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CACTOPHAGUS.— CACTOPHAGOIDES. 89 



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the scutellum is lame, flat, and triangular ; the ventral excavation is long and broad ; 







and the anterior coxse are separated by about half their own width. The length 

 varies from 10-11 A, and the breadth 4i— 5-£ mm. 



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CACTOPHAGOIDES. gen. nov. 



Rostrum abruptly separated from the head above, very stout, cylindrical, arcuate, the basal portion sinuate at 

 the sides and moderately widened, the peduncle of the submentum sulcate anteriorly, the two vertical 



in both sexes ; club of antenna large, flattened, rounded at the 





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lamellae thus formed rounded at the end i 



fir* • r*rnf.rinr«"v ahrrmf.lir nnrl rlppmW a -vat a 



prothorax abruptly and deeply excised on each side near the apex, strongly bisinuate at the base ; 

 scutellum triangular; elytra verrucose; pygidium large; mesothoracic epimera broad, obtuse above; 

 anterior coxae large and very narrowly, the intermediate coxae more widely, separated ; antero-intercoxal 

 process of the metasternum flattened and subtruncate in front : femora and tibiae feebly ciliate, the femora 

 unarmed, the tibiae rounded at the outer apical angle and with a long apical spur ; third tarsal joint 



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large, spongy-pubescent beneath; body elongate, broad, robust, very rugose above. 



Type, G T . verrucosus. 



two Costa Rican forms referred to this genus superficially resemble Disodon- 

 toqewus wollastoni, Marshall *, from Ruwenzori, E. Africa, differing from it mainly in 

 the non-dentate lateral lobes of the peduncle of the submentum in the female, the 

 broader mesothoracic epimera, and the more strongly sinuate base of the prothorax 



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cixv* v,x, ul .. The very uneven verrucose upper surface is suggestive of that of certain 

 species of the Tenebrionid-genus Nosoderma. The prothorax is abruptly excised at 



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the sides in front, much as in Cossonus spathula. 



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' l. Cactophagoides verrucosus, sp. n. (Tab. IV. figg. 18, 18 a, s .) 



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oumewhat convex, black, opaque, the depressions and punctures of the surface filled with a brown or greyish- 

 brown incrustation, Kostrum about as long as the prothorax, coarsely, rugosely, confluently punctate to 



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about the apical third in the <5 and to near the middle in the $ , the outer portion shining and very much 

 smoother, the broader basal portion sulcate and somewhat tumid on each side above the eyes. Prothorax 



as long as broad, sinuate and somewhat rounded at the sides from the base to the deep subapical 



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excision and with a more or less distinct blunt tooth at about the middle ; the surface impressed with 

 very coarse, irregularly distributed, confluent punctures, the interspaces between which are here and 



there obliquely or sinuously raised, the broad depression on the basal portion of the disc bordered on 

 each side by an oblique ridge, and also with an irregular ridge down the middle. Scutellum hollowed 

 anteriorly, alutaceous. Elytra a little wider than the prothorax, rounded-subtriangular, the rows of 

 punctures interrupted by three irregular series of large, elongate, tuberculiform elevations on the disc and 

 other scattered prominences. Pygidium sparsely punctured, tumid and subcristate down the middle 

 posteriorly. Beneath coarsely punctate, smoother along the centre of the abdomen in the tf, the first 

 ventral segment depressed down the middle and the fifth shallowly foveate at the apex in this sex. 

 Anterior coxae very narrowly, the intermediate pair moderately, separated. Femora and tibiae fringed 



with very short hairs : the anterior and intermediate coxae each with a cluster of erect hairs, the anterior 

 pair also with a small tubercle on their inner face. 



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Length 15-20, breadth 5|-8 millim. ( 8 $ .) 







Hab. Costa Rica, Rio Sucio, Irazu (Rogers), Miravalles (Underwood). 



One male and two females. 



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* Trans. Zool. Soc. Lond. xix. pp. 231, 232, t. 7. fig. 19 (1909). 



NN2 



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