104 Mr. H. W. Bates on the Lonc/icorn Cokoptera 



specks of the elytra being confluent and forming irregular mar- 

 bled lines. C. Osculatii of Guerin (Cat. dcs Ins. Col. recueillis 

 par Gaetano Osculati, no. 261) appears to be another allied form 

 similar in size and colours to C. crassa and C lineatocollis ; but 

 the description given of the thoracic markings (" quatre fines 

 lignes longitudinales blanches'^) leaves us in doubt whether 

 there are not four lines on the upper surface, which would re- 

 move the species from the neighbourhood of the two mentioned; 

 for, if the lateral lines are to be included, the description ought 

 to mention six instead of four. The distinctive character of C. 

 crassa is the minute and equal size, great number, and equidis- 

 tant position of the grey specks of the elytra. 



Common in the neighbourhood of Para. C. Osculatii is pro- 

 bably a native of the banks of the Napo, where M. Osculati 

 formed his collection. 



33. Colohothea ordinata, n. sp. 



C, elongata, postlce attenuata, olivaceo-nigra, vertlce postice bi- 

 lineato ; thorace supra lineis quatuor crassiusculis vittaque lata 

 supracoxali fulvo-cinereis ; elytris maculis numerosis subquadratis 

 fulvo-cinereis iw seriebus subordinatis ; thorace ante basin utrin- 

 que breviter tuberculato. Long. 7| lin. <$ . 



Head black, forehead with three slender lines, vertex with 

 two divergent lines, and cheeks with a broad streak, tawny 

 ashy j there is also a tawny-ashy streak behind each eye. An- 

 tennae stout, black, sixth joint with a narrow white ring, the 

 bases of the fourth, eighth, tenth, and eleventh joints with an ashy 

 streak on one side ( ^ ). Thorax slightly constricted at the base, 

 and with a small tubercle on each side ; surface black, with four 

 rather thick tawny-ashy lines ; there is also a broad tawny-ashy 

 vitta above the coxa on each side. Elytra with prominent and 

 rather acute shoulders, thence gradually attenuated to the apex, 

 which latter is truncated, the external angles produced each into 

 a longish spine ; surface olivaceous black, marked with a large 

 number of well- separated and squarish tawny-ashy spots, mostly 

 arranged in rows, and leaving a distinct belt beyond the middle and 

 another near the apex unspotted ; apex itself edged with whitish. 

 Body beneath ochraceous ashy. Legs greyish, varied with 

 black. 



(J . Terminal ventral segment broadly truncated, angles pro- 

 duced; dorsal segment obtuse, entire. 



Ega; rare. 



33. Colohothea subtessellata, n. sp. 



C. elongata, postice attenuata, olivaceo-nigra, vertice postice bi- 

 lineato, thorace lineis duabus dorsalibus crassiusculis alteraque 

 laterali et vitta supracoxali cinereo-ocbraceis ; elytris maculis nu- 



