September, 1875.] ~JJ 



DESCEIPTIOXS OF HITHERTO UNCHARACTERIZED SPECIES OF 

 PHYTOPHAGA. 



BY JOSEPH S. BALY, F.L.S. 



Fam. HISPID^. 

 Geuus CRABISPA. 



(Ediopalpa, olirn, Cat. Hispidae, p. IG. 

 Chabispa amicula. 



Elougata, modice convexa, C(S)'uleo-nigra, nitida, tliorace riihro, 

 eJi/h'is fere edquilato, utrinque intra latius longitudinaliter excavato ; 

 elijtris punctato-striatis, metaUicO'Cceruleis. Long. 3 lin. 



Hab. : Para. 



Front concave ; antenna; equal in length, to the licad and thorax, third joint 

 more than twice as long as the second, fourth and fiftli equal, eacli shorter than the 

 third. Thorax nearly twice as broad as long, sides straight and parallel on their 

 basal half, rounded and converging from the middle to the apex, anterior angles not 

 produced, sub-acute, hinder angles slightly produced, acute ; upper surface deflexed 

 on either side in front, remotely punctured, anterior and lateral borders narrowly 

 edged with piceous, basal lobe also piceous ; on eacli side near the lateral margin ia 

 a broad longitudinal depression, the surface of which is coarsely variolose-puuctate. 

 Scutellum not broader than long, pentagonal, its apical angle obtuse. Elytra slightly 

 broader than the thorax, sides parallel, apex regularly rounded, apical border distinctly 

 serrate ; upper surface moderately convex, minutely granulose-reticulate, regularly 

 punctate-striate, humeral callus tliickened. 



The mucli more elongate form will distinguish this insect from 

 C. laticollis, the only species with which it can be confounded. 



CUAEISPA ELOXGATA. 



Elongnta, angustata, nigro-ccBrulca, nitida, thorace rufo, apice plagCi 

 trigonatd nigra, elgtris abdomineque tnetallico-cceruleis. Long. S^ lin. 

 Hab. : Rio Grande ; in my own collection. 



Front concave ; antemiie longer than the head and thorax, third joint equal in 

 length to the first and second, fourth and fiftli, each one-third shorter tlian the third, 

 equal. Thorax broader than long, sides straigiit and nearly parallel, very slightly 

 converging from the base to beyond the middle, thence rounded and converging to the 

 apex, anterior angles obtuse, hinder acute ; disc not excavated on the sides, tlxc latter 

 distinctly margined ; surface remotely punctured, apex with a large triangular black 

 patch which extends entirely across the apical border, and backwards for one-fourth 

 the length of the disc ; basal lobe piceous, separated from the disc by a transverse 

 groove. Scutellum scarcely longer than broad, sub-pentagonal, impressed near the 

 apex by a transverse groove. Elytra broader than the thorax, parallel, narrowly 

 rounded and distinctly serrate at the apex, the extreme apex obtuse ; upper surface 

 minutely granulose, regularly punctate-striate. 



The narrow elongate form will at once separate this species from 

 its congeners. 



