; tegule 
large ; scutellum twice as long as the pronotum at its widest, indistinctly tricarinate ; tegmina together 
forming an oval, just covering the apex of the abdomen, strongly veined, the radial vein simple, the 
exterior ulnar vein forked behind the middle, and the interior ulnar vein at the middle; wings short, 
truncate at the apex; posterior tibie long and stout, with four strong spines. 
