1904.] NATURAL SCIENCES OF PHILADELPHIA. 663 



MAZARREDIA Bolivar. 

 1887. Mazarredia Bolivar, Ann. Soc. Ent. Belg., XXXI, pp. 194, 236. 



Included sculpta, remissa, semperi, abbreviata, insularis, atypa, lauta, 

 gemella, celebica and centrosa Bolivar, gallinacea, fuscipes and rufipes 

 Stal. As gemella is the only species figured it can be selected as the 

 type. 

 Mazarredia aptera n. sp. 



Type : c? ; Island of Labuan, British North Borneo. [Hebard 

 Collection.] 



Differing from all the previously known species of the genus, except 

 M. minuta and truncata Bolivar, in the absence of tegmina and wings, 

 and from these two species it can readily be distinguished by the 

 greater size and acute caudal process of the pronotum. 



Size medium; form depressed; surface scabrous. Head with the 

 occiput not elevated above the level of the pronotum; vertex truncate, 

 about equal to one of the eyes in width, median carina projecting con- 

 siderably beyond the cephalic margin, lateral carinse distinct but by 

 no means as apparent as the median, no frontal carina present; frontal 

 costa forked slightly above the ocelli, rami considerably divergent, 

 moderately arcuate when viewed laterad and sinuate dorsad ; antennae 

 inserted on a level wdth the ventral margin of the eyes; median ocellus 

 placed distinctly ventrad of the antennse, paired ocelli placed between 

 the middle of the eyes; eyes subovoid, moderately prominent. Pro- 

 notum depressed above, subconcave; cephalic margin very broadly 

 and obtusely angulate; humeral angle not prominent; caudal process 

 not exceeding the apex of the abdomen and not reaching the tips of 

 the caudal femora, gradually acuminate to a short distance from the 

 apex where it becomes sharply acuminate with the apex hastate and 

 slightly subulate ; posterior angle of the lateral lobes moderately pro- 

 duced and rectangularly extended when viewed dorsad, apically trun- 

 cate, inferior sinus rectangulate, elytral sinus represented by a very 

 slight emargination; median carina slight, cephalad of the humeral 

 angles very slightly arcuate and elevated, undulate caudad; lateral 

 carinae obsolete cephalad, arcuate caudad of the humeral angles. No 

 tegmina or wings present. Cephalic and median femora not appreci- 

 ably undulate. Caudal femora short, strongly inflated, dorsal and 

 ventral margins evenly arcuate, femoral lobe short, blunt, external 

 pagina and dorso-lateral face with distinct but rather low sculpture; 

 tibiae well supplied with low blunt spines, canthi sparsely and weakly 

 serrulate; metatarsi equal to the third tarsal joint in length, pulvilli 

 low. 



