168 Mr. West wood's Descriptions 



fere rectis. Prostemum retro porrectum et supra mesos- 



ternum paullo productum, apice rotundatum. Metasternum 



basi tenuissime canaliculatum. Pedes parum elongati, tibiis 



inermibus, tarsis 5-articulatis, subtus setosis, articulis tribus 



basalibus parum cordatis, 4to minuto, unguibus acutis, pul- 



villo parvo bisetoso intermedio instructis. Abdomen 5-arti- 



culatum, articulo basali majori. 



The cbief difference between this genus and Ips, its most decided 



ally, consists in the large size of the type (being nearly three 



quarters of an inch long, whilst the species of Ips rarely exceed 



one-fourth of an inch), the advanced structure of the anterior 



parts of the head, whereby the labrum becomes porrected (thus 



disagreeing with one of Erichson's three characters* of the family 



Ipina) ; the mandibles falcated, and by the canaliculated front of 



the head. The maxillary palpi do not arise from a long basal 



scape as in Ips. The " instrumenta labialia" closely resemble those 



of Ips, but less so those of Pityophagus ferrugineus,^ Shuckard, 



in which last the mentum is much narrowed at the base. 



Sp. unica. Paromia Dorcoides, Westw. (PI. XIII., fig. 1, 



and details.) 

 P. nigra, nitida, elytris castaneis, basi parum luteis, apice nigris, 



maculis duabus subapicalibus fulvis. 

 Long. corp. lin. 8| (cap. cum mand. 2\, prothoracis 2, elytror. 4). 

 Habitat in Columbia. In Mus. D. Reich. Paris. 



Caput antice et versus angulos posticos punctatum, linea media 

 longitudinaliter impressum ultra medium verticis obsoleta, im- 

 pressione altera tenuissima intus oculos et marginem posticum 

 extensa; pronotum tenuissime marginatum. Elytra ad apicem 

 plaga magna nigra antice in medio producta notata, in qud 

 maculae duae transversae subapicales fulvae. 



Cossyphodes, Westw. Gen. Nov. 

 Corpus minutum, latum, subparallelum, antice et postice rotun- 

 datum, valde depressum, marginatum et in medio longitudina- 

 liter elevatum et carinatum. Caput semicirculare, fere planum, 

 margine laterali paullo elevato, utrinque versus angulos pos- 



* " Lahrum occultum." Germar, Zeitsch. iv. 355. 



f Mr. Curtis has unfortunately drawn his generic characters of Ips from this 

 species ; it is, however, certainly, if belonging to the genus Ips at all, a most 

 aberrant species. Mr. Curtis's figure of the " instrumenta labialia" (Brit. Ent. 

 pi. 306, fig. 4) gives no idea of the real structure of this part of the mouth, and 

 omits the paraglossae or laciniBe of the lingua. 



