GLYPTOSCELIS —-TYPOPHOKTIS. 177 



2. Glyptoscelis albicans. (Tab. vil. fig. 4.) 



Glyptoscelis albicans, Baly, Trans. Ent. Soc. 1865, p. 334. 



Hab. Mexico (Sturm, coll. Sails). 



The single specimen contained in the collection of M. Salle agrees perfectly with the 

 typical insect in Mr. Baly's collection, except in one point, the claws being simple 

 instead of bifid, a peculiarity of the present genus — a rather important difference, I 

 admit, and one which, if connected with any other, would have induced me to erect 

 another genus; but having only this one specimen before me, which differs in no 

 other way whatever from Baly's species, I look upon the simple claws as an abnormal 

 occurrence, which I believe is not without precedent in other families of Coleoptera, 

 instances being known to occur in the Curculionidse for example. In the present case 

 there is certainly no trace of a bifid or appendiculated claw, even when seen under the 

 microscope ; and this shows us further how careful we ought to be in the erection of 

 genera as well as of species when we take a single structural character as a guide, 

 especially when founding it upon a single specimen. 



The "habitat" of the present species was not known to its author; the insect, 

 formerly in the collection of Sturm, is labelled Mexico. 



3. Glyptoscelis mexicanus. 



Elongate, subcylindrieal, black ; antennae (their apical joints excepted) and legs obscure rufous ; thorax and 

 elytra opaque, alutaceous, very finely punctured, and covered with thin grey pubescence. 



Length 3-3| lines. 



Head convex at the vertex, finely punctured and closely pubescent ; antennae with the last five joints distinctly 

 thickened, black, rest of the joints rufous ; thorax cylindrical, nearly as long as broad, the posterior 

 margin only slightly produced at the middle, anterior margin greatly advanced in front, the sides slightly 

 rounded and widened from the base to the apex, surface extremely finely punctured and granulate, thinly 

 covered with yellowish-grey hairs ; elytra subcylindrieal, very slightly widened towards the apex, the latter 

 rather acute but not produced into a point ; surface punctured and pubescent like the thorax ; legs obscure 

 rufous, closely haired. 



Hob. Mexico, Playa Vicente (Salle). 



Of this species, which may be known by its opaque black colour and the fine 

 granular punctuation of its upper surface, I find two specimens contained in M. Salle's 

 collection. 



TYPOPHOEUS. 



Typophorus, Erichson, Arch. f. Naturg. 1847, i. p. 163. 



Several good characters unite in this genus to distinguish it from the rest of the 



Eumolpidse namely the general shape of the thorax and the elytra (the latter of which 



^arcdislin^tly^wider at the base than the thorax), the groove round the inner orbit oi 

 the eyes, and the emarginate tibiae, dentate femora, and bifid claws. The head is 



biol. cente.-amer., Coleopt., Vol. VI. Pt. 1, June 1882. 2 a 



