COLEOPTERA. TROGOSITIDES. 145 



The first subfamily, which I would name Trogositides*, comprises 

 not only the Trogositaria; of Latreillc (which Stephens and Curtis, 

 following Latreille, remove from its legitimate affinities, and place 

 between the Curculionida^ and Cerambycidas), but also many genera 

 placed in the family Engida;, which latter name I have not retained 

 for the subfamily, because, from the structure of the maxillee of Engis 

 (^fig- 11. 8.), it does not appear to be so typical a form as Trogosita 

 (^/7. 11. 17.). These insects have the body more or less oblong, and 

 generally polished (^fig. 11. 6. Engis rufifrons, 11. 14. Trogosita mau- 

 ritanica) ; the antennae short, clavate, and composed of ten or eleven 

 joints i^jig. 11. lo.); the maxillary palpi scarcely longer than the 

 produced lobe or lobes of the maxillee (^fig- 11.8. and 17.) ; the labium 

 is advanced in front of the mentum (^Jig. 11. 9. and 18.) ; the labrum 

 is transverse (^^. 11. 15.), and the mandibles generally bifid at the 

 tips i^Jig. 11. 7. and 1 1. IG.) ; the tarsi are simple, and often 4-jointed; 

 in some, however, there are five joints, in which case one of them is of 

 a minute size (^fig- 11. ii. anterior, 11. 12. posterior tarsi of Engis; 

 11. 19. anterior, 11. 20. posterior tarsi of Trogosita). In addition to 

 the affinities above noticed, the relations of this group with other 

 insects is not less striking. Thus in the subcortical habits and form, as 

 well as in the structure of the larvse of such genera as Cerylon and 

 Rhyzophagus, an approach is made towards the Heteromerous genera 

 Hypophlaeus, &c. ; whilst the grain-feeding habits of Trogosita are 

 very similar to those of Uloma, &c. as well as to some of the smaller 

 Cucujidse.f 



* BiBLioGR. Refer, to the Trogositides. 

 MacLeay. Annulosa Javanica. 

 Gory and Percheron. Genera des Insectes. 

 Westwood, in Zool. Journ. ; and in Trans. Soc. Linn. vol. xvi. 

 Hellwig and Kugellan, in Schneider's Mag. 

 Thunherg, in Act. Upsal. vol. iv. 

 Burrell, in Trans. Ent. Soc. vol. i. 



Aub6, in Ann. Soc. Ent. France, 1837. (Monogr. Monotoma). 

 Fahricius. Detcrminatio Generis Ips affiniumque, in Act. Soc. Hist. Nat. Paris, 



t. i. pt. 1. p. 27. 

 Boerner, Oekon. Nachr. dcr Gcsollsch. in Sclilesien, b. iv. s. 73. 

 Wester hauser., Monogr. on Cryptophagus, in Gistl's Faunus, No. 1. 

 Sturm. Deutchslands Fauna Insccten. 



f Gyllcnlial, MacLeay, and Kirby regard the Trogositidje as connected with tlie 

 Lucanid;e ; whilst Latreille is considered by the last-named author as correct in 

 connecting the Xylopluiga with the Capricornes by means of the Platysoma Latr. 



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